CN1138708C - Waste water treating device - Google Patents
Waste water treating device Download PDFInfo
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- CN1138708C CN1138708C CNB981057594A CN98105759A CN1138708C CN 1138708 C CN1138708 C CN 1138708C CN B981057594 A CNB981057594 A CN B981057594A CN 98105759 A CN98105759 A CN 98105759A CN 1138708 C CN1138708 C CN 1138708C
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- dissolving tank
- sewage
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- air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
A device for removing phosphorous from the sewage comprises a treatment tank 1, a dissolving tank 8 and a setting device. The treatment tank 1 is consisted of an anaerobic tank 5, an aerobic tank 22 and a deposition tank 28. The dissolving tank 8 is used for removing phosphorous. The setting device detects the total current value applying to the electrode 12 of the dissolving tank 8 while sets the supply amount of the air supply device, used for supplying air into the sewage inside the dissolving tank 8, based on the detected current value. To prevent an explosion at the time of maintenance, etc., and to increase reliability by detecting a total current value impressed to an electrode in a elution tank and controlling an evacuating quantity of an evacuating means in accordance with the detected total current value. An inside of a treating tank 1 is divided into the first anaerobic part 5, the second anaerobic part 18, an aerobic part 22, a settling part 28 and a sterilizing part 30. An elution tank 8 is provided at an upper part of a sewage and has a rectangular box shape and has the electrode 14 consisting of an iron material at its inside. A constant direct current is impressed to between the electrodes 14 from a power source device 15, and an eluted iron ion is supplied to the inside of the elution tank 8. Then an irreducibly minimum evacuating quantity which makes hydrogen gas concn. in the elution tank 8 to less than about 4% being an explosion concn. is calculated by using a generated hydrogen gas amount decided by a current value impressed to the electrode 14. Therefore, an air much than the calculated evacuating quantity is discharged to outside and the gaseous hydrogen in the elution tank 8 is reduced to a lower concn. than the explosion concn. and the explosion is prevented by controlling the evacuating quantity of an evacuating fan.
Description
The present invention relates to a kind of waste disposal plant, particularly a kind of waste disposal plant of from sewage, removing phosphorus with sewage purification.
Via dissolved iron ionic dissolving mechanism, with the sewage backflow in the aerobic groove to the anaerobism groove, making the ortho-phosphoric acid reaction in iron ion and the sewage then and produce water-insoluble phosphorus compound aggegation, precipitation and remove the waste disposal plant of the phosphorus in the sewage, is well-known.
Yet, follow the electrolysis of electrode, the hydrogen that produces from electrode can store in dissolving tank, because of the needs of maintenance, during because of carelessness near flare, has the danger that sets off an explosion.
The present invention proposes for solving above-mentioned problem, and its purpose is to provide a kind of waste disposal plant, and the blast in the time of can preventing to keep in repair improves reliability.
First kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Diffuser, it is disposed in this dissolving tank, in the sewage of air supply in dissolving tank; Feed mechanism, in order to institute's dissolved iron ion or aluminum ion in the described dissolving tank are supplied in the sewage in the treatment trough, in addition, also comprise: set mechanism, be supplied in the total current value of described electrode in order to basis, and set the air feed rate in the sewage in the dissolving tank according to the rule that the density of hydrogen in the dissolving tank can be reduced in the safety range.
Second kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Diffuser, it is disposed in this dissolving tank, in the sewage of air supply in dissolving tank; Feed mechanism, in order to institute's dissolved iron ion or aluminum ion in the described dissolving tank are supplied in the sewage in the treatment trough, in addition, also comprise: controlling organization, be supplied in the total current value of described electrode in order to detection, according to detected total current value, and control the air feed rate in the sewage in the dissolving tank according to the rule that the density of hydrogen in the dissolving tank can be reduced in the safety range.
The third structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Diffuser, it is disposed in this dissolving tank; Wind pushing mechanism, it is connected in this diffuser, and via in the sewage of diffuser air supply in dissolving tank; Feed mechanism, in order to be supplied in the sewage in the treatment trough with dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprise: controlling organization, be supplied in the total current value of described electrode in order to detection, according to detected total current value, and in the sewage of air in dissolving tank shown in the A of supply following formula.
[formula 4]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode
The 4th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: air-releasing mechanism, in order to the air of the top of the sewage in the described dissolving tank is discharged; Set mechanism is supplied in the total current value of described electrode in order to detection, according to detected total current value, sets the free air delivery of described air-releasing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
The 5th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: air-releasing mechanism, in order to the air of the top of the sewage in the described dissolving tank is discharged; Controlling organization is supplied in the total current value of described electrode in order to detection, according to detected total current value, controls the free air delivery of described air-releasing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
The 6th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: air-releasing mechanism, in order to the air of the top of the sewage in the described dissolving tank is discharged; Controlling organization is supplied in the total current value of described electrode in order to detection, according to detected total current value, and the air shown in the A of following formula is discharged in dissolving tank.
[formula 5]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode
The 7th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: wind pushing mechanism, in order to the space of the sewage top of air supply in described dissolving tank; Set mechanism is supplied in the total current value of described electrode in order to detection, according to detected total current value, sets the air output of described wind pushing mechanism according to the rule that the density of hydrogen in the dissolving tank can be reduced to safety range.
The 8th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: wind pushing mechanism, in order to the space of the sewage top of air supply in described dissolving tank; Controlling organization is supplied in the total current value of described electrode in order to detection, according to detected total current value, controls the air output of described wind pushing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
The 9th kind of structure as addressing the above problem comprises: treatment trough, and it has anaerobism portion, aerobic and precipitation portion; Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion; Feed mechanism in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank, in addition, also comprises: wind pushing mechanism, in order to the space of the sewage top of air supply in described dissolving tank; Controlling organization is supplied in the total current value of described electrode in order to detection, according to detected total current value, and supplies with the air shown in the A of following formula in dissolving tank.
[formula 6]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode
Being simply described as follows of accompanying drawing:
Fig. 1 is the sectional view of the related waste disposal plant of first embodiment of the invention.
The sectional view that Fig. 2 watches from other directions for the related embodiment of Fig. 1.
Fig. 3 is the amplification view of the dissolving tank of the related embodiment of Fig. 1.
Fig. 4 is the stereographic map of the branch water metering mechanism of the related embodiment of Fig. 1.
Fig. 5 is the sectional view of the related waste disposal plant of second embodiment of the invention.
The sectional view that the embodiment that Fig. 6 relates to for Fig. 5 watches from other directions.
Fig. 7 is the amplification view of the dissolving tank of the related embodiment of Fig. 5.
Below utilize Fig. 1 to waste disposal plant shown in Figure 4, so that the first embodiment of the present invention to be described in detail in detail.
The 1st, be embedded in subterranean treatment trough.First spaced walls 2, second spaced walls 3, the 3rd spaced walls 4 can be passed through in this treatment trough 1 inside, are divided into the first anaerobism portion 5 described later, the second anaerobism portion 18, aerobic 22, precipitation portion 28 and sterilization portion 30.
The 5th, have the first anaerobism portion for the influx 6 of living miscellaneous wastewater inflow, the 7th, be disposed at first anaerobic filter bed in the described first anaerobism portion 5, it can decompose the inclusion precipitate and separate with the difficulty of being sneaked in the living miscellaneous wastewater that flows in the first anaerobism portion 5, and, simultaneously the organonitrogen anaerobic digestion is become ammonia nitrogen by organism being carried out anaerobic digestion attached to the anerobe on first anaerobic filter bed 7.
The 8th, be arranged at the sewage top that is positioned at the described first anaerobism portion 5 and in the face of described later first dissolving tank of inspecting with the rectangular box shape of the position of opening 49.Its side has reflux water-dividing metering mechanism 39 is supplied with via the 3rd return line 45 described later sewage in the vent pipe 9 of the first anaerobism portion 5.10 is the top that is arranged at described dissolving tank 8, and in order to discharge the venting port of the air in the dissolving tank 8.
11 are disposed at electrode 12 that is made of iron material in the described dissolving tank 8 and the electrode cap made from the isolator of closing dissolving tank 8 for having.13 for controlling and supply with the power sector of direct current constant current between electrode 12 by pilot circuit 57 described later.By supplying with the direct current constant currents between described electrode 12, dissolve the iron ion that in dissolving tank 8 and supply with from electrode 12 from power sector 13.
14 are first diffuser between the described electrode 12 that is disposed at described dissolving tank 8 bottoms, and it is formed with a plurality of air blow-off outlets, is connected with first gas blower 15 simultaneously.By the air of supplying with by first gas blower 15 that blows out from the air blow-off outlet, clean electrode 12 and prevent adhering to of mud, simultaneously electrode 12 is dissolved the second valency iron ion that be oxidized to can with the ferric ion of ortho-phosphoric acid reaction.
16 for being disposed at the first advection pipe in the described first anaerobism portion 5, and the sewage that it will be crossed in the described first anaerobism portion 5 anaerobic digestion is supplied in the second anaerobism portion 18 described later via first admission port 17 that runs through first spaced walls, 2 tops.
The 18th, the second anaerobism portion relative be divided into the first anaerobism portion 5 by described first spaced walls 2.19 is second anaerobic filter bed that is disposed in the second anaerobism portion 18, utilizes this second anaerobic filter bed 19, can catch suspended solid, and by anerobe, with the organism anaerobic digestion, simultaneously the organonitrogen anaerobic digestion be become ammonia nitrogen.
20 for being disposed at the second advection pipe in the second anaerobism portion 18, and the sewage that it will anaerobic digestion be crossed in the second anaerobism portion 18 via second admission port 21 that runs through second spaced walls, 3 tops, is supplied in aerobic 22 described later.22 are the aerobic portion relative be divided into the second anaerobism portion 18 by described second spaced walls 3, and the sewage that anaerobic treatment is crossed the second anaerobism portion 18 in via 20 inflows of the second advection pipe wherein.23 for being disposed at the contact material in described aerobic 22, in order to promote the cultivation of aerobism microorganism.
24 for being disposed at second diffuser of described aerobic 22 bottom, and it is formed with a plurality of air blow-off outlets, is connected with second gas blower 25 simultaneously.By blow out the air of supplying with by second gas blower 25 from the air blow-off outlet, with the aerobic conditions in keeping aerobic 22, and utilize the aerobism microorganism that sewage is carried out aerobic decomposition, by the effect of Nitromonas and Nitrosomas, ammonia nitrogen is resolved into nitric acid and nitrite nitrogen simultaneously.
26 is the 3rd diffuser that is disposed at the bottom of described contact material 23 and has a plurality of air blow-off outlets, and it is connected with described second gas blower 25.By by pilot circuit 57 controls first magnetic valve 27, the air of described second gas blower 25 is supplied with, switch to second diffuser 24 or the 3rd diffuser 26.
Usually, when described first magnetic valve 27 switches to second diffuser 24, air that second gas blower 25 supplies with is blown out from the air blow-off outlet of second diffuser 24, and in keeping aerobic 22 in aerobic conditions.When cleaning contact material 23, the air of second gas blower 25 supplied with switch to the 3rd diffuser 26, and, will adhere to and breed the microbial film that thickens gradually in contact material 23 and peel off from the air blow-off outlet blow out air of the 3rd diffuser 26.
The 28th, and be divided into aerobic 22 relative precipitation portion by described the 3rd spaced walls 4, it is arranged at the bottom of the 3rd spaced walls 4, use for sewage, flow into from being communicated with aerobic 22 connected entrance 29, and be separated into throw out and supernatant with precipitation portion 28 aerobic 22 aerobic decomposition.In order to make the throw out that is piled up in precipitation portion 28 bottoms be transmitted back to aerobic 22, so be arranged to skewed by a side of aerobic 22 precipitation portion 28 bottoms from connected entrance 29.
30 for being arranged at the sterilization portion on described precipitation portion 28 tops, with so that precipitation portion 28 isolating supernatants flow into.31 for being arranged at the sterilization mechanism in the described sterilization portion 30, by the medicines such as chlorine class that have in sterilization mechanism 31, will flow into the wastewater disinfection of sterilization portion 30.32 water port for the described sterilization of connection portion 30 are discharged outside the treatment trough 1 in order to the treating water that will disinfect in sterilization portion 30.
33 is first return line that is communicated with the top of described aerobic 22 bottom and the first anaerobism portion 5.34 are the tracheae that scatters of the in first return line 33 that is disposed at described aerobic 22 bottom, it is formed with a plurality of air blow-off outlets, be connected with the 3rd gas blower 35 simultaneously, and the air of the 3rd gas blower 35 being supplied with by the air blow-off outlet blows out, and will be piled up in the mud of described aerobic 22 bottom and be recycled to aerobic 22 throw out from precipitation portion 28, suck in first return line 33 and be back to the first anaerobism portion 5.
36 is second return line that is communicated with the inflow chamber 40 of described precipitation portion 28 tops and described later minute water metering mechanism 39.37 for being disposed at the 5th diffuser in described second return line 36, and it is formed with a plurality of air blow-off outlets, is connected with described the 3rd gas blower 35 simultaneously.By pilot circuit 57 control second magnetic valve 38, the air of described the 3rd gas blower 35 is supplied with, switch to the scatter tracheae 34 or the 5th diffuser 37.
Usually, when second magnetic valve 38 switches to the 5th diffuser 37, the air that the 3rd gas blower 35 is supplied with blows out from the air blow-off outlet of the 5th diffuser 37, makes the supernatant in the precipitation portion 28 suck second return line 36, and is transferred to the inflow chamber 40 of described later minute water metering mechanism 39.
After cleaning described contact material 23, the air of the 3rd gas blower 35 supplied with switch to the tracheae 34 that scatters, and, the sewage in aerobic 22 is flowed into the first anaerobism portion 5 via first return line 33 by from the air blow-off outlet blow out air that scatters tracheae 34.Be accompanied by above-mentioned flow, suck in first return line 33 and be back to the first anaerobism portion 5 being piled up in described aerobic 22 mud and being recycled to aerobic 22 throw out from precipitation portion 28.
39 branch water metering mechanisms for the rectangular box shape that is disposed at described precipitation portion 28 tops, but its predetermined amounts adjustment is transferred to the amount of the supernatant of dissolving tank 8 by second return line 36.Water metering mechanism 39 can be divided into the inflow chamber 40 that is connected with second return line 36 in described minute; The intermediate chamber 42 that separates with this inflow chamber 40 by the partition wall 41 that forms the opening that is communicated with lower side; First water-dividing chamber 43 for the sewage inflow in this intermediate chamber 42; And second water-dividing chamber 44.
Above-mentioned first water-dividing chamber 43 is communicated with dissolving tank 8 via the 3rd return line 45, utilizes the top opening of wall to become the notch part 46 of V word shape simultaneously, is communicated with intermediate chamber 42.Described second water-dividing chamber 44 is communicated with described aerobic 22 top by pipe 47, by being formed at the opening on height adjustable overflow weir 48 tops, is communicated in intermediate chamber 42 simultaneously.
By adjusting the height of described overflow weir 48, change the openings of sizes that is formed at overflow weir 48 tops, set and reflux in aerobic 22 sewage quantity from second water-dividing chamber 44, can regulate the sewage quantity that flows into dissolving tank 8 from first water-dividing chamber 43.
49 use opening for being arranged to inspect with first of the relative position of the first anaerobism portion 5 on first spaced walls, 2 tops, the second anaerobism portion 18 and dissolving tank 8.50 for being arranged at the first guiding switch of inspecting with opening 49, can detect the on off state of first lid 51 described later.But 51 for freely openable ground closing first first lid of inspecting with opening 49, and 52 for being arranged on described first lid 51, will guide the magnetite that switch 50 carries out switching operation.By the locating mechanism that figure does not show, determine the position of first lid 51, make the magnetite 52 that is arranged on first lid 51 with respect to guiding switch 50.
When attract getting rid of the mud that is piled up in the first anaerobism portion 5 and the second anaerobism portion, 18 bottoms and the electrode 12 of maintenance dissolving tank 8 etc., described first lid 51 becomes closing condition.Moreover when first lid 51 was opened, guiding switch 50 cut out (OFF).According to this signal, 57 of pilot circuits stop power sector 13, first lid 51 is installed after, power sector 13 action.
53 for being arranged at relative second the inspecting and use opening in described aerobic 22 position.But 54 for freely openable ground closing described second second lid of inspecting usefulness opening 53.55 for being arranged at relative the 3rd the inspecting and use opening in described sterilization mechanism 31 positions.But 56 for freely openable ground closing the described the 3rd the 3rd lid of inspecting usefulness opening 55, and it becomes closing condition to sterilization mechanism 31 supply chlorine similar drugs etc. the time.
57 is in order to control the pilot circuit of described first gas blower 15, second gas blower 25, the 3rd gas blower 35, power sector 13, first magnetic valve 27 and second magnetic valve 38 etc.
Moreover the living miscellaneous wastewater from family discharges flows into the first anaerobism portion 5 by influx 6.Then, utilization is disposed at first anaerobic filter bed 7 in the first anaerobism portion 5 with thicker solids, inclusion removal such as toilet paper for example in the sewage, and carrying out preparation property handles, so that follow-up inflow the handling procedure of reason portion is more smooth and easy everywhere, effect by anerobe is simultaneously carried out anaerobic digestion with the solid substance removed, inclusion and the sewage by first anaerobic filter bed 7, to reduce BOD, will decompose the bottom that the mud that is produced is piled up in the first anaerobism portion 5 because of sewage simultaneously.And, organic property nitrogen anaerobic digestion is become ammonia nitrogen.
New living miscellaneous wastewater flows into the first anaerobism portion 5, and the sewage of crossing in the first anaerobism portion, 5 anaerobic digestion then flows into the second anaerobism portion 18 from first admission port 17 of the first advection pipe 16.Flow into the sewage of the second anaerobism portion 18,, carry out anaerobic digestion in of the effect of second anaerobic filter bed 19 by anerobe, to reduce BOD, simultaneously will be because of sewage decompose the bottom that the mud that is produced is piled up in the second anaerobism portion 18, and, organic property nitrogen anaerobic digestion is become ammonia nitrogen.
New sewage flows into the second anaerobism portion 18, and the sewage of crossing in second anaerobic filter bed, 19 anaerobic digestion then flows into aerobic 22 from second admission port 21 of the second advection pipe 20.Flow into aerobic 22 sewage, stir by means of the air blow-off outlet from second diffuser 24 blows out the air of second gas blower, 25 supplies.
Then, dissolved oxygen in sewage, and, sewage is carried out aerobic decomposition by numerous aerobism action of microorganisms that are attached to contact material 23 surfaces, simultaneously decomposition such as organophosphate are become ortho-phosphoric acid, and ammonia nitrogen is resolved into nitric acid and nitrite nitrogen.Moreover, will be deposited in aerobic 22 bottom because of sewage decomposes the mud that is produced.
New sewage flows into aerobic 22, then will be by the aerobism action of microorganisms that is attached to contact material 23 sewage of aerobic decomposition, flow into precipitation portion 28 from the connected entrance 29 of aerobic 22 bottom, flow into that the sewage of precipitation portion 28 rises in precipitation portion 28 during, sedimental substance is understood sedimentation and is recycled to aerobic 22 from connected entrance 29, and supernatant then flows into sterilization portion 30.Flow into the supernatant of sterilization portion 30,, and bacteriums such as pathogenic bacteria are killed, discharge outside the treatment trough 1 by relief outlet 32 again by sterilization mechanism 31 sterilizations that have the chlorine similar drug.
Blow out the air of supplying with by the 3rd gas blower 35 by air blow-off outlet from the 5th diffuser 37, supernatant in the precipitation portion 28 flows into the inflow chamber 40 of dividing water metering mechanism 39, and, and flow into first water-dividing chamber 43 and second water-dividing chamber 44 in intermediate chamber 42 rectifications.
Adjust the height of overflow weir 48, and be formed at the openings of sizes on overflow weir 48 tops that are communicated with second water-dividing chamber 44 and intermediate chamber 42 by change, and decision refluxes in aerobic 22 sewage quantity from second water-dividing chamber 44, so but predetermined amounts is regulated the sewage quantity that flows into dissolving tank 8 from first water-dividing chamber 43.
To flowing into via the 3rd return line 45 sewage of dissolving tanks 8, supply with by supplying with the direct current constant current and between the electrode 12 that constitutes by iron material, dissolve the iron ion that from first water-dividing chamber 43.Dissolve iron ion that and the ortho-phosphoric acid reaction that is present in the dissolving tank 8, produce water-insoluble phosphorus compound aggegation, precipitation, be back to the first anaerobism portion 5 by vent pipe 9 simultaneously.Reflux in the sewage of the first anaerobism portion 5 iron ion be present in ortho-phosphoric acid ionic reaction in the first anaerobism portion 5, produce water-insoluble phosphorus compound and aggegation, precipitation.
Moreover, being back to nitric acid contained in the sewage of the first anaerobism portion 5, nitrite nitrogen is by numerous anaerobism denitrifiers reduction that are present in the first anaerobism portion 5, produces the nitrogen loss to air and remove.
Be back to the sewage of the first anaerobism portion 5 from dissolving tank 8, be not from extremely high aerobic 22 of oxyty, but come autoprecipitation portion 28, so even with sewage backflow to the first anaerobism portion 5 in the dissolving tank 8, influence to denitrifier is also little, can carry out anaerobic treatment.
By the formed microbial film of aerobism microorganism that is attached to contact material 23 because of propagation thickening at leisure, so in order to prevent to block, utilize pilot circuit 57 to control first magnetic valve 27 termly, the air supply of second gas blower 25 is switched to the 3rd diffuser 26, make the air blow-off outlet blow out air of the 3rd diffuser 26, and microbial film is peeled off.
Air from the 3rd diffuser 26 is supplied with at the end, the microbial film of being stripped from is piled up in aerobic 22 bottom, pilot circuit 57 control second the magnetic valves 38 and air of the 3rd gas blower 35 supplied with switch to the tracheae 34 that scatters, by from the air blow-off outlet blow out air that scatters tracheae 34, the sewage in making aerobic 22 flows into the first anaerobism portion 5 via first return line 33.Follow this to flow, be piled up in aerobic 22 mud and be recycled to aerobic 22 throw out from precipitation portion 28 and be back to the first anaerobism portion 5 via first return line 33.
Dissolving tank 8 faces first and inspects with opening 49 configuration, opens first lid 51 and the attraction that is piled up in the mud of the first anaerobism portion 5 and the second anaerobism portion 18 when getting rid of, and can inspect dissolving tank 8.Moreover, when opening first lid 51, pilot circuit 57 only makes power sector 13 stop, and makes the mechanism beyond the power sector 13 continue action, so can confirm the action and the sewage disposal situation of waste disposal plant, the electric shock in the time of can preventing to keep in repair dissolving tank 8 simultaneously.
Because of the electrolysis of the electrode 12 in the dissolving tank 8 from the amounts of hydrogen that electrode 12 produces, be by the current value decision that is supplied in electrode 12 according to faraday (Faraday) law.For example, the current value of supplying with electrode 12 is the B ampere, and under standard state (20 degree Celsius, 1 normal atmosphere), the amounts of hydrogen that was produced in 1 minute is A (L), represents with following formula.
[formula 7]
A＝60/96500×B×1/12×22.4
=0.007B (L/ branch)
Hydrogen explosion concentration is 4-75%, so in order to make the air of being supplied with by first gas blower 15 via first diffuser 14, the density of hydrogen in the maintenance dissolving tank 8 is less than 4%, minimum in 1 minute must the air feed rate be V (L), represents with following formula.
[formula 8]
V＝96/4×0.007B
=0.168B (L/ branch)
Therefore, by controlling the air feed rate of first gas blower 15, air more than the air feed rate that will pilot circuit 57 calculates according to above-mentioned relation formula V=0.168B (L/ branch), supply in dissolving tank 8 via first diffuser 14 from first gas blower 15, can make the hydrogen in the dissolving tank 8 drop to the concentration lower, to prevent blast than explosion ratio.
Moreover, can roughly determine to flow into the phosphorus content of waste disposal plant according to the number that stays in family, in order to dissolve the iron ion of the corresponding phosphorus content that flows into, and decision is supplied in the current value of electrode 12, for this reason, the workmen can adopt according to the current value that is supplied in electrode 21, the structure of selecting first gas blower 15 of optimal air feed rate and being provided with, also can adopt correspondence to be supplied in the current value of electrode 12, the air feed rate of regulating first gas blower 15 is to prevent the structure because of the blast of hydrogen generation.
Moreover, the occasion of configuration plural groups electrode in dissolving tank 8, total is supplied in the total current value of the current value of each electrode, calculates hydrogen generating quantity again, carries out the air of necessary amount based on this hydrogen generating quantity and supplies with also passable.
Though lighter-than-air hydrogen stores easily in the top of dissolving tank 8, because the top of dissolving tank 8 is provided with venting port 10, so can expeditiously the hydrogen in the dissolving tank 8 be discharged outside the dissolving tank 8 together with air.
That Fig. 5 to Fig. 7 represents is second embodiment.What adopt in first embodiment is to utilize first diffuser 14 and first gas blower 15 diluted in hydrogen that produces in the dissolving tank 8 to be discharged structure outside the dissolving tank 8.Present embodiment is provided with connecting dissolution groove 8 and atmospheric communicating pipe 58; And via the extraction fan 59 of communicating pipe 58 force air in the dissolving tank 8 being discharged, in order to the hydrogen that produces in the dissolving tank 8 is discharged in atmosphere, to replace first diffuser 14 and first gas blower 15.
Said structure is identical with first embodiment, and the amounts of hydrogen that produces from electrode 12 by the electrolysis of the electrode 12 in the dissolving tank 8 is to follow faraday (Farad) law to be determined by the current value that is supplied in electrode 12.For example, be the B ampere with the current value that is supplied in electrode 12, under standard state (20 degree Celsius, 1 normal atmosphere), the amounts of hydrogen that was produced in 1 minute is A (L), represents with following formula.
[formula 9]
A＝60/96500×B×1/12×22.4
=0.007B (L/ branch)
Hydrogen explosion concentration is 4-75%, thus for being discharged, air in the dissolving tank 8 keep density of hydrogen in the dissolving tank 8 less than 4%, minimum must (L) expression by free air delivery V ' in 1 minute with following formula.
[formula 10]
V′＝96/4×0.007B
=0.168B (L/ branch)
Therefore, free air delivery by control extraction fan 59, air more than the free air delivery that this pilot circuit 57 is calculated according to above-mentioned relation formula V '=0.168B (L/ branch), utilize extraction fan 59 from dissolving tank 8 exhausted airs in atmosphere, it is also lower than explosion ratio that dissolving tank 8 interior density of hydrogen are reduced to, and prevent blast.
Moreover, can roughly determine the phosphorus content that flows into waste disposal plant according to the number that stays in family, in order to dissolve the iron ion of the corresponding phosphorus content that flows into, and decision is supplied in the current value of electrode 12, for this reason, the workmen can adopt correspondence to be supplied in the current value of electrode 12, selects the extraction fan 59 of the most suitable free air delivery and the structure that is provided with, also can adopt correspondence to be supplied in the current value of electrode 12, regulate the free air delivery of extraction fan 59 and prevent to produce the structure of blast because of hydrogen.
Moreover, the occasion of configuration plural groups electrode in dissolving tank 8, total is supplied in the total current value of the current value of each electrode, calculates hydrogen generating quantity again, and the exhaust of carrying out necessary amount based on this hydrogen generating quantity is also passable.
Moreover, be accompanied by the exhaust of extraction fan 59, flow into air in the first anaerobism portion 5 in the dissolving tanks 8 from venting port 10, via being discharged from atmosphere communicating pipe 58, so because of the stench that anaerobic treatment produced in the first anaerobism portion 5, can together be discharged from atmosphere together with the hydrogen in the dissolving tank 8.
Among second embodiment of the invention, though what adopt is to utilize extraction fan 59 that the hydrogen that is produced in the dissolving tank 8 is discharged atmospheric structure, drawing fan is set to replace extraction fan 59 but adopt, it is also passable to attract the air of atmosphere to make density of hydrogen in the dissolving tank 8 be reduced to the structure lower than explosion ratio in dissolving tank 8.
In embodiments of the present invention,, can be produced oxidation at electrode surface and be capped, and become the passive state state through impregnated in for a long time in the treating water in the dissolving tank 8 by electrode 12 that iron material constituted, the dissolving meeting of iron ion slowly reduces, and the dephosphorization function reduces.
Therefore, preferably adopt and supply with the direct current constant current between the pair of electrodes 12 that iron material constituted, the every structure that imposes the polarity conversion through the scheduled time of its electric current.At the iron material surface of anode side process life-time service, can produce oxidation by overlay film, and the iron material surface of cathode side is cleaned by the hydrogen that the cathode side iron material produces then, oxidation is stripped from by overlay film.Therefore, produce oxidation is made the meltage of iron ion tail off by overlay film the timed interval,, can make the stripping quantity of iron ion keep almost fixed, and the dephosphorization function is maintained fixed the polarity conversion according to anode iron material surface.
Moreover according to above-mentioned formation, two electrodes are to constitute with iron material because can be often from constituting the iron material stripping iron ion of anode side electrode, and be supplied in sewage, so can make the dephosphorization function keep relatively-stationary state.
Moreover, also can adopt in the anode side at least of electrode and use iron material, between two electrodes, supply with the direct current constant current, and every process scheduled time makes the structure of supplying with electric current increase becoming pulse type also passable.In said structure, by being increased, the supply electric current is pulse type, the oxidation that is produced on anode side iron material surface is peeled off by overlay film, and remain almost fixed, and the dephosphorization function is maintained fixed by the dissolving that makes iron ion.Follow the increase of supplying with electric current, the generation of hydrogen can increase, yet, follow the increase of supplying with electric current, the air feed rate of first gas blower 15 also increases.
In addition, also can adopt and supply with the direct current constant current between the pair of electrodes that constitutes by iron material, and do the polarity conversion through the scheduled time with its electric current is every, make simultaneously and supply with the structure that electric current increases becomes pulse type.The time of polarity conversion is when longer, the iron material surface of anode side can produce oxidation by overlay film, cleaned by hydrogen by the polarity conversion again, oxidation can be peeled off by overlay film, but, till being stripped from by overlay film to oxidation, need the some time, and the electric impedance during till being peeled off by overlay film to oxidation is very big, and having that the electric power of increasing consumption is may.
Therefore,, supply with electric current and increase and be pulse type, can remove at short notice by anode and convert the oxidation on iron material surface of negative electrode to by overlay film, so can prevent to consume the increase of electric power by making according to said structure.
And, in the embodiments of the invention, dissolve the ionic electrode that taps a blast furnace as supplying with the direct current constant current, all use iron material at the two poles of the earth, but, adopt electrode to use iron material, and the electrode of cathode side uses the structure of insoluble materials such as titanium or platinum also passable in anode side.
Moreover, in an embodiment of the present invention, dissolve the ionic electrode that taps a blast furnace as supplying with the direct current constant current, all use iron material at the two poles of the earth, still, adopt and use the structure of aluminium also can.
The formation of first kind of structure according to the present invention by air supply in the sewage of dissolving tank, is diluted electrolysis because of electrode at the hydrogen that dissolving tank produced, and blasts when preventing to keep in repair and improves effects such as reliability so can reach.
The formation of second kind of structure according to the present invention by air supply in the sewage of dissolving tank, can be diluted electrolysis because of electrode at the hydrogen that dissolving tank produced, so can reach the generation of blast when preventing to keep in repair and improve the effect of reliability.
The formation of the third structure according to the present invention can be diluted electrolysis because of electrode at the hydrogen that dissolving tank produced by wind pushing mechanism, so can reach the generation of blast when preventing to keep in repair and improve the effect of reliability.
The formation of the 4th kind of structure according to the present invention can be discharged electrolysis because of electrode at the hydrogen that dissolving tank produced by air-releasing mechanism, and the hydrogen in the dilution dissolving tank is so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
The formation of the 5th kind of structure according to the present invention can be discharged out electrolysis because of electrode at the hydrogen that dissolving tank produced by air-releasing mechanism, and the hydrogen in the dilution dissolving tank is so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
The formation of the 6th kind of structure according to the present invention can be discharged electrolysis because of electrode at the hydrogen that dissolving tank produced by air-releasing mechanism, and the hydrogen in the dilution dissolving tank is so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
The formation of the 7th kind of structure according to the present invention by the blow space of to the dissolving tank sewage top of wind pushing mechanism, can be diluted electrolysis because of electrode at the hydrogen that dissolving tank produced, so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
The formation of the 8th kind of structure according to the present invention by the blow space of to the dissolving tank sewage top of wind pushing mechanism, can be diluted electrolysis because of electrode at the hydrogen that dissolving tank produced, so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
The formation of the 9th kind of structure according to the present invention by the blow space of to the dissolving tank sewage top of wind pushing mechanism, can be diluted electrolysis because of electrode at the hydrogen that dissolving tank produced, so can reach the generation of blast when preventing to keep in repair and the effect of raising reliability.
Claims (10)
1. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Diffuser, it is disposed in this dissolving tank, in the sewage of air supply in dissolving tank;
Feed mechanism is supplied in the sewage in the treatment trough in order to will dissolve the iron ion that or aluminum ion in described dissolving tank;
It is characterized in that:
Set mechanism is set,, sets the air feed rate in the sewage in the dissolving tank according to the rule that the density of hydrogen in the dissolving tank can be reduced in the safety range in order to according to the total current value that is supplied in described electrode.
2. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Diffuser, it is disposed in this dissolving tank, in the sewage of air supply in dissolving tank;
Feed mechanism is supplied in the sewage in the treatment trough in order to will dissolve the iron ion that or aluminum ion in described dissolving tank,
It is characterized in that:
Controlling organization is set, is supplied in the total current value of described electrode, according to detected total current value, according to the density of hydrogen in the dissolving tank being reduced to rule control in the safety range the air feed rate in the sewage in the dissolving tank in order to detection.
3. waste disposal plant according to claim 2 is characterized in that, described device also comprises: be connected in the wind pushing mechanism of diffuser, with via in the sewage in diffuser air supply and the dissolving tank.
4. waste disposal plant according to claim 3 is characterized in that, in the sewage of air in dissolving tank shown in the A that the density of hydrogen in the dissolving tank can be reduced to the rule supply following formula in the safety range,
[formula 1]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode.
5. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Feed mechanism is in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank;
It is characterized in that:
Air-releasing mechanism is set, in order to the air of the top of the sewage in the described dissolving tank is discharged, set mechanism is set simultaneously, be supplied in the total current value of described electrode in order to detection, corresponding detected total current value is set the free air delivery of described air-releasing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
6. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Feed mechanism is supplied in the sewage in the treatment trough in order to will dissolve the iron ion that or aluminum ion in described dissolving tank;
It is characterized in that:
Air-releasing mechanism is set, in order to the air of the top of the sewage in the described dissolving tank is discharged, simultaneously, controlling organization is set, be supplied in the total current value of described electrode in order to detection, according to detected total current value, control the free air delivery of described air-releasing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
7. waste disposal plant according to claim 6 is characterized in that, according to the rule that the density of hydrogen in the dissolving tank can be reduced in the safety range air shown in the A of following formula discharged in dissolving tank,
[formula 2]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode.
8. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Feed mechanism is in order to be supplied in the sewage in the treatment trough dissolving the iron ion that or aluminum ion in the described dissolving tank;
It is characterized in that:
Wind pushing mechanism is set, space in order to the sewage top of air supply in described dissolving tank, simultaneously, set mechanism is set, be supplied in the total current value of described electrode in order to detection, according to detected total current value, set the air output of described wind pushing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
9. waste disposal plant comprises:
Treatment trough, it has anaerobism portion, aerobic portion and precipitation portion;
Dissolving tank, it supplies with electric current in the electrode that iron material or aluminium constituted, and dissolves iron ion or aluminum ion;
Feed mechanism is supplied in the sewage in the treatment trough in order to will dissolve the iron ion that or aluminum ion in described dissolving tank;
It is characterized in that:
Wind pushing mechanism is set, space in order to the sewage top of air supply in described dissolving tank, simultaneously, controlling organization is set, be supplied in the total current value of described electrode in order to detection, according to detected total current value, control the air output of described wind pushing mechanism according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range.
10. waste disposal plant according to claim 9 is characterized in that, supplies with the air shown in the A of following formula in dissolving tank according to the density of hydrogen in the dissolving tank being reduced to rule in the safety range,
[formula 3]
A＞0.168B
The A:L/ branch
B: the total current value (ampere) that is supplied in electrode.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09035397A JP3954688B2 (en) | 1997-03-24 | 1997-03-24 | Sewage treatment equipment |
| JP090353/1997 | 1997-03-24 | ||
| JP090351/97 | 1997-03-24 | ||
| JP090353/97 | 1997-03-24 | ||
| JP090351/1997 | 1997-03-24 | ||
| JP09035197A JP3954687B2 (en) | 1997-03-24 | 1997-03-24 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1194246A CN1194246A (en) | 1998-09-30 |
| CN1138708C true CN1138708C (en) | 2004-02-18 |
Family
ID=26431842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981057594A Expired - Fee Related CN1138708C (en) | 1997-03-24 | 1998-03-23 | Waste water treating device |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100256439B1 (en) |
| CN (1) | CN1138708C (en) |
| TW (1) | TW474898B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4428822B2 (en) * | 2000-06-20 | 2010-03-10 | 三洋電機株式会社 | Wastewater treatment equipment |
| KR100425954B1 (en) * | 2001-09-26 | 2004-04-03 | 학교법인조선대학교 | Sewage treatment system amd method |
| CN103175229B (en) * | 2006-05-01 | 2015-11-25 | 欧玛奢龙知识产权公司 | Use the method and apparatus of the fuel gas culinary art of being produced by electrolytic cell |
-
1998
- 1998-02-16 TW TW87102131A patent/TW474898B/en active
- 1998-03-20 KR KR1019980009587A patent/KR100256439B1/en not_active Expired - Fee Related
- 1998-03-23 CN CNB981057594A patent/CN1138708C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| TW474898B (en) | 2002-02-01 |
| KR100256439B1 (en) | 2000-05-15 |
| CN1194246A (en) | 1998-09-30 |
| KR19980080486A (en) | 1998-11-25 |
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