CN102923813A - Method for sewage disposal and devices for sewage disposal - Google Patents
Method for sewage disposal and devices for sewage disposal Download PDFInfo
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- CN102923813A CN102923813A CN2012104291149A CN201210429114A CN102923813A CN 102923813 A CN102923813 A CN 102923813A CN 2012104291149 A CN2012104291149 A CN 2012104291149A CN 201210429114 A CN201210429114 A CN 201210429114A CN 102923813 A CN102923813 A CN 102923813A
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- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a method for sewage disposal. The method comprises that sewage is irradiated through first ultraviolet rays, a first disposal liquid and ozone are obtained, wave lengths of the first ultraviolet rays are in a range from 180nm to 260nm, the obtained first disposal liquid and the obtained ozone are irradiated through second ultraviolet rays, clear water and oxygen are obtained, and wave lengths of the second ultraviolet rays are in a range from 250nm to 260nm. By the aid of the method, the sterilization can be achieved, and harmful chemical matters in water can be removed. The invention also provides two devices for sewage disposal.
Description
Technical field
The present invention relates to water treatment field, relate in particular to a kind of sewage water treatment method and device thereof.
Background technology
Pollutent in the sewage comprises microorganism, heavy metal, chemical substance, silt etc. wherein the chemistry of micro-organisms material concentration is weighed with COD, general COD value just meets drinking water standard below 50. and general sewage water treatment method comprises: biological degradation, physical filtering, chlorine sterilization and ultra-violet sterilization, and the hybrid technology that has concurrently.
Biological process: utilize the organism such as microbiological deterioration blue-green algae.Advantage is that cost is low, and shortcoming is that floor space is large, and processing speed is slow, and microorganism has requirement to water surrounding.Contaminant degradation is the fastest under good oxygen condition in general natural water body, and anoxic is taken second place, and anaerobism is the slowest.Therefore manage to adopt the measures such as diversion and artificial aeration to improve water-soluble oxygen, to the degraded of acceleration pollutent,
Physical filtering: the principle of physical filtering type is that hydraulic drives water passes through the small-bore filtering membrane, and particle is attracted on the filtering membrane.It is high to the cleaning efficiency of the particle more than 0.1 micron to filter mould, does not produce secondary pollution.Add all right deodorization and discoloration of filter membrane of activated carbon, eliminate objectionable impurities, but because of the processing of adsorbing simultaneously before chlorine can not be registered one's residence for tap water.Filtration method is invalid for microorganism and soluble chemical material, needs in addition to regularly replace filtering membrane, has increased cost of use and inconvenience.
Chlorine treatment: chlorine is sterilized chemical oxidizing agent the most frequently used in the tap water, also is widely used in the advanced treatment of industrial sewage waste water.Thereby principle is the Aluminium Hydroxide Powder(to make Alum.Sulfate) of chlorine or the water-soluble rear generation of liquid chlorine or chlorine monoxide can be cemented out the hydrogen atom in the organism and kill organic microbial and decomposing organic is learned material.Its major advantage is kill many kinds of microorganisms to comprise bacterium, virus, and parasite, harmless when concentration is lower than 4～5ppm.But the too high meeting of chlorine concentration of element impairs one's health in the tap water, and high density chlorine is violent in toxicity.A little less than the oxychlorination effect, keeping a public place clean needs concentration simultaneously.
Ultra-violet sterilization is a kind of novel and at the water technology of drink water purifying field develop rapidly, its validity was accepted to admit by EPA official in 1996, in recent years just to set up the apparatus for ultraviolet disinfection of Large Tap Water in several big cities of the U.S., reducing secondary pollution thereby substitute chlorine disinfectant with part. its principle is to utilize the directly sterilization of ultraviolet radiation (1) puncture microorganism; Its (2) specific wavelength can excite oxide compound to make it carry out rapidly oxygenolysis (" light industry water pollution control ") to the organic pollutant in the water simultaneously, thereby efficiently kill the bacterium in the water, virus, mould, algae and parasite, degraded hormone and harmful chemical molecular.Ultraviolet radiation sterilization required duration of contact is extremely short in second (chlorine sterilization duration of contact in hour), the oxidation capacity of optical excitation oxidation is higher more than 10 times (" practical wastewater processing technology ") than only using the oxidation of chlorine sterilization, and effective to more harmful microorganisms.And because this technology does not change the attribute of water, do not introduce new microorganism and compound, do not cause 2 pollutions, so classify as in the world the safe green technology.
The ultraviolet ray of the multiplex wavelength 254nm of existing ultra-violet sterilization on the market, and do not add oxygenant, because wavelength is long, therefore energy density is low, can only sterilization, do not possess photodissociation and intensify oxidative function (" light industry water pollution control "), and effect is subjected to suppress (" sterilization and the natural organic matter of water disinfection and natural organic matter water ") in chloride environment.Its sterilization speed is low so the long power consumption of required time is large, can not can effectively decompose harmful chemical such as dyestuff, hydrogen sulfide, monochloro methane, trichloromethane and benzene as strong oxidizer simultaneously.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of can sterilization, again can be except sewage water treatment method and the equipment of the middle harmful chemical that anhydrates.
In order to solve above technical problem, the invention provides a kind of sewage water treatment method, may further comprise the steps:
A) with sewage through the first ultraviolet irradiation, obtain the first treatment solution and ozone; The described first ultraviolet wavelength is 180 ~ 260nm;
B) the first treatment solution that step a) is obtained and ozone obtain clean water and oxygen through the second ultraviolet irradiation; The described second ultraviolet wavelength is 250 ~ 260nm.
Preferably, described the first ultraviolet ray is 180 ~ 190nm for wavelength.
Preferably, described sewage is 1 ~ 100s through the first ultraviolet irradiation and the second ultraviolet irradiation time.
The invention provides a kind of waste disposal plant, comprising:
Housing;
The first silica tube is nested in the described housing, and forms the circular channel with described housing;
The second silica tube, it is inner to be parallel to described the first silica tube, and is provided with ultraviolet emission device in described the second silica tube;
Described circular channel is outer path, and described the first silica tube inside is inner gateway, and an end of described inner gateway is sewage inlet, and the other end communicates with outer path; Described outer path one end is connected with described inner gateway, and the other end is sewage outlet;
Described the first silica tube is the ultraviolet ray of 180 ~ 190nm and to allow wavelength be the silica tube that the ultraviolet ray of 250 ~ 260nm is passed through for shielding wavelength.
Preferably, described ultraviolet emission device comprises the first ultraviolet emission device and the second ultraviolet emission device, described the first ultraviolet emission device can emission wavelength be the ultraviolet ray of 180 ~ 190nm, and described the second ultraviolet emission device can emission wavelength be the ultraviolet ray of 250 ~ 260nm.
Preferably, the space density b of the space density a of described the first ultraviolet emission device and described the second ultraviolet emission device satisfies following relation: a/b=5 ~ 10.
The present invention also provides a kind of waste disposal plant, comprising:
Housing, opening is arranged at top;
Agitator is arranged in the described housing; Described agitator comprises stir shaft and blade, and described blade is positioned at described housing bottom, and described stir shaft connects described blade and drives described blade rotation.
Ultraviolet emission device is fixed on the anchor that is independent of stir shaft by mounting block.；
Water monitoring device is arranged at described housing top.
Preferably, described ultraviolet emission device comprises the first ultraviolet emission device and the second ultraviolet emission device, described the first ultraviolet emission device can emission wavelength be the ultraviolet ray of 180 ~ 190nm, and described the second ultraviolet emission device can emission wavelength be the ultraviolet ray of 250 ~ 260nm.
Preferably, described the first ultraviolet emission device is arranged at described housing top, be arranged in parallel with stir shaft; Described the second ultraviolet emission device is arranged at described housing bottom.
Preferably, the space density b of the space density a of described the first ultraviolet emission device and described the second ultraviolet emission device satisfies following relation: a/b=5 ~ 10.
The invention provides a kind of sewage water treatment method, first with sewage at the first ultraviolet irradiation, obtain the first treatment solution and ozone; The described first ultraviolet wavelength is 180 ~ 260nm; Again with affiliated the first treatment solution and ozone through the second ultraviolet irradiation, obtain clean water and oxygen; The described second ultraviolet wavelength is 250 ~ 260nm.The present invention is owing to be the uviolizing of 180 ~ 260nm with sewage through wavelength first, mineral compound decomposing organic compounds in the oxidation sewage, obtain the first treatment solution and ozone, be the uviolizing of 250 ~ 260nm with described the first treatment solution and ozone through wavelength, kill unwanted bacteria and microorganism in the first treatment solution, and be oxygen with ozone decomposed, finally reach the purifying treatment effect of sewage.Method provided by the invention can be decomposed the poisonous and harmful compound on the basis of effectively killing bacterium and microorganism in the sewage, thereby sewage is further purified, and can satisfy use.Show that according to experimental data preparation method's provided by the invention sterilizing rate 99.99%, compound elimination factor are 80%.
The present invention also provides two kinds of waste disposal plants, and a kind of is closed treatment unit, and a kind of is open treatment unit.Described closed treatment unit comprises: housing; The first silica tube is nested in the described housing, and forms the circular channel with described housing; The second silica tube, it is inner to be parallel to described the first silica tube, and is provided with ultraviolet emission device in described the second silica tube; Described circular channel is outer path, and described the first silica tube inside is inner gateway, and an end of described inner gateway is sewage inlet, and the other end communicates with outer path; Described outer path one end is connected with described inner gateway, and the other end is sewage outlet; Described the first silica tube is the ultraviolet ray of 180 ~ 190nm and to allow wavelength be the quartz socket tube that the ultraviolet ray of 250 ~ 260nm is passed through for shielding wavelength.In use, sewage enters interior passageway by described sewage inlet, under the uviolizing that actinolyte excites, carry out the uviolizing first time, described first time, ultraviolet wavelength was 180 ~ 190nm, then described sewage enters exterior passage way by interior passageway, because described the first silica tube can shield the ultraviolet ray of 180 ~ 190nm and allow wavelength is that the ultraviolet ray of 250 ~ 260nm is passed through, so sewage only can be accepted the uviolizing that wavelength is 250 ~ 260nm at exterior passage way, so can realize different UV-irradiation twice, in sterilization, remove the poisonous and harmful compound in the decontaminated water.
The present invention also provides a kind of open waste disposal plant, comprising: housing, and opening is arranged at top; Ultraviolet emission device is arranged at described top; Water monitoring device is arranged at described housing top; Agitator is arranged in the described housing; Described agitator comprises stir shaft and blade, and described blade is positioned at described housing bottom, and described stir shaft connects described blade and drives described blade rotation.Open waste disposal plant provided by the invention, sewage enters in the housing by the housing upper opening, then the stirring by agitator forms stable field of flow, the sewage on housing top flows downward along stir shaft along with stirring, carry out the uviolizing first time behind the contact ultraviolet emission device, then will be along with the stirring of agitator, sewage moves to bottom of device, and get back to described housing bottom away from stir shaft, accept for the second time uviolizing, finally in continuous working cycle, remove bacterium and toxic compounds in anhydrating.
Description of drawings
Energy absorption parameter and the propagation distance curve of Fig. 1 light wave provided by the invention in liquid water;
The enclosed water treater vertical view that Fig. 2 embodiment of the invention provides;
The enclosed water treater sectional view that Fig. 3 embodiment of the invention provides;
The disassembly diagram of the enclosed water treater that Fig. 4 inventive embodiments provides;
The open water treating device sectional view that Fig. 5 embodiment of the invention provides;
Field of flow synoptic diagram in the open water treating device that Fig. 6 embodiment of the invention provides is processed around the paddle.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiments of the invention are described, but should be appreciated that the just restriction for further specifying the features and advantages of the present invention rather than patent of the present invention being required of these descriptions.
Explanation of nouns
Quartz burner: quartz burner is the light source that a class can produce the larger UV-light of useful range, and ultraviolet ray is the general name of electromagnetic spectrum medium wavelength from 10nm to the 400nm radiation.
COD: chemical oxygen demand (COD), in waste water, wastewater treatment plant effluent and the contaminated water, can be by the oxygen equivalent of the material of strong oxidizer oxidation (being generally organism).In the operational management of the research of stream pollution and trade effluent character and waste water treatment plant, it is important and can comparatively fast measure an Organic pollutants parameter, and chemical oxygen demand (COD) (COD) is again often as weighing what index of organic content in the water.Chemical oxygen demand (COD) is larger, illustrates that water body is subjected to organic pollution more serious.
BOD:(Biochemical Oxygen Demand writes a Chinese character in simplified form) biochemical oxygen demand (BOD) or biochemical oxygen demand (chemical oxygen requirement on the five), one of the aerobic pollution matter content such as organism comprehensive indication in the expression water.Organism in the water is described because the biochemical action of microorganism carries out oxygenolysis, the total quantity of the oxygen in water that consumes when making it inorganicization or aerification.
254: the wavelength that ultraviolet lamp sends is 254nm, is characterized in that germicidal action is strong, and operating distance is long.
185: the wavelength that ultraviolet lamp sends is 185nm, is characterized in that oxygenizement is strong, and operating distance is short.
The invention provides a kind of sewage water treatment method, may further comprise the steps:
A) with sewage through the first ultraviolet irradiation, obtain the first treatment solution and ozone; The described first ultraviolet wavelength is 180 ~ 190nm;
B) the first treatment solution that step a) is obtained and ozone obtain clean water and oxygen through the second ultraviolet irradiation; The described second ultraviolet wavelength is 250 ~ 260nm.
Technological difficulties are effectively to utilize the high-energy of ultraviolet ray 185 and keep holistic cost.Being different from 254 common on market products, wavelength 185(1) luminous energy is high, so generating unit must highly be exported high-level efficiency; (2) wavelength is short, and the fast operating range of decay is short to and only has a cm in water, so the water body of large flow must come abundant Rapid Flow through fluorescent tube by flow Field Design; (3) can produce ozone by the photodissociation water-soluble oxygen, remove ozone in order to avoid produce the byproduct bromic acid so the water treatment code requirement is equipped with the subsequent disposal device of wavelength 254, thereby increase cost.So the present invention, provides a kind of scheme that can either realize two kinds of uviolizings in conjunction with the characteristics of above-mentioned two kinds of UV-light.
Be illustrated in figure 1 as natural light at water transmission distance and velocity of propagation curve, wherein fascia cinerea partly is visible region, as can be seen from the figure, the distance of the respectively corresponding 8 ~ 12mm of the ultraviolet ray of 180 ~ 190nmnm length ultraviolet line and 250 ~ 260nmnm wavelength and 0.8 ~ 1.2m, in order to make the easier operation of sewage disposal, so more preferably wavelength is the ultraviolet ray of 185nm and 254nm.For the effect that increases sewage disposal also preferably adds the material that hydrogen peroxide, chlorine, sodium hydroxide etc. can sterilizations in described sewage, the present invention does not limit.
According to the present invention, consider to append again the water treatment standard that 254nm length ultraviolet line is processed after 185nm length ultraviolet line is processed, this product design two kinds of waste disposal plants, such as Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, include the two kinds of ultraviolet emission devices that can launch different wave length, be applicable to respectively closed and open processing.
Want effective kill microorganisms, ultraviolet dosage need to reach 10 ~ 80mJ/cm
2.J represent Jiao Er.For example uitraviolet intensity is 3X10
4UW/cm
2The time, corresponding required irradiation time is 3 ~ 25 seconds.
Fig. 2, Fig. 4 are vertical view and the disassembly diagrams of enclosed sewage treatment unit, comprise: interior passageway a, exterior passage way b, the first silica tube c, the second silica tube d, ultraviolet emission device e and housing f, and loam cake g, described ultraviolet emission device is quartz burner, and described quartz burner is fixed on the described loam cake g by mounting block, and is positioned at the first silica tube.Fig. 3 is the sectional view of described enclosed sewage treatment unit.Wherein, described S1 is the effluent stream Inbound, and S2 is that clean water flows out direction.
According to the present invention, 10 times of these industry experiences of 185 wavelength according to 254 wavelength reactor for treatment flows, in a closure casing, the preferred high-quality Stainless steel 316 inner bag that uses, nested the first silica tube, described the first silica tube and described housing form annular channels, and described annular channels is exterior passage way b, and described the first silica tube inside is interior passageway a.The ultraviolet ray of described the first silica tube preferable mask 185nm.The preferred symmetric offset spread of ultraviolet emission device keeps being 2 times of 185 wavelength operating range, 2cm between each fluorescent tube and with internal surface of sleeve pipe in the first silica tube.Described ultraviolet emission device overcoat has the second silica tube, the protection ultraviolet emission device.One end of described inner gateway is sewage inlet, and the other end communicates with outer path; Described outer path one end is connected with described inner gateway, and the other end is sewage outlet.
The water inlet h that sewage is connected with interior passageway by loam cake first, the interior passageway a ultraviolet emission device of flowing through carries out the irradiation first time, closely to accept the uviolizing of wavelength as the ultraviolet ray of 185nm and wavelength as 254nm, simultaneously photodissociation and intensify compound in the oxidation sewage produces byproduct ozone; After flowing into exterior passage way, because 185 shielded by quartz socket tube, water is only accepted 254 wavelength, and in radiosterilization, the ozone that before produces is drawn 254 energy and become harmless water-soluble oxygen simultaneous oxidation sterilization.Exterior passage way with on cover setting water outlet link to each other, the water after the processing flows out from described water outlet.
Need to guarantee to be 185 wavelength operating range 1cm between each fluorescent tube and with internal surface of sleeve pipe in order fully to use 185 wavelength, quartz socket tube diameter and fluorescent tube to arrange.Since wavelength is effective irradiation distance of the ultraviolet emission device of 185nm be wavelength be 254nm ultraviolet emission device 1/10, so when selecting two kinds of launching devices, need to consider the space density of two kinds of ultraviolet emission devices.According to the present invention, the space density a of described the first ultraviolet emission device and the space density b of described the second ultraviolet emission device satisfy following relation: a/b=5 ~ 10.
As shown in Figure 2, can use the quartz burner of 6 185nm and the quartz burner of 1 254nm, tube diameter 2cm, the long 1m of reactor, sterilization palpus irradiation time 8 seconds.Optimization design provides the first silica tube diameter 12cm, and diameter of the housing 36cm, water treatment flow can reach per hour 40 tons.
Fig. 5 is the sectional view of open waste disposal plant, comprising: stir shaft 1, ultraviolet emission device 2, water quality monitoring system 3, blade 4, anchor 5, water outlet 6 and housing 7.Water enters in the housing from upper opening from top to bottom, discharges from the water outlet of lower housing portion.Sewage is flowed through first and is positioned at the fluorescent tube on turning axle top, accepts 185nm length ultraviolet linear light solution in the time of in 1cm and intensifies oxidation; Water rotation and the lower stir shaft that leaves simultaneously, fluorescent tube 1m all accepts the radiosterilization of 254nm ultraviolet wavelength with interior.Can control the flow field by adjusting agitating vane shape, the degree of depth and rotating speed, adjust simultaneously the 185nm/254nm length ultraviolet heat input output of fluorescent tube according to the upstream water quality characteristics; Use Statistic optimization then, scientifically choose preferred embodiment, finally reach the downstream water quality requirement of expection, and guarantee that sterilization/sterilization/COD falls and subtract efficient, water treatment flow and cost performance.According to the present invention, preferably the ultraviolet emission device of described 185nm is arranged on the top of described housing, and with the parallel distribution of described stir shaft, do not have the distance between the ultraviolet emission device to be preferably 1 ~ 2cm, the ultraviolet emission device of described 254nm is arranged on the bottom of described housing, more preferably evenly be arranged on described blade around, do not affecting in the situation that blade rotates, as much as possible near blade.Since wavelength is effective irradiation distance of the ultraviolet emission device of 185nm be wavelength be 254nm ultraviolet emission device 1/10, so when selecting two kinds of launching devices, need to consider the space density of two kinds of ultraviolet emission devices.According to the present invention, the space density a of described the first ultraviolet emission device and the space density b of described the second ultraviolet emission device satisfy following relation: a/b=5 ~ 10.
According to the present invention, fixed form the present invention of described ultraviolet emission device does not do restriction, and preferably when waste disposal plant when being closed, described ultraviolet emission device is fixed in described the first silica tube by mounting block; When waste disposal plant when being open, described ultraviolet emission device is fixed on the anchor that is independent of described stir shaft by mounting block.
Above-mentioned control method is to determine the parameter such as time, the discharge of sewage of sewage disposal by back-to-back method.The requirement of water quality is adjusted the parameter of ultraviolet purification system according to the downstream.Qin/Qout=F（E185，E254，T，R）。Q represents the water quality parameter of inlet and outlet, comprises the activated bacterial number, COD/BOD, chlorine, ozone concn etc.The ratio F value of importing and exporting is larger, and system effect is better.E185, E254 represent respectively the power of lamp tube of 185nm length ultraviolet line and 254nm length ultraviolet line, and power is higher, and effect is faster.The T role of delegate time, the time is longer, and effect is better.R represents flow velocity, and R and T are inversely proportional to.Spend when high when the downstream bacterium, heighten E254; When COD/BOD is too high, heighten E185.
Fig. 6 is the field of flow synoptic diagram of open waste disposal plant, and wherein, synoptic diagram is cylindrical coordinate, z, and r, D is respectively axially, radially and normal direction.Vz, Vr, Vd be respectively flow velocity axially, radially and normal component.
According to the present invention, before sewage disposal, preferably in described sewage, add hydrogen peroxide and be used for improving wastewater treatment efficiency.Ultraviolet proton can make H fast
20
2Resolve into two hydroxyl radical free radicals, highly active hydroxyl radical free radical can be sent out with organic generation oxidation and answer, and makes organic matter degradation.So in water, add hydrogen peroxide (superoxol), can improve organic degraded by ultra violet lamp.Concentration according to hydrogen peroxide of the present invention is preferably 10 ~ 100mg/L, 20 ~ 80mg/L more preferably, and the addition of hydrogen peroxide and the volume ratio of sewage are preferably 0.001 ~ 0.01:1, and more preferably 0.001 ~ 0.009:1 most preferably is 0.005 ~ 0.006:1.
Ultraviolet lamp tube with same set of system set 254nm length ultraviolet line and two kinds of wavelength of 185nm length ultraviolet line. through special hydromeehanics design, allow current flow through near the fluorescent tube within the operating range. first by 185nm length ultraviolet line fluorescent tube, utilize organic molecule and multiple-microorganism in the strong oxidizing property water of decomposition of 185 length ultraviolet lines. then by 254nm length ultraviolet line fluorescent tube, reach the purpose of sterilization, the ozone reduction that simultaneously 185nm length ultraviolet line is produced is oxygen. its advantage is that a pipe is dual-purpose, save cost, improved the water treatment flow in the unit volume, prolonged lamp tube service life. guaranteeing and to improve the efficient of ultraviolet ray oxidation disinfection in medium and great water body, thereby reduce the final purpose that the required power of quartz burner reaches environmental protection.This design has reached energy-saving safe (50～100 watts of lamp consumptions of 8 tons of water tanks of unit, 40 tons of sewage consume with 200～300 watts of lamps) and high cleanliness (sterilizing rate 99.99%, the sterilization compound be higher than 80%) integrated.
The invention describes two kinds of ultraviolet wastewater treatment systems, closed and open water body reactor.Mode with 185nm length ultraviolet line and the combination of 254nm length ultraviolet line is disposed of sewage.Current are first by 185nm length ultraviolet line fluorescent tube, utilize organic molecule and multiple-microorganism in the strong oxidizing property water of decomposition of 185nm length ultraviolet line. then by 254nm length ultraviolet line fluorescent tube, reach the purpose of sterilization, the ozone reduction that simultaneously 185nm length ultraviolet line is produced is oxygen.
The design of the fluorescent tube of uses advanced of the present invention and Fluid Circulation actuation techniques are guaranteeing and to improve the efficient of ultraviolet ray oxidation disinfection in medium and great water body, thereby the required power of reduction quartz burner reaches the final purpose of environmental protection.This design has reached energy-saving safe (50～100 watts of lamp consumptions of 8 tons of water tanks of unit, 40 tons of sewage consume with 200～300 watts of lamps) and high cleanliness (sterilizing rate 99.99%, sterilization chemical is higher than 80%) integrated.Can be widely used in advanced treatment and the sterilization of city domestic sewage, the toxic organic compound matter in the professional sewage of sterilizing, the multiple dyestuff that produces of printing and dyeing mill for example, the benzene that produces in medicine and the agricultural chemicals manufacturing processed.
Be the specific embodiment of the invention below, elaborate technical solution of the present invention.
Carry out sewage disposal according to Fig. 2, Fig. 3 and waste disposal plant shown in Figure 4.Described waste disposal plant comprises: interior passageway a, exterior passage way b, the first silica tube c, the second silica tube d, ultraviolet emission device e and housing f, and loam cake g, described ultraviolet emission device are quartz burner, described quartz burner is fixed on the described loam cake g by mounting block, and is positioned at the first silica tube.After finishing, Fig. 4 equipment obtains apparatus for treating sewage as shown in Figure 5.
Sewage is with water treatment amount 50,000 m
3/ sky enters interior passageway, peak flow 2500m
3/ h detects entrance COD 100mg/m by water quality testing meter
3, coliform count 1X10
6/ L. treater uses several 300 of quartz burner. and wherein can excite 270 of the fluorescent tubes of 185nm length ultraviolet line, can excite 30 of the fluorescent tubes of 254nm length ultraviolet line, average single power 65w, ultraviolet average intensity is 3X10
4UW/cm
2, current average contact time 6s.Tube diameter 2cm, fluorescent tube length is 0.5m.The long 1m of reactor.The first silica tube diameter 50cm, diameter of the housing 2m.
Then described sewage enters exterior passage way, proceeds the uviolizing of 254nm wavelength, and the current average contact time is 6s, detects the water outlet coliform count through outlet and drops to 3000/L.COD drops to 50mg/m
3. from operating cost analysis, power consumption only is 0.007 yuan/m
3
Carry out sewage disposal according to waste disposal plant shown in Figure 5, stir shaft 1, ultraviolet emission device 2, water quality monitoring system 3, blade 4, anchor 5, water outlet 6 and housing 7.Described ultraviolet emission device is quartz burner, and described quartz burner is fixed on the anchor that is independent of turning axle by mounting block.Water from top to bottom, flowing through first is positioned at the fluorescent tube on turning axle top, accepts 185nm length ultraviolet linear light solution in the time of in 1cm and intensifies oxidation; Water rotation and the lower stir shaft that leaves simultaneously, fluorescent tube 1m all accepts the radiosterilization of 254nm ultraviolet wavelength with interior.Tube diameter 2cm, length is 0.8m
Sewage is with water treatment amount 20,000 m
3/ day, peak flow 1000m
3/ h detects entrance COD 100mg/m by water quality testing meter
3, coliform count 1X10
6/ L. treater uses several 50 of quartz burner. and wherein can excite 40 of the fluorescent tubes of 185nm length ultraviolet line, can excite 10 of the fluorescent tubes of 254nm length ultraviolet line, average single power 65w, ultraviolet average intensity is 3X10
4UW/cm
2, current average contact time 10s.Drop to 4000/L.COD through outlet detection water outlet coliform count and drop to 60mg/m
3
More than a kind of water treatment method provided by the invention and device thereof are described in detail; having used specific case herein sets forth principle of the present invention and embodiment; the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. a sewage water treatment method is characterized in that, may further comprise the steps:
A) with sewage through the first ultraviolet irradiation, obtain the first treatment solution and ozone; The described first ultraviolet wavelength is 180 ~ 260nm;
B) the first treatment solution that step a) is obtained and ozone obtain clean water and oxygen through the second ultraviolet irradiation; The described second ultraviolet wavelength is 250 ~ 260nm.
2. treatment process according to claim 1 is characterized in that, described the first ultraviolet ray is 180 ~ 190nm for wavelength.
3. treatment process according to claim 2 is characterized in that, described sewage is 1 ~ 100s through the first ultraviolet irradiation and the second ultraviolet irradiation time.
4. a waste disposal plant is characterized in that, comprising:
Housing;
The first silica tube is nested in the described housing, and forms the circular channel with described housing;
The second silica tube, it is inner to be parallel to described the first silica tube, and is provided with ultraviolet emission device in described the second silica tube;
Described circular channel is outer path, and described the first silica tube inside is inner gateway, and an end of described inner gateway is sewage inlet, and the other end communicates with outer path; Described outer path one end is connected with described inner gateway, and the other end is sewage outlet;
Described the first silica tube is the ultraviolet ray of 180 ~ 190nm and to allow wavelength be the silica tube that the ultraviolet ray of 250 ~ 260nm is passed through for shielding wavelength.
5. device according to claim 4, it is characterized in that, described ultraviolet emission device comprises the first ultraviolet emission device and the second ultraviolet emission device, described the first ultraviolet emission device can emission wavelength be the ultraviolet ray of 180 ~ 190nm, and described the second ultraviolet emission device can emission wavelength be the ultraviolet ray of 250 ~ 260nm.
6. will remove 4 described devices according to right, it is characterized in that, the space density a of described the first ultraviolet emission device and the space density b of described the second ultraviolet emission device satisfy following relation: a/b=5 ~ 10.
7. a waste disposal plant is characterized in that, comprising:
Housing, opening is arranged at top;
Agitator is arranged in the described housing; Described agitator comprises stir shaft and blade, and described blade is positioned at described housing bottom, and described stir shaft connects described blade and drives described blade rotation;
Ultraviolet emission device is fixed on the anchor that is independent of stir shaft by mounting block;
Water monitoring device is arranged at described housing top.
8. device according to claim 7, it is characterized in that, described ultraviolet emission device comprises the first ultraviolet emission device and the second ultraviolet emission device, described the first ultraviolet emission device can emission wavelength be the ultraviolet ray of 180 ~ 190nm, and described the second ultraviolet emission device can emission wavelength be the ultraviolet ray of 250 ~ 260nm.
9. device according to claim 8 is characterized in that, described the first ultraviolet emission device is arranged at described housing top, be arranged in parallel with stir shaft; Described the second ultraviolet emission device is arranged at described housing bottom.
10. device according to claim 8 is characterized in that, the space density a of described the first ultraviolet emission device and the space density b of described the second ultraviolet emission device satisfy following relation: a/b=5 ~ 10.
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| CN117303623A (en) * | 2023-08-30 | 2023-12-29 | 浙江理工大学桐乡研究院有限公司 | Method for treating wastewater by coupling ozone type ultraviolet light with non-ozone type ultraviolet light |
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