[go: up one dir, main page]

WO2018221970A2 - Système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande - Google Patents

Système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande Download PDF

Info

Publication number
WO2018221970A2
WO2018221970A2 PCT/KR2018/006185 KR2018006185W WO2018221970A2 WO 2018221970 A2 WO2018221970 A2 WO 2018221970A2 KR 2018006185 W KR2018006185 W KR 2018006185W WO 2018221970 A2 WO2018221970 A2 WO 2018221970A2
Authority
WO
WIPO (PCT)
Prior art keywords
water
sedimentation
flotation
flocculant
floc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/006185
Other languages
English (en)
Korean (ko)
Other versions
WO2018221970A3 (fr
Inventor
김원재
임현만
정진홍
안광호
장향연
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Institute of Civil Engineering and Building Technology KICT
Original Assignee
Korea Institute of Civil Engineering and Building Technology KICT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Institute of Civil Engineering and Building Technology KICT filed Critical Korea Institute of Civil Engineering and Building Technology KICT
Priority to CN201880036000.3A priority Critical patent/CN110678244B/zh
Publication of WO2018221970A2 publication Critical patent/WO2018221970A2/fr
Publication of WO2018221970A3 publication Critical patent/WO2018221970A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0084—Enhancing liquid-particle separation using the flotation principle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0006—Settling tanks provided with means for cleaning and maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0048—Plurality of plates inclined in alternating directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2444—Discharge mechanisms for the classified liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
    • B01D21/286—Means for gentle agitation for enhancing flocculation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5227—Processes for facilitating the dissolution of solid flocculants in water

Definitions

  • the present invention relates to a sedimentation and flotation separation integrated high efficiency sedimentation flotation system and its driving method, and more particularly, to the return water (bounce water), sludge concentration equipment symbol water, digester symbol water and effluent water, waste water generated during the water treatment process Integrated high efficiency sedimentation and flotation separation process that simultaneously applies flocculation sedimentation and flotation separation processes to untreated water containing phosphorus or solid substances in various concentration ranges such as river water, lake water and reservoir index contaminated by livestock wastewater and manure treatment A sedimentation flotation system and a driving method thereof.
  • Representative water treatment processes that chemically aggregate contaminants to form floes and then remove them include flocculation sedimentation and flotation.
  • the flocculation sedimentation process is a method of injecting a flocculant to form flocs in order to remove contaminants and suspensions in water and then to precipitate.
  • agitation, flocculation, and precipitation operations are sequentially performed, and it is generally installed as a single device so that this series of operation processes can be performed smoothly.
  • the flocculation sedimentation process is advantageous for removing contaminants and suspensions with high concentration or high specific gravity, but has a disadvantage of high injection concentration of flocculant, high amount of sludge generation, and long residence time.
  • the floating separation process is a method in which air is pressurized at a pressure of 3 to 5 kg / cm 2 to be dissolved in water, and the fine bubbles discharged when returning to normal pressure are attached to fine particles or flocs for floating separation.
  • There is a full press method to pressurize a circulation method to pressurize and circulate 10 to 50% of raw water, and a partial pressurization method to pressurize about 50% of raw water.
  • the flotation speed is 15 ⁇ 20cm / m, which is relatively fast and short in residence time, and is mainly used when the specific gravity of suspensions such as wastewater treatment, pulp recovery in paper waste, and algae removal are small and do not settle easily.
  • the stirring, flocculation, and flotation operations are performed sequentially, and as in the flocculation sedimentation process, it is generally installed as a single device.
  • the flotation separation process is advantageous in removing contaminants and suspensions with low concentration or low specific gravity, low injection concentration of flocculant, low amount of sludge generation, and short residence time.
  • an object of the present invention is to provide a sedimentation and flotation separation integrated high efficiency sedimentation flotation system which can be sequentially applied by fusion and condensation of flocculation sedimentation and flotation separation processes in untreated water.
  • a high speed agglomeration unit for adding flocculant to untreated water and stirring to produce a floe of a predetermined size
  • a high speed needle for settling and removing the first size of the floc in the discharge water by the plurality of inclined plate is formed in the discharge path discharged from the high-speed agglomeration portion to the lower side and the upward movement path of the introduced discharge water all;
  • a floating separator having a horizontal structure with the fast settling portion and injecting bubbles into the discharged water discharged from the fast settling portion to lift and remove flocs of a second size smaller than the first size.
  • a high speed agglomeration unit for adding a flocculant to untreated water and stirring to produce a floe of a predetermined size
  • a high speed needle for settling and removing the first size of the floc in the discharge water by the plurality of inclined plate is formed in the discharge path discharged from the high-speed agglomeration portion to the lower side and the upward movement path of the introduced discharge water all
  • a flotation separator for injecting bubbles into the discharged water discharged from the high velocity settler and vertically supporting flocs of a second size smaller than the first size to remove and remove the flocs.
  • a high speed agglomeration unit for adding a flocculant to untreated water and stirring to produce a floe of a predetermined size; And a high-speed sedimentation for discharging the discharged water discharged from the high-speed agglomeration unit to the lower side and forming a plurality of inclined plates in the upward movement path of the discharged water to settle and remove flocs of the first size in the discharged water by the plurality of inclined plates.
  • a fusion-composite water treatment unit formed on the high-speed sedimentation zone and having a floating separation area for injecting bubbles into the discharged water via the high-speed sedimentation zone to lift and remove flocs of a second size smaller than the first size.
  • An integrated high efficiency sedimentation flotation system with sedimentation and flotation separation processes is provided.
  • the high-speed agglomeration unit a plurality of partitions are formed to form an internal path of the untreated water flowing through the inlet pipe to form or grow the floc to the first size to the second size article; And at least one motor disposed in a space partitioned by the plurality of partition walls to stir the untreated water and the flocculant.
  • the high-speed sedimentation unit, the sedimentation tank receiving the discharge water of the high-speed agglomeration unit to the lower side and the sediment collecting feet are formed on the bottom surface;
  • An inclined plate module including the plurality of inclined plates disposed to be inclined at predetermined intervals in the settling tank; And an outlet for discharging the treated water disposed on the inclined plate module and passing through the inclined plate module to the floating separator.
  • the floating separation unit the floating separation tank receiving the discharge water of the high-speed sedimentation portion is formed floating pit on one side;
  • a bubble feeder disposed at an inlet of the effluent and generating the bubble to support the floc in the effluent;
  • a floc remover arranged at an upper portion of the floating separation tank and configured to collect the float formed by the bubble feeder into the float pit.
  • a floating separator formed on one side of the bubble feeder and having a predetermined slope from top to bottom in the direction in which the bubble feeder is disposed.
  • the present invention further comprises a sedimentation treatment unit for processing the floc is settled further in the flotation separation tank, the sedimentation treatment unit, the additional sediment collection feet formed on the bottom surface of the flotation separation tank; An additional scraper formed at one side of the bottom surface of the floating separation tank and configured to collect the additional precipitate settled to the bottom surface of the floating separation tank as the additional precipitate settling pit; And an additional inclined plate module disposed under the floc remover and including a plurality of additional inclined plates disposed to be inclined at regular intervals in the flotation separator.
  • the fusion water treatment unit the treatment tank receiving the discharge water of the high-speed agglomeration unit to the lower side, the sediment collecting pit is formed on the bottom surface and the floating pit is formed on the upper side;
  • a scraper for collecting the precipitate precipitated on the bottom surface of the sedimentation tank into the precipitate collection pits;
  • An inclined plate module including the plurality of inclined plates disposed to be inclined at predetermined intervals in the treatment tank;
  • a bubble feeder disposed at one side of the inclined plate module to generate the bubbles to support the floc in the discharged water;
  • a floc remover disposed above the treatment tank and configured to collect the float formed by the bubble feeder into the float pit;
  • a discharge port disposed between the inclined plate module and the floc remover and for discharging the treated water passing through the inclined plate module and the treated water from which the floc is removed by the floc remover.
  • a floating separator formed on one side of the bubble feeder and having a predetermined slope from top to bottom in the direction in which the bubble feeder is disposed.
  • a reprocessing unit for multi-processing by feeding back the treated water discharged through the discharge port to the treatment tank.
  • the reprocessing unit the pump for receiving the treated water discharged through the discharge port; A compressor for receiving external air; And a pressurizer for pressurizing the treated water and the external air through the pump and the compressor to provide the bubble feeder.
  • the method comprising the steps of: introducing a predetermined amount of flocculant into untreated water; Stirring the raw water such that a floc having a first size or less is formed in the raw water; Flocculating the floc of the first size in the discharged water discharged through the stirring; Pressing flotation of the floc of the second size by injecting bubbles into the floc of a second size smaller than the floc of the first size in the discharged water discharged through the flocculation sedimentation step; And removing the flocs of the first size and the flocks of the second size and discharging the treated water from which the flocs have been removed through the flocculation and the step of flotation.
  • a method of driving a flotation system is provided.
  • the pressure of the bubble to be injected includes a range of 3.5 ⁇ 4.5kg f / cm 2
  • the flow rate is preferably characterized in that it comprises a range of 10 to 20% of the inflow of untreated water.
  • the step of analyzing the water quality of the raw water Inputting a predetermined amount of flocculant to form a floc in the raw water; Detecting a concentration of said flocculable flocculant of said floc; Determining an injection concentration of the flocculant by reflecting a predetermined correction ratio in the concentration of the flocculant; Injecting the flocculant according to the injection concentration of the flocculant; Resetting the correction ratio by analyzing the treatment efficiency of the untreated water; And it provides a method of determining the flocculant concentration of the sedimentation and flotation separation integrated high efficiency sedimentation flotation system comprising the step of continuously operating by inputting the flocculant reflecting the reset correction ratio.
  • the step of analyzing the water quality of the raw water Inputting a predetermined amount of flocculant to form a floc in the raw water; Detecting the number of flocs formed in the raw water; Resetting the input amount of the flocculant by analyzing the treatment efficiency of the untreated water; Introducing a flocculant according to the first reset dose; Resetting the input amount of the flocculant by analyzing the treatment efficiency of the untreated water; And a flocculant concentration determination method of the sedimentation and flotation separation integrated high efficiency sedimentation flotation system including the step of continuously operating the flocculant according to the second reset dose.
  • the setting of the predetermined amount of flocculant may include: diluting the cultured alga corresponding to the untreated water to an experimental concentration; Placing the cultured alga into a test container; Prestirring the test vessel at a first speed; Administering a coagulant of a predetermined test concentration; Rapidly stirring the test vessel at a second speed; Slow stirring the test vessel at a third speed; Observing the cultured algae of the test vessel; And collecting and analyzing the cultured algae.
  • sedimentation and flotation separation integrated high efficiency sedimentation flotation system Including, the first sedimentation and flotation separation process integrated high efficiency sedimentation flotation system for inserting into the sewage treatment process system for the intermediate water treatment of the untreated water through the flocculation sedimentation process and flotation separation process; And a second sedimentation and flotation separation process integrated high efficiency sedimentation flotation for discharging the treated water, which is disposed at the final discharge end of the sewage treatment process system, through the coagulation sedimentation process and the flotation separation process, and discharges the treated water.
  • a sewage treatment system including a system.
  • the flocculant introduced into the high-efficiency sedimentation flotation system integrated with the first and second precipitation and flotation separation processes is determined to have a predetermined dose aimed at forming flocs of different sizes.
  • Sedimentation and flotation separation process integrated high efficiency sedimentation flotation system provides the following effects.
  • the present invention has a high treatment rate for the material to be removed in the untreated water, short water treatment time, reducing the amount of chemicals used, and reducing the sludge treatment cost.
  • the present invention has the effect of increasing the stability of the water quality of the water treatment is completed and the economics of the water treatment process cost.
  • FIG. 1 is a block diagram illustrating a schematic configuration of a sewage treatment process.
  • Figure 2 is a block diagram for explaining the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system according to an embodiment of the present invention.
  • Figure 3 is a block diagram for explaining the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system according to another embodiment of the present invention.
  • Figure 4 is a block diagram for explaining the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system according to another embodiment of the present invention.
  • Figure 5 is a flow chart for explaining an embodiment according to the method of determining the flocculant concentration injected into the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system.
  • Figure 6 is a flow chart for explaining another embodiment of the flocculant concentration determination method introduced into the sedimentation and flotation separation integrated high efficiency sedimentation flotation system.
  • FIG. 7 is a flowchart for explaining a method for setting the amount of flocculant to be added initially.
  • FIG. 12 is a flowchart for explaining an example in which the flocculant concentration determining method of FIG. 5 is applied.
  • FIG. 13 is a flowchart for explaining an example in which the flocculant concentration determining method of FIG. 6 is applied.
  • 14 is a graph for showing the generation characteristics of the microfloc according to the operating conditions.
  • 15 to 20 are graphs for explaining the bubble state and the floc processing efficiency according to the bubble generation environment.
  • first and second are intended to distinguish one component from another component, and the scope of rights should not be limited by these terms.
  • first component may be named a second component, and similarly, the second component may also be named a first component.
  • an identification code (e.g., a, b, c, etc.) is used for convenience of description, and the identification code does not describe the order of the steps, and each step clearly indicates a specific order in context. Unless stated otherwise, they may occur out of the order noted. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.
  • untreated water containing high concentrations of suspended solids (SS) and total phosphorus (T-P) or poor precipitation is representative of sewage treatment plant effluent (return water) or digester effluent or effluent.
  • FIG. 1 is a block diagram illustrating a schematic configuration of a sewage treatment process.
  • untreated water introduced into a sewage treatment facility is finally discharged through a primary sedimentation cell, a bioreactor, a secondary sedimentation cell, and a tertiary sedimentation cell.
  • a primary sedimentation cell a bioreactor
  • a secondary sedimentation cell a secondary sedimentation cell
  • a tertiary sedimentation cell a primary sedimentation cell
  • High concentrations of sludge and return water are generated.
  • High concentrations of sludge are also subjected to various treatment processes, and the return water (bounce water) is fed back to the return water treatment tank (bounce water) treatment tank to continue the water treatment process.
  • the return water (convex water) has a very high concentration of solid matter (SS), total phosphorus (TP), and total nitrogen (TN), and the return water (convex water) is substantially high. Turbidity and poor settling characteristics.
  • the return water (conveyed water) is a factor that lowers the overall water treatment efficiency because the treatment water far exceeds the treatment level compared with the design conditions of the sewage treatment process.
  • a separate treatment process for reducing the load of each pollutant must be introduced for the water treatment process.
  • the present invention provides sedimentation and flotation separation for treating untreated water (return water).
  • the present invention is a solid material, such as effluent water, return water (return water) or digester effluent, high turbidity contaminated water, high concentration algae containing raw water of sewage treatment plant, high concentration of total phosphorus or algae, poor sedimentation of pollutants or load fluctuations It can be effectively applied to the treatment of large untreated water.
  • Figure 2 is a block diagram illustrating a high efficiency sedimentation flotation system integrated sedimentation and flotation separation process according to an embodiment of the present invention.
  • the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system is a high-speed flocculation unit 100 for adding flocculant to untreated water and stirring to produce a floe of a predetermined size;
  • the discharged water discharged from the high-speed agglomerating unit 100 flows downward and a plurality of inclined plates are formed in an upward movement path of the discharged water to settle and remove flocs of the first size in the discharged water by the plurality of inclined plates.
  • Precipitating unit 200 Precipitating unit 200; And a floating separator having a horizontal structure with the high speed settling unit 200 and injecting bubbles into the discharge water discharged from the high speed settling unit 200 to lift and remove flocks of a second size smaller than the first size. 300).
  • the high speed aggregating unit 100 includes an agglomeration tank 101 and a motor 103 in a configuration for stirring the untreated water and the flocculant to form flocs in the untreated water.
  • the size of the floc formed in the flocculation tank 101 through the stirring operation is not constant, and for the sake of convenience of description below, the size of the floc will be described based on the first size and the second size.
  • the floc of the first size larger than the floc of the second size is removed, and the flotation separator 300 of the second size smaller than the floc of the first size is removed. Can be.
  • the flocculation tank 101 of the high-speed agglomeration part 100 forms an internal path of the untreated water flowing through the inflow pipe IN to induce the floc to form or grow in the first to second sizes.
  • the first to third partitions 102_1, 102_2, and 102_3, which are a plurality of partitions, are disposed.
  • one side of the inlet pipe (IN) is for injecting a coagulant (IOI), which is a water treatment chemical such as an alum or an alkali (NaOH), which neutralizes and aggregates the surface charges of the colloid and the solid material contained in the untreated water.
  • a coagulant IOI
  • An injection device can be installed.
  • the shape and shape of the first to third barrier ribs 102_1, 102_2, and 102_3 may be configured in two or three stages according to the design, but the discharged water discharged from the high speed agglomeration unit 100 may be disposed at a later stage. Since the second and third partitions 102_2 and 102_3 should be introduced to the lower side of the high speed settling part 200, the discharge water may be discharged to the lower part of the high speed settling part 200. And, the residence time of untreated water is within 20 minutes, but less than 10 minutes is the most efficient.
  • the second bulkhead 102_2 prevents a short circuit of the discharged water discharged from the high speed agglomeration part 100 to the high speed settling part 200 and coagulates the tank 101 to smooth the stirring operation in the high speed agglomeration part 100. It is preferable to have a structure connected to the bottom and extending upward by a certain height.
  • the motor 103 of the high speed aggregation unit 100 is disposed in a space partitioned by the first to third partition walls 102_1, 102_2, and 102_3, and is configured to stir the untreated water and the flocculant.
  • the number and rotation speed of the motor 103 may vary depending on the design, the stirring time of the space partitioned by the first partition 102_1 by the motor 103 may have a range of 0.2 ⁇ 1sec and 0.2 ⁇ 0.6sec It is preferable to include.
  • the high-speed flocculation unit 100 may generate flocs of the first size to the second size by stirring the untreated water and the flocculant, and the untreated water having the flocs is formed into the high-speed sedimentation unit 200 disposed at the next stage. Is moved.
  • a rectifying wall (not shown) may be formed between the high speed aggregation unit 100 and the high speed settling unit 200, and a description thereof will be made with reference to the following embodiments.
  • the high-speed sedimentation unit 200 is a configuration for sedimentation and removal of flocs of the first size in the discharged water discharged from the high-speed condensing unit 100, the settling tank 201, the scraper (not shown), the inclined plate module 202 ), And an outlet 203.
  • the settling tank 201 of the high speed settling unit 200 receives the discharge water of the high speed agglomerating unit 100 to the lower side, and a precipitate collecting pit DG is formed on the bottom surface.
  • a scraper (not shown) collects the precipitate that precipitates at the bottom of the sedimentation tank 201 into the sediment collection feet DG.
  • flocs having a first size to a second size are formed in the untreated water through the stirring operation of the high-speed aggregation unit 100.
  • the floc of the first size means a size that can be precipitated by the inclined plate module 202 in the high-speed precipitation unit 200, the floc of the first size precipitated on the bottom surface of the settling tank 201 is precipitated by a scraper It is possible to collect into a collection pit (DG) and then remove it.
  • DG collection pit
  • the inclined plate module 202 of the high speed precipitation unit 200 includes a plurality of inclined plates disposed to be inclined at predetermined intervals in the settling tank 201.
  • the inclined plate module 202 is formed in a path through which the discharged water from the high-speed agglomerating unit 100 moves upward, and for example, a horizontal fin fin inclined plate structure may be applied, and the angle of the inclined plate is preferably 60 to 65 °. .
  • each inclined plate may have an interval in the range of 5 ⁇ 20cm.
  • the discharged water of the high-speed agglomerating unit 100 passes through the inclined plate module 202 from the bottom to the upper part, in which the floc of the first size in the discharged water is transferred to the bottom surface of the settling tank 201 by the inclined plate module 202. Precipitates.
  • the second size of the floc smaller than the first size of the floc is moved to the settling tank 201 and discharged through the outlet 203.
  • the residence time of the treated water in the high-speed precipitation unit 200 is preferably within 20 minutes.
  • the outlet 203 of the high-speed precipitation unit 200 is disposed above the inclined plate module 202 and discharges the treated water that has passed through the inclined plate module 202 to the flotation separator 300.
  • the outlet 203 may be disposed in the water below the water surface of the settling tank 201 and may have a tubular shape in which inlets and outlets having a size larger than that of the floc of the second size are formed. Because of this, the treated water including the floc of the second size may be transferred to the flotation separator 300 disposed at a later stage without re-dispersing while the floc is moved through the outlet 203.
  • a cleaner 204 for cleaning the gradient plate module 202 may be further included below the gradient plate module 202.
  • clogging may occur in a plurality of inclined plates as flocs of the first size are settled downwards, and the scrubber 204 discharges air from the lower part to the upper part to deposit the sediment deposited on the inclined plate module 202. It is possible to remove the blockage phenomenon by sliding down and flowing down.
  • washing machines 204 are provided by dividing the inclined plate module 202 in a horizontal direction, and in this case, a selective washing operation for a section in which a clogging phenomenon occurs is possible. That is, if a blockage occurs in the middle section of the inclined plate module 202, it is possible to drive only the cleaner corresponding to the center section to remove the blockage.
  • the scrubber 204 preferably injects air corresponding to a range of 20-50 L / min per unit area of 1 m 2. .
  • the floating separator 300 has a horizontal structure with the high-speed settling portion 200 and injects bubbles into the discharged water discharged from the high-speed settling portion 200 to lift flocs of a second size to filter out the flotation.
  • Separation tank 301, bubble feeder 302, and floc remover 303 The separation tank 301, bubble feeder 302, and floc remover 303.
  • the floating separation tank 301 of the floating separation unit 300 receives the discharged water from the high speed settling unit 200, and a floating pit UG is formed on one side of the floating separation unit 300.
  • a floating pit UG is formed on one side of the floating separation unit 300.
  • the floating separation tank 201 and the settling tank 301 has a horizontal structure.
  • the bubble feeder 302 of the flotation separator 300 is disposed at one side of the inlet through which the discharged water of the high speed settling unit 200 is introduced, and generates bubbles to support flocs of the second size in the discharged water.
  • the bubble supplier 302 is capable of providing a large amount of microbubbles to the discharged water discharged from the high speed precipitation unit 200 by injecting external air and water at a high pressure using a pump and a compressor, and the fine bubbles are high speed precipitation units. Attached to the floc of the second size not precipitated at 200, it is possible to float the floc up to the water surface of the flotation separator 300.
  • the floc remover 303 of the flotation separator 300 is configured to collect a scum-like float formed on the flotation separator 301 and formed by the bubble feeder 302 as a float pit. to be.
  • the floc remover 303 may have a configuration in which a scraper is mounted on the caterpillar so as to pick up the floating float to the water surface of the flotation separator 301.
  • the flotation separator 300 may inject bubbles onto a floc of the second size that has not settled in the high-speed sedimentation part 200, and the floc of the second size may float by the floc remover 303. It is possible to collect (UG) and then remove it.
  • the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system further comprises a precipitation treatment unit 400 for treating the floc precipitated further inside the flotation separation tank 301, sedimentation treatment unit 400 ) Includes additional sediment collection feet (CDG), additional gradient plate modules 401, and additional scrapers (not shown).
  • CDG sediment collection feet
  • additional gradient plate modules 401 additional scrapers (not shown).
  • Additional sediment collection feet (CDG) of the sedimentation treatment unit 400 is formed on the bottom surface of the floating separation unit 300, and is configured to collect the floc that is settled to the bottom surface in the floating separation tank (301).
  • the scraper (not shown) of the sedimentation treatment unit 400 is formed at one side of the bottom surface of the flotation separation tank 301 and collects additional precipitates precipitated to the bottom surface of the flotation separation tank 301 as additional precipitate settling collection feet (CDG). It is a structure for doing so.
  • the additional inclined plate module 401 is disposed below the floc remover 303 and includes a plurality of additional inclined plates that are inclined at a predetermined interval inside the flotation separator 301.
  • the plurality of additional inclined plate may be applied to the downflow inclined plate structure and the angle of the inclined plate is preferably 60 ⁇ 65 °.
  • an additional cleaner 402 for cleaning the additional gradient plate module 401 may be further included below the additional gradient plate module 401.
  • the additional swash plate module 401 may be clogged as the additional floc is settled downward, it is possible for the additional scrubber 402 to discharge the air from the bottom to the top to remove the blockage.
  • Sedimentation and flotation separation integrated high efficiency sedimentation flotation system having the configuration as described above generates a floc of the first size to the second size in the high-speed agglomerating part 100,
  • the floc of the first size may be removed through the precipitation operation, and the floc of the second size may be removed from the flotation separator 300 having a horizontal structure with the high speed settling part 200.
  • the flotation separator 300 removes the floc of the first size having a relatively large size in the untreated water by precipitating operation in the high-speed precipitation section 200 at the previous stage, thereby pretreating the flotation separator 300 in the flotation separator 300. It can reduce the processing load in handling two size flocs. As a result, the flotation separator 300 is injected with bubbles to ensure the optimal environment to float flocs, thereby maximizing the floc treatment operation efficiency of the flotation separator 300.
  • the treated water treated in the flotation separator 300 is discharged to the treatment facility or the outside through the first discharge port OUT1, and the floated material from the flotation separator 300 is discharged through the second discharge port OUT2. do.
  • the sediment in the high-speed sedimentation unit 200 may also be discharged through an outlet connected to the sediment collecting feet DG, although not shown in the drawings.
  • the embodiment of the present invention has a structure in which the untreated water is moved from the high speed agglomeration part 100 to the flotation separation part 300 through the high speed settling part 200, in the case of such a structure, a flocculant ( The input of IOI) requires a relatively small amount such that the floc can be formed up to a first maximum size. That is, the input amount of the flocculant (IOI) added to the embodiment of the present invention requires an amount smaller than that of the flocculant added to the apparatus for performing high-speed flocculation, which means that the chemical cost is reduced and the untreated water This means that less sludge is generated in the process, which reduces the treatment cost.
  • Figure 3 is a block diagram for explaining the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system according to another embodiment of the present invention.
  • the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system is a high-speed flocculation unit 100 for adding flocculant to untreated water and stirring to produce a floe of a predetermined size;
  • the inclined plate module 201 formed of a plurality of inclined plates is formed in the discharge path discharged from the high-speed agglomerates 100 downward and the upward movement path of the discharge water to form a plurality of flocs of the first size in the discharge water.
  • Each of the high speed aggregation unit 100, the high speed settling unit 200, and the floating separation unit 300 corresponds to each configuration of the embodiment of FIG. 2, where the high speed settling unit 200 and the floating separation unit 300 are formed.
  • the key feature is that it has a vertical structure.
  • a rectifying wall JB is formed between the high speed aggregation unit 100 and the high speed settling unit 200.
  • the rectifying wall JB is configured to uniformly rectify the flow of the discharged water discharged from the high speed aggregation unit 100.
  • a plurality of rectifying holes are formed in the rectifying wall JB, and the diameter of the rectifying holes is preferably about 10 cm and the total cross-sectional area of the rectifying holes is about 6% of the total cross-sectional area of the water flow.
  • the bottom surface of the floating separation unit 300 includes the high-speed sedimentation unit 200 and the floating separation unit 300. It can be a compartment that partitions.
  • a discharge port for discharging the treated water from which the floc of the first size is removed through the precipitation operation in the high-speed sedimentation unit 200 may be formed below the partition surface.
  • the floc of the first size may be moved to the floating separation unit 300 from the high-speed settling unit 200 by gravity, so that the floc of the first size is set to the high-speed settling unit ( 200) it is possible to remove more completely.
  • the floc of the first size may move to the flotation separator 300 only when the floc of the first size moves upward in the vertical direction in the high speed settling unit 200, the movement of the floc may be limited compared to the horizontal direction.
  • the limited movement of the floc means that the probability that the floc can settle is increased, which means that the removal efficiency in the high-speed settling portion 200 is increased.
  • the high-speed sedimentation unit 200 and the floating separation unit 300 have a vertical structure, through which it is possible to increase the removal efficiency of the floc of the first size.
  • Figure 4 is a block diagram for explaining the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system according to another embodiment of the present invention.
  • the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system is a high-speed flocculation unit 100 for adding flocculant to the raw water and stirring to produce a floe of a predetermined size; And the discharged water discharged from the high-speed agglomerating unit 100 flows downward and a plurality of inclined plates are formed in an upward movement path of the discharged water to settle and remove flocs of the first size in the discharged water by the plurality of inclined plates. And a floating separation region formed above the high-speed sedimentation region and floating on the flotation of the second size smaller than the first size by injecting bubbles into the discharge water via the high-speed sedimentation region.
  • the composite water treatment unit 500 is included.
  • the configuration of the high speed aggregation unit 100 corresponds to the configuration of the embodiment of FIGS. 2 and 3, and in the embodiment of the present invention, the high speed settling unit 200 of FIG. 2 and FIG. It is a key feature that the separation unit 300 has a single integrated structure.
  • the fusion water treatment unit 500 has a high-speed sedimentation region and a floating separation region, and defines a region in which a configuration corresponding to the high-speed sedimentation portion 200 of FIGS. And an area in which a configuration corresponding to the floating separation unit 300 of FIG. 3 is disposed will be defined as a floating separation region.
  • the fusion water treatment unit 500 receives the discharge water of the high-speed agglomeration unit 100 to the lower side, the sediment collection feet (DG) is formed on the bottom surface and the float pit (UG) is formed on the upper one side ( 501); A scraper (not shown) for collecting the precipitate precipitated to the bottom surface of the treatment tank 501 into the precipitate collection feet (DG); An inclined plate module 502 including the plurality of inclined plates disposed to be inclined at predetermined intervals in the treatment tank 501; A bubble feeder (503) disposed at one side of the inclined plate module (502) to generate the bubble to support the floc in the discharged water; A floc remover (504) disposed above the treatment tank (501) for collecting the float into the float UG; And an outlet for discharging the treated water disposed between the inclined plate module 502 and the floc remover 504 and passing through the inclined plate module 502 and the treated water from which the floc is removed by the floc remover 504 ( 505).
  • a floating separator (GB) is formed at one side of the bubble supplier 503.
  • the floating separator GB is formed to have a predetermined slope from the top to the bottom in the direction in which the bubble feeder 503 is disposed, and through this structure, the flocculation sedimentation process and the flotation separation process can be performed smoothly without dead space of water flow. It can be done.
  • the reason why there is no catchment area in the water flow is because the floating separator (GB) is formed, the forward water flow is formed in the lower portion of the inclined plate module 502, and the upper water flow is formed in the lower portion of the bubble supply (503) formed by the floating separator (GB). Is formed, and because the reverse water flow is formed on the bubble supply (503).
  • a configuration for precipitating and treating flocs in untreated water such as the gradient plate module 502 and the sediment collecting feet (DG) is included in the high speed settling region, and the bubble feeder 503 and the floc remover 504 and the floats.
  • FIG. 4 further includes a reprocessing unit 600 for feeding back the treated water discharged through the discharge port 505 to the treatment tank 501 for multi-processing.
  • the reprocessing unit 600 feeds back the treated water discharged through the first outlet OUT1 connected to the outlet 505 to the treatment tank 501 to process the untreated floc in the treated water, and also supplies the necessary water to generate bubbles.
  • a pump 601, a compressor 602, and a pressurizer 603 are included in the configuration for supplying the pressure.
  • the pump 601 is supplied with the treated water discharged through the first outlet (OUT1), the compressor 602 is supplied with external air.
  • the pressurizer 603 compresses the treated water and the outside air and provides the compressed water to the bubble supply unit 503.
  • the pressure of the bubble supply 503 is preferably 2.5 to 6.0 kg f / cm 2 but preferably in the range of 3.5 to 4.5 kg f / cm 2 .
  • the discharge port 505 may be formed in the form of a tube including an inlet and an outlet, the discharge load is less than 350m3 / (d ⁇ m) but 300m3 / (d ⁇ m) is most effective.
  • the embodiment of FIG. 4 increases the flow rate of the floc in the untreated water because the flow of the fluid in the treatment tank 501 is more smooth, and the inclined plate module 502 and the bubble feeder 503 provided in the treatment tank 501. It is possible to smoothly secure a space required for maintaining, repairing, and managing the floc remover 504, the outlet 505, the sediment pit DG, the floating pit UG, and the like.
  • the embodiment according to the embodiment of the present invention has a fusion structure in which a high-speed sedimentation region and a floating separation region are formed in one treatment tank 501. Through this structure, more efficient water treatment operation for untreated water is possible. Smoother maintenance, repair and management are possible.
  • the sedimentation and flotation process integrated high efficiency sedimentation flotation system is a step of injecting a predetermined amount of flocculant into untreated water; Stirring the raw water such that a floc having a first size or less is formed in the raw water; Flocculating the first size flocs in the discharged water discharged through the stirring; Pressing flotation of the floc of the second size by injecting bubbles into the floc of a second size smaller than the floc of the first size in the discharged water discharged through the flocculation sedimentation step; And removing the floc of the first size and the floc of the second size and discharging the treated water from which the floc is removed through the flocculation and the step of flotation.
  • the floc is first removed through the flocculation sedimentation operation and the floc is secondarily removed through the pressure flotation operation.
  • the high-efficiency sedimentation flotation system integrated with the sedimentation and flotation separation process is a solid material such as effluent water, return water (return water) or digester effluent, high turbidity contaminated water, high concentration algae-containing raw water, etc.
  • a high-aggregation process characterized by a small amount of flocculant (IOI) injection concentration, strong agitation strength, and short residence time in response to untreated water having a high total phosphorus or algae concentration, poor sedimentation of pollutants, or a large load variation;
  • IOI flocculant
  • the present invention is a high-speed agglomeration unit 100, a high-speed flocculation unit 200 and the flotation separation unit 300 is organically fused with each other to form a single device, according to this configuration high-speed aggregation process, high-speed precipitation process
  • the water treatment operation that integrates the flotation separation process is possible.
  • the high speed agglomeration process in the high speed agglomeration part 100 neutralizes the surface charges of the colloid and the solid material with a coagulant, so that the high speed sedimentation process of the high speed sedimentation part 200 disposed at the subsequent stage and the flotation separation of the flotation separation part 300 are performed.
  • the pretreatment process to easily remove high concentrations of solids, total phosphorus and algae in the process.
  • Flocculant (IOI) injection amount that is determined in a high-speed aggregation process may be reduced to a level of less than 50-60% compared to the coagulant dosage of conventional flocculation process, to shorten the residence time less than 10 minutes, 60 ⁇ 100sec the stirring strength - By keeping it high in the range of 1 , it is a structure for suppressing the production of heavy and huge swelling floc (macro-floc) and inducing a large amount of micro-floc.
  • the high-speed sedimentation unit 200 is provided with an inclined plate module 202 and a scraper formed of a rectifying wall and an inclined plate or a slanted plate with a blade or an inclined tube to prevent the formation of short-circuit flow, and the condensation process effluent flows into the high-speed sedimentation unit 200.
  • a scrubber 204 which can intermittently aerator is additionally disposed.
  • the bubble separator 302 and the floc remover 303 are disposed in the flotation separator 300 to inject a part of the treated water and outside air at a high pressure into the pump and the compressor to a large amount of the untreated water via the high speed precipitation process. It is possible to supply a microbubble of the microbubble and to attach to the untreated microfloc remaining without being precipitated in the high-speed sedimentation process to float to the surface of the water separation unit 300 and remove the injured sludge.
  • the flow of water flow in the treatment tank 501 flows in from the high-speed condensing unit 100 After passing through the rectifying wall, and through the lower inclined plate module 502 due to the density flow effect by the structure of the inlet and the micro-flop, the fine supplied from the bubble feeder 503 located at the bottom of the floating separator (GB) By being led upward by the flow of bubble feed water, a forward flow at the front of the lower slant plate module 502 and an upstream flow at the end and a reverse flow at the end of the bubble feeder 503 are formed inside the treatment tank 501. It is possible to perform the high-speed sedimentation process and flotation process sequentially without dead space.
  • Figure 5 is a flow chart for explaining an embodiment according to the method of determining the flocculant concentration introduced into the sedimentation and flotation separation integrated high efficiency sedimentation flotation system.
  • the driving method of the sedimentation and flotation separation integrated high efficiency sedimentation flotation system includes an inflow water quality analysis and treatment target material selection step (S100), a flocculant input step (S110), an efficiency analysis step (S120), Determinable concentration (A) step (S130), correction ratio (k) determination step (S140), injection concentration (A * k) determination step (S150), flocculant input step (S160), treatment efficiency and Sludge generation analysis step (S170), correction ratio (k) resetting step (S180), and a continuous running step (S190).
  • Step S100 is a step of analyzing the water quality of untreated water and analyzing the influent water quality and selecting a material to be treated among contaminants in the influent water quality.
  • step S100 solids (SS), total phosphorus (T-P), and total nitrogen (T-N) included in the untreated water are analyzed and the treatment target material in the untreated water is selected.
  • Step S110 is a step of forming a floc in untreated water by adding a predetermined amount of flocculant and injecting a predetermined amount of flocculant into untreated water based on experimental data to induce floc formation in untreated water.
  • S120 is an efficiency analysis step of analyzing the treatment efficiency for untreated water.
  • the step S130 detects the sedimentable concentration (A) of the flocculable flocculant.
  • the floc is generated when the flocculant is added in the step S120 to detect the sedimentable concentration (A) of the flocculant.
  • Step S140 is a step of determining the correction ratio k.
  • the correction ratio k may be set to 0.3 to 0.7, for example, and may be readjusted in step S180.
  • Step S150 is a step of determining the injection concentration (A * k) of the flocculant reflecting the predetermined correction ratio (k) to the precipitation possible concentration (A).
  • Step S160 is a step of injecting the flocculant according to the injection concentration (A * k) of the flocculant.
  • Step S170 is a step of analyzing the treatment efficiency and sludge generation of untreated water, and if the result does not meet the desired criteria according to the treatment efficiency and sludge generation amount (under) resets the correction ratio k through step S180.
  • the processing efficiency is determined to be less than 90% or more based on satisfaction.
  • the step S180 is a step of resetting the correction ratio k, and it is possible to reset the correction ratio k determined in step S140, which means that the injection concentration A * k of the coagulant is reset.
  • step S190 if the treatment efficiency and sludge generation are satisfactory in step S170, the high efficiency sedimentation flotation system integrated with the sedimentation and flotation separation process is continuously operated.
  • the flocculant corresponding to the injection concentration (A * k) determined in step S150 is applied to the actual system. Input to perform normal operation.
  • the injection concentration (A * k) of the flocculant of the present invention is lower than the injection concentration used in the existing flocculation sedimentation process. It means reduced generation.
  • Figure 6 is a flow chart for explaining another embodiment of the flocculant concentration determination method that is introduced into the sedimentation and flotation separation integrated high efficiency sedimentation flotation system.
  • the method of driving the sedimentation and flotation separation integrated high-efficiency sedimentation flotation system is an inflow water quality analysis and treatment target material selection step (S200), flocculant input step (S210), and microfloc water detection step (S220) And, the input amount resetting step (S230), the flocculant input step (S240), the treatment efficiency and sludge generation analysis step (S250), and a continuous running step (S260).
  • Step S200 is a step of analyzing the water quality of the untreated water and analyzing the influent water quality and selecting a material to be treated among contaminants in the influent.
  • the solid matter (SS), total phosphorus (T-P), and total nitrogen (T-N) included in the untreated water are analyzed and the treatment target material in the untreated water is selected.
  • Step S210 is a step of forming a floc in untreated water by adding a predetermined amount of flocculant.
  • a predetermined amount of flocculant is added to untreated water based on experimental data to induce floc formation in untreated water.
  • the step S220 is a step of detecting the number of microflocs, and detecting a case in which the number of microflocs is greater than or equal to a predetermined number or detecting a case in which the generation rate of the number of microflocs is the highest relative to the total number of generated flocs. It is preferable that the size is 10-100 micrometers, for example.
  • step S220 when the result does not satisfy a desired criterion according to the detection result of the microfloc number (under), the input amount of the flocculant is reset through step S230. For reference, in step S220, it is possible to detect the number of microflocs using a particle counter.
  • the step S230 is a step of resetting the input amount of the coagulant, it is possible to first reset the coagulant input amount determined in step S210.
  • Step S240 is a step of inputting a corresponding amount of flocculant when the number of microflocs in step S220 is satisfied.
  • Step S250 is a step of analyzing the treatment efficiency and sludge generation of untreated water, and if the result does not meet the desired criteria according to the treatment efficiency and sludge generation amount of untreated water (under), the input amount of the flocculant is secondary again through step S230. Reset to.
  • step S260 if the treatment efficiency and sludge generation are satisfactory in step S250, the continuous high-efficiency sedimentation flotation system of precipitation and flotation separation process is continuously operated. Applied to the system, it means the normal operation stage.
  • the sedimentation and flotation separation process integrated high efficiency sedimentation flotation system is applicable to all parts of the process to generate untreated water in the sewage treatment plant. That is, the sedimentation and flotation separation type integrated high efficiency sedimentation flotation system is inserted and disposed in the sewage treatment system including the sewage treatment plant to process the untreated water such as the return water (reflux treatment tank effluent) of FIG. 1, and the sewage treatment system It is possible to dispose of the terminal water treatment to be disposed at the final discharge end. That is, at least two of the sedimentation and flotation separation integrated high efficiency sedimentation flotation system of the first sedimentation and flotation separation process integrated high efficiency sedimentation flotation system and the second sedimentation and flotation separation integrated high efficiency sedimentation flotation system It is possible.
  • each treatment process is very complicated and organically combined. Therefore, when the primary water treatment process in the sewage treatment system and the secondary water treatment process in the sewage treatment system end are combined together. The effect of the treatment is very remarkable, as evidenced by practical experimental results.
  • the sedimentation and flotation separation integrated high efficiency sedimentation flotation system is inserted into the sewage treatment system in the first sedimentation and flotation separation integrated high efficiency sedimentation flotation system. It is possible to maximize the efficiency of water treatment by disposing the high efficiency sedimentation flotation system integrated with the flotation separation process.
  • the first settling and flotation separation integrated high efficiency sedimentation flotation system may be determined to be a flocculant input target to form flocs of different sizes, and may vary depending on the design, but the first settling and flotation separation integrated high efficiency sedimentation flotation It is possible to determine the flocculant input amount by setting the size of the target floc smaller than the target floc size of the system to the size of the flotation system of the second settling and flotation separation process.
  • the embodiment of the present invention has a treatment rate of 90% or more for the material to be removed in the untreated water, and it is possible to reduce water treatment time, chemical usage, and sludge treatment cost within one hour by more than 50%.
  • the amount of flocculant (IOI) initially introduced in the flocculant input step (S110) of the embodiment of Figure 5 and the flocculant input step (S210) of the embodiment of Figure 6 can be set.
  • a method of setting the amount of flocculant (IOI) to be initially introduced will be described.
  • FIG. 7 is an example of a flowchart for explaining a method for setting the amount of flocculant (IOI) first introduced.
  • the setting of the predetermined amount of flocculant may include diluting the cultured alga corresponding to the untreated water to an experimental concentration (S301); Putting the cultured alga into a test container (S302); Pre-stirring the test vessel at a first speed (S303); Administering a predetermined test concentration of flocculant (S304); Rapidly stirring the test vessel at a second speed (S305); Slow stirring the test vessel at a third speed (S306); Observing the cultured algae of the test vessel (S307); And collecting and analyzing the cultured algae (S308).
  • Step S301 is a step of diluting the cultured alga corresponding to the untreated water to the experimental concentration.
  • the experimenter artificially incubates raw water containing a high concentration of algae corresponding to untreated water and dilutes the cultured algae to experimental concentrations.
  • Step S302 is a step of placing the cultured algae in a test container
  • step S303 is a step of prestirring the test container at a first speed of 100 rpm before inputting a flocculant (IOI).
  • IOI flocculant
  • step S304 a coagulant (IOI) of a predetermined test concentration is added.
  • the coagulant (IOI) is added to each of the six test containers at an injection concentration as shown in Table 2 for convenience of description. .
  • the step S305 is a step of rapidly stirring the test vessel into which the flocculant (IOI) is added at 150 rpm for 2 minutes
  • the step S306 is a step of slowly stirring at 30 rpm for 15 minutes after the step of rapid stirring (S305).
  • step S307 is to observe the cultured algae of each test vessel at 10 minute intervals
  • step S308 is to collect and analyze the cultured algae of the test vessel.
  • Table 2 shows the results of experiments in which different injection concentrations of coagulant (IOI) were added to six test containers.
  • FIG. 8 to 11 are graphs corresponding to the experimental results of FIG. 7.
  • Figure 8 is a chlorophyll-a concentration change according to the flocculant injection concentration
  • Figure 9 is a turbidity change according to the flocculant injection concentration
  • Figure 10 is a pH change according to the flocculant injection concentration
  • Figure 11 is an alkalinity according to the flocculant injection concentration
  • the amount of flocculant (IOI) initially introduced may be selectively set and used according to circumstances. It is a flowchart for demonstrating an example applied.
  • step S401 step is an inflow water quality analysis step, solids (SS), total phosphorus (TP), phosphate (PO 4 -P), chlorophyll-a (Chl-a), turbidity (Turbidity), hydrogen ion concentration contained in untreated water (pH), alkalinity (Alkalinity), etc. are analyzed.
  • step S402 the treatment target material is selected through analysis in step S401.
  • step S403 the test of FIG. 7 is performed in step S403, and the efficiency according to the test is analyzed in step S404.
  • step S405 determines the injection concentration (A) according to the analysis results in step S404.
  • the injection concentration A set at this time is an injection concentration A corresponding to the simple flocculation sedimentation process, and according to the present invention, the injection concentration A requires an amount smaller than the injection concentration A required for the simple flocculation sedimentation process.
  • step S406 the correction ratio k is set from 0.3 to 0.7, and in step S407, the flocculant injection concentration (k * A) required in the high efficiency precipitation flotation process of the present invention is determined.
  • step S408 is injected a flocculant (IOI) of the injection concentration (k * A) thus determined and in step S409 analyzes the treatment efficiency of the material to be treated.
  • IOI flocculant
  • step S410 if the treatment efficiency of the target material is determined to be 90% or more, and if the treatment efficiency is 90% or less (No), the correction ratio (k) is increased through step S406, and if the treatment efficiency is 90% or more ( Example) S411.
  • Step S411 is a step of determining that the sludge generation amount is the predetermined minimum amount, and if the sludge generation amount is not the predetermined minimum amount (No), the correction ratio (k) is increased through step S406, and if the sludge generation amount is the predetermined minimum amount (Yes) The high efficiency precipitation flotation process is continuously operated.
  • the correction ratio (k) is determined to be a number less than 1, the injection concentration (A * k) of the flocculant in the high efficiency precipitation flotation process is lower than the injection concentration (A) used in the simple flocculation sedimentation process. It means less usage and less sludge.
  • FIG. 13 is a flowchart illustrating an example in which the flocculant concentration determining method of FIG. 6 is applied.
  • FIG. 13 is a flowchart illustrating an example in which the flocculant concentration determining method of FIG. 6 is applied.
  • S501 stage is an influent water quality analysis stage, solids (SS), total phosphorus (TP), phosphate (PO 4 -P), chlorophyll-a (Chl-a), turbidity (Turbidity), hydrogen ion concentration contained in untreated water (pH), alkalinity (Alkalinity), etc. are analyzed.
  • the treatment target material is selected through analysis of step S501.
  • the test of FIG. 7 is performed in step S503, and test efficiency is analyzed using a particle counter in step S504.
  • the step S505 detects the number of microflocs or the number of microflocs relative to the total number of flocs, and in step S506, a desired flocculant injection concentration is determined according to the number of microflocs relative to the number of microflocs or the total number of flocs.
  • the flocculant injection concentration determined at this time corresponds to an amount suitable for the precipitation flotation process.
  • step S508 analyzes the treatment efficiency of the material to be treated, and in step S509 judges that the treatment efficiency of the material to be treated is more than 90%, if the treatment efficiency is less than 90% (No), the flocculant injection concentration is again determined through step S506. If the processing efficiency is greater than 90% (YES), the step S510 is performed.
  • Step S510 is a step of determining that the sludge generation amount is the predetermined minimum amount, and if the sludge generation amount is not the predetermined minimum amount (No), the flocculant injection concentration is determined again through step S506, and if the sludge generation amount is the predetermined minimum amount (Example) Continuous operation of high efficiency precipitation flotation process.
  • the flocculant injection concentration in the high-speed flocculation process is tested for a predetermined material to be treated, stirred at an appropriate agitation strength, and after 10 to 20 minutes have elapsed.
  • the number of microflocs having the particle size of 10-100 ⁇ m is the highest or that the generation rate of the microflocs having the particle size of 10-100 ⁇ m is the highest with respect to the total number of flocs. desirable.
  • the treatment efficiency of the treatment target material is 90% or more through such repeated experiments, and is set to complement the sludge generation amount generated in the high-speed sedimentation flotation process to a minimum condition.
  • FIG. 14 is a graph illustrating characteristics of generating microflocs according to the operating conditions of FIG. 13.
  • the microfloc is generated by generating microflocs having a particle size of 10 to 100 ⁇ m, the treatment efficiency of the material to be treated is 90% or more, and controlling the operating conditions for minimizing the amount of sludge generated in the high-speed sedimentation flotation process. It is possible to control the generation characteristics of the.
  • embodiments of the present invention are capable of removing flocs using bubbles.
  • 15 to 20 are graphs for explaining a bubble state according to the bubble generation environment and the floc processing efficiency according to the bubble state.
  • FIG. 15 is a graph showing the volume distribution of the bubble size according to the operating pressure
  • FIG. 16 is a graph showing the total volume change of the bubble according to the operating pressure
  • FIG. 17 is a graph showing the total surface area change of the bubble according to the operating pressure.
  • the operating pressure is controllable through the pump 601, the compressor 602, the pressurizer 603, etc. of FIG. 4, and the experimental results indicate that a pressure of 3.5 to 4.5 kg f / cm 2 is appropriate. .
  • FIG. 18 is a graph showing a change in bubble volume with a flow rate
  • FIG. 19 is a graph showing a change in bubble specific surface area with a flow rate.
  • the present invention can be applied to the field of water treatment process because it has the effect of reducing the water treatment time, chemical usage and sludge treatment cost required in the sewage treatment process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Physical Water Treatments (AREA)

Abstract

La présente invention concerne un système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande. La présente invention concerne plus précisément un système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation, ledit système comprenant : une partie de coagulation à haut débit pour introduire un agent de coagulation dans de l'eau non traitée de manière à générer un floc ; une partie de précipitation à haut débit pour précipiter un floc ayant une première taille à l'intérieur de l'eau évacuée et le retirer ; et une partie de flottation/séparation présentant une structure horizontale ou une structure verticale par rapport à la partie de précipitation à haut débit, la partie de flottation/séparation injectant des bulles dans de l'eau évacuée qui est évacuée depuis la partie de précipitation à haut débit de telle sorte qu'un floc ayant une seconde taille est amené à flotter et est retiré. La présente invention est avantageuse en ce qu'elle permet d'améliorer l'efficacité du traitement de l'eau non traitée.
PCT/KR2018/006185 2017-05-31 2018-05-30 Système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande Ceased WO2018221970A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880036000.3A CN110678244B (zh) 2017-05-31 2018-05-30 沉淀和漂浮分离工序一体化高效率沉淀漂浮系统以及其驱动方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2018-0049086 2017-05-31
KR10-2017-0068001 2017-05-31
KR1020170068001 2017-05-31
KR1020180049086A KR101979767B1 (ko) 2017-05-31 2018-04-27 침전과 부상분리공정 일체형 고효율 침전부상 시스템 및 그의 구동 방법

Publications (2)

Publication Number Publication Date
WO2018221970A2 true WO2018221970A2 (fr) 2018-12-06
WO2018221970A3 WO2018221970A3 (fr) 2019-02-21

Family

ID=64454889

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2018/006185 Ceased WO2018221970A2 (fr) 2017-05-31 2018-05-30 Système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande

Country Status (3)

Country Link
KR (1) KR101979767B1 (fr)
CN (1) CN110678244B (fr)
WO (1) WO2018221970A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111013207A (zh) * 2019-11-29 2020-04-17 安徽节源环保科技有限公司 一种反冲洗清淤的斜板平流沉淀池
US12280331B2 (en) 2022-04-29 2025-04-22 Lanzatech, Inc. Low residence time gas separator

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102649658B1 (ko) * 2021-05-03 2024-03-21 한국건설기술연구원 상향류 차단 경사판 모듈이 구비된 침전부상 처리장치 및 이를 이용한 침전부상 처리 방법
KR102720530B1 (ko) * 2021-09-15 2024-10-23 미래환경기술 주식회사 가압공기 부상 시스템
CN115569466B (zh) * 2022-09-15 2025-04-08 淮南市宜青环境检测有限公司 一种环境空气中大径漂浮物收集设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0133191Y1 (ko) * 1996-06-22 1999-02-18 박수환 정수장용 침전장치
JP4301582B2 (ja) * 1996-08-26 2009-07-22 味の素株式会社 凝集沈殿法による排水処理方法
JP4492473B2 (ja) * 2005-07-27 2010-06-30 株式会社日立製作所 凝集剤注入制御装置および方法
KR100848117B1 (ko) * 2007-04-25 2008-07-24 (주)미시간기술 복합 고도정수처리 장치
KR100992430B1 (ko) * 2010-03-12 2010-11-08 코오롱워터텍 주식회사 침전 장치 및 이를 포함하는 하ㆍ폐수 처리 장치
KR101281514B1 (ko) * 2011-02-11 2013-07-03 김양수 마이크로버블 유닛과 경사판 구조를 갖는 가압 부상식 오염수 처리방법
KR101197400B1 (ko) * 2011-10-25 2012-11-05 김규태 유입 원수와 여과수 탁도 측정을 통한 약품 주입량 최적화 시스템
FR2995603B1 (fr) * 2012-09-19 2014-09-26 Veolia Water Solutions & Tech Procede de traitement d’eau comprenant une flottation combinee a une filtration gravitaire et installation correspondante
KR20140115604A (ko) * 2013-03-21 2014-10-01 한국건설기술연구원 입자표면적에 의한 응집제 주입 제어장치 및 응집제 주입 제어방법, 그리고 이를 구비한 수처리 설비와 방법
KR101690510B1 (ko) * 2015-05-04 2016-12-28 두산중공업 주식회사 다중 기포 주입 방식의 용존공기부상 수처리 장치
CN105236675B (zh) * 2015-10-14 2017-11-14 深圳职业技术学院 一种电镀废水处理的方法及电镀废水处理装置
KR20170007721A (ko) 2016-09-29 2017-01-20 김영준 슬러지 블랭킷 공유 방식의 고속 응집 침전 장치 및 슬러지의 고속 응집 침전 방법
KR101722099B1 (ko) * 2016-11-23 2017-03-31 주식회사 월드이노텍 미세기포의 안정적 발생구조를 가진 부상분리식 하수처리장치

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111013207A (zh) * 2019-11-29 2020-04-17 安徽节源环保科技有限公司 一种反冲洗清淤的斜板平流沉淀池
CN111013207B (zh) * 2019-11-29 2021-12-10 安徽节源环保科技有限公司 一种反冲洗清淤的斜板平流沉淀池
US12280331B2 (en) 2022-04-29 2025-04-22 Lanzatech, Inc. Low residence time gas separator

Also Published As

Publication number Publication date
CN110678244B (zh) 2021-11-09
KR101979767B1 (ko) 2019-05-17
CN110678244A (zh) 2020-01-10
WO2018221970A3 (fr) 2019-02-21
KR20180131385A (ko) 2018-12-10

Similar Documents

Publication Publication Date Title
WO2018221970A2 (fr) Système de précipitation/flottation hautement efficace comportant des processus intégrés de précipitation et de flottation/séparation et son procédé de commande
WO2011139089A2 (fr) Dispositif de traitement de l'eau propre et des eaux d'égout/eaux usées de type à courant descendant naturel permettant d'économiser de l'énergie
US4156648A (en) Flotation device with pretreatment
US4579655A (en) Apparatus for treating water by flocculation and/or crystalline precipitation, settling and sludge recycling
CA2172336C (fr) Methode de separation des particules non solubles contenues dans un liquide, et appareil connexe
CN106348528A (zh) 一种磁加载沉淀与曝气生物滤池复合污水处理系统
RU2004130307A (ru) Способ и устройство для осветления жидкостей, в частности воды, насыщенных материалом в виде суспензии
CN1109846A (zh) 水的生物纯化过程及其装置
WO2017209353A1 (fr) Appareil de traitement de l'eau utilisant un bioréacteur à membrane de type à boîtier externe
SE503468C2 (sv) Förfarande för rening av en vätska från fasta och upplösta föroreningar med ett flotationsuppklarnings- flockningsförfarande
WO2013048010A1 (fr) Système évolué de traitement de l'eau pour la séparation par membrane basé sur l'élimination des phosphores et des matériaux obstruant la membrane contenus dans un flux latéral
KR101239249B1 (ko) 에너지 절감형 하폐수 고도처리시스템
EP1097908B1 (fr) Circuit de purification dans l'industrie de fabrication du papier
JPH07507481A (ja) 混合供給物の生産方法および装置
CN206127066U (zh) 一种磁加载沉淀与曝气生物滤池复合污水处理系统
WO2024210300A1 (fr) Appareil de traitement de boues de rinçage de processus de filtration rapide pour récupération de sources de carbone, et procédé de traitement de boues de rinçage de processus de filtration rapide
CN111892269A (zh) 油泥处理系统及方法
WO2018135895A1 (fr) Appareil de traitement d'eau mélangée aux hydrocarbures mettant en œuvre une flottation par gaz induit et procédé associé
FR2707622B1 (fr) Procédé d'épuration d'eaux usées par voie biologique et installations pour sa mise en Óoeuvre.
WO2019117589A1 (fr) Système de récupération de phosphore et d'azote dans lequel une cuve de formation de cristaux de type à flottation à air double et un appareil de récupération de cristal pouvant séparer des tailles de grain sont introduits, et procédé de récupération de phosphore et d'azote l'utilisant
KR0175710B1 (ko) 관로형 플록 강화 기기에 의한 슬러지 가압 부상장치
JPS59186689A (ja) 濁水の凝集除濁法及びその装置
DE59100239D1 (de) Verfahren zum biologischen reinigen von abwasser und anlage zur durchfuehrung des verfahrens.
CN115784521A (zh) 一种中纤板生产废水处理系统及工艺
KR20030048735A (ko) 음식물쓰레기 침출수의 처리방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18809670

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 24.03.2020)

122 Ep: pct application non-entry in european phase

Ref document number: 18809670

Country of ref document: EP

Kind code of ref document: A2