CN105060586A - Coating wastewater treatment apparatus - Google Patents
Coating wastewater treatment apparatus Download PDFInfo
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- CN105060586A CN105060586A CN201510464286.3A CN201510464286A CN105060586A CN 105060586 A CN105060586 A CN 105060586A CN 201510464286 A CN201510464286 A CN 201510464286A CN 105060586 A CN105060586 A CN 105060586A
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Abstract
The invention relates to a coating wastewater treatment apparatus. Raw water enters an equalizing tank, water in the equalizing tank enters a prepositioned filter through an elevator pump and is filtered, and filtered water enters a degassing and carbonizing linkage device; a carbonization membrane module is arranged in the degassing and carbonizing linkage system, and the carbonization membrane module is connected with a tail gas active carbon processing device through a vacuum pump; the outlet of the carbonization membrane module is connected with a reagent adding pool a, and wastewater in the reagent adding pool a enters a micro-electrolysis device through a pump a; the water outlet of the micro-electrolysis device is connected with a reagent adding pool b, and wastewater in the reagent adding pool b enters a coiled pipe through a pump b and undergoes a Fenton reaction; the water outlet of the coiled pipe is connected with a reagent adding pool c, and the outlet of the reagent adding pool c is connected with a coagulation and precipitation tank; and a clear liquid at the upper portion of the coagulation and precipitation tank enters a photocatalysis device through a pump c, the water outlet of photocatalysis device is connected with an intermediate water tank, and water in the intermediate water tank enters an enhanced filter through a pump d. The apparatus has the advantages of reduction of the COD value of coating wastewater, simple flow and long service life.
Description
Technical field:
The present invention relates to wastewater treatment equipment field, relate to a kind of coating waste-water treatment unit in particular.
Background technology:
Toluene, dimethylbenzene, dicyclopentadiene, phthalic anhydride, cis-butenedioic anhydride, butene dioic acid (suitable, anti-), methylal, acetal, ethanol, dme, butyl ester, Hypophosporous Acid, 50 etc. are had in the coating waste-water main component of manufacturing enterprise's discharge, these.Normal containing hazardous and noxious substances such as phenols, benzene class and heavy metals (surface treatment), the COD=4000-5000mg/L of water is produced in coating waste-water evaporation.PH=4-12.5 is not etc.Phenol is a kind of chemical auxocarcinogen, aquatic organism can be made to suffer damage if be discharged into by the phenolic wastewater of high density in waters.Also containing plumbous and chromium in the pigment that current coatings industry uses.Lead is current pollution element the most widely, and it relates generally to brain, cerebellum and spinal cord and peripheral nerve to the damaging effect of hematopoietic device.Chromium compounds toxicity is very large, enters human body mainly through tap water and food.Therefore coating waste-water is very serious to the harm in waters.Organism kinds in waste water is many, complicated component, and COD content is high, and has certain toxicity, and the feature of this type of waste water is: the waste water generation of (1) unit product is few, but pollutent composition is very complicated; (2) containing multiple virose, the macromolecular organic compound that is difficult to biochemical degradation, and dense; (3) in waste water, solid contents is also very high.The treatment process of paint waste water has physico-chemical process and biochemical process, materialization partition method mainly contains air supporting, coagulating sedimentation, absorption, micro-filtration, ultrafiltration, reverse osmosis membrane separation etc., biochemical treatment process mainly contains Aerobic biological process, anaerobic biological treatment etc., the many paint wastewater treatment equipments of the combined formation of these techniques.But it is tediously long to there is technical process, equipment can not play one's part to the full, and processing cost is high, and qualified discharge poor stability, treatment effect has much room for improvement.
Summary of the invention:
The object of the invention is for the deficiencies in the prior art part, provide a kind of coating waste-water treatment unit, this device reduces the COD value of coating waste-water, technical process is simple, long service life, and investment cost is few, convenient operating maintenance, running cost is low, and treatment effect is stablized.
Technology solution of the present invention is as follows:
A kind of coating waste-water treatment unit, it comprises equalizing tank, enters Yuan Shui in equalizing tank; Water in described equalizing tank is entered after fore filter filters by lift pump and enters in degassed carbonization linkage system; The bottom of described degassed carbonization linkage system is connected with aerating apparatus; Carbonized film assembly is provided with in described degassed carbonization linkage system, carbonized film assembly is connected with gac exhaust gas processing device by vacuum pump, waste water through the process of carbonized film assembly makes the volatile organic matter solubleness of solvable, compatibility reduce and volatilize, under the vacuum take-off of vacuum pump volatile organic matter by Strong oxdiative after enter gac exhaust gas processing device; The outlet of described carbonized film assembly is connected to dosing pond a, adds dilute sulphuric acid to regulate the pH value in it in a of dosing pond; Waste water in described dosing pond a enters micro-electrolysis device by pump a, and micro-electrolysis device and described aerating apparatus link together; The water outlet of described micro-electrolysis device is connected to dosing pond b, and after the b dosing of dosing pond, the waste water in the b of dosing pond enters serpentine tube by pump b and carries out Fenton's reaction; The water outlet of described serpentine tube is connected to dosing pond c, and after the c dosing of dosing pond, the outlet of dosing pond c is connected to coagulative precipitation tank; The clear liquid on described coagulative precipitation tank top enters photocatalysis apparatus by pump c, and the water outlet of described photocatalysis apparatus is connected to intermediate water tank, and the water of intermediate water tank enters intensive filtration device by pump d, and intensive filtration device reduces the COD value of waste water, and final waste water is discharged.
As preferably, described former water enters equalizing tank by pump, and its water inlet speed is 3.5t/h, and the volume of equalizing tank is 20 ~ 30m
3, after reaching certain water yield in equalizing tank, device starts normal operation.
As preferably, described carbonized film assembly is composed in series by 30 hollow fiber tube membrane, hollow fiber tube membrane is provided with inlet mouth, air outlet, water-in and water outlet, 30 hollow fiber tube membrane have employed center water distributor makes periosteum fill evenly in carbonized film component internal, gas, water two phase-contact surface are large, and degassing efficiency is high.
As preferably, the pipeline between described degassed carbonization linkage system and vacuum pump is provided with vacuum pressure gauge.
As preferably, be provided with UV-device outside described photocatalysis apparatus, photocatalysis apparatus with the photosensitive titanium dioxide film of height for semi-conductor titanium deoxide catalyst, under the irradiation of the ultraviolet light wave of specific wavelength, and add complex compound in photocatalysis apparatus, enhance ultraviolet ability after adding complex compound.
As preferably, described intensive filtration device adopts PTFE two-way stretch hydrophilic film to be the strainer of filter core.
Beneficial effect of the present invention is:
Present invention reduces the COD value of coating waste-water, COD value is down to below 700mg/L, and carbonized film assembly of the present invention is composed in series by 30 hollow fiber tube membrane, and hollow fiber tube membrane has the features such as film contact area is large, film silk is tough.Compare with other like product domestic, there is following several large advantage: 1, hollow fiber tube membrane adopts two-way stretch technology, can the percentage of open area of accurate controlling diaphragm pipe, applicable different process purposes; 2, hollow fiber tube membrane is through hydrophobization process, ensures for a long time " crossing cannot restrain one's anger water "; Periosteum after hydrophobization process, the center water distributor of have employed periosteum is filled in component internal evenly, gas, water two phase-contact surface are larger, thus degassing efficiency is higher.
Micro-electrolysis device tool of the present invention has the following advantages: (1) speed of reaction is fast, and commonly industrial wastewater only needs half an hour to a few hours; (2) organic pollution materials scope is acted on wide, as: the difficulty containing even fluorine, carbon double bond, nitro, halogeno-group structure removes degradation of organic substances matter etc. good degradation effect; (3) technical process is simple, long service life, investment cost are few, convenient operating maintenance, running cost are low, treatment effect is stable.A small amount of micro-electrolysis reaction agent is only consumed in treating processes.Fine electrolyser only needs regularly to add without the need to changing, and adds and also directly drops into without the need to carrying out activating.(4) waste water can form ferrous iron or the iron ion of ecosystem after microelectrolysis processing in water, and have coagulation more better than common coagulants, without the need to adding the coagulating agent such as molysite again, COD clearance is high, and can not cause secondary pollution to water; (5) have good coagulation effect, colourity, COD clearance are high, can improve the biodegradability of waste water with amount to a great extent.
The present invention waste water COD be down to up to standard after, enter intensive filtration device.In this device, intensive filtration device adopts PTFE two-way stretch hydrophilic film to be the strainer of filter core, effectively can remove colourity, wait the organism of denier.Traditional ultra-filtration membrane can not remove micro quantity organic pollutant and a small amount of, micro-metal ion, and the character such as the solublization of the micelle effect of surfactant molecule and micelle can make micropollutant in water be gathered in Surfactants surface and realize being separated through filter membrane.Waste water COD can be made to be reduced to lower, the stability of assurance device.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is structural representation of the present invention.
Embodiment:
Embodiment, is shown in accompanying drawing 1, a kind of coating waste-water treatment unit, and it comprises equalizing tank 1, enters Yuan Shui in equalizing tank; Water in described equalizing tank is entered after fore filter 3 filters by lift pump 2 and enters in degassed carbonization linkage system 4; The bottom of described degassed carbonization linkage system is connected with aerating apparatus 5; Carbonized film assembly is provided with in described degassed carbonization linkage system, carbonized film assembly is connected with gac exhaust gas processing device 7 by vacuum pump 6, waste water through the process of carbonized film assembly makes the volatile organic matter solubleness of solvable, compatibility reduce and volatilize, under the vacuum take-off of vacuum pump volatile organic matter by Strong oxdiative after enter gac exhaust gas processing device; The outlet of described carbonized film assembly is connected to dosing pond a8, adds dilute sulphuric acid to regulate the pH value in it in a of dosing pond; Waste water in described dosing pond a enters micro-electrolysis device 10 by pump a9, and micro-electrolysis device and described aerating apparatus link together; The water outlet of described micro-electrolysis device is connected to dosing pond b11, and after the b dosing of dosing pond, the waste water in the b of dosing pond enters serpentine tube 13 by pump b12 and carries out Fenton's reaction; The water outlet of described serpentine tube is connected to dosing pond c14, and after the c dosing of dosing pond, the outlet of dosing pond c is connected to coagulative precipitation tank 15; The clear liquid on described coagulative precipitation tank top enters photocatalysis apparatus 17 by pump c16, the water outlet of described photocatalysis apparatus is connected to intermediate water tank 18, the water of intermediate water tank enters intensive filtration device 20 by pump d19, and intensive filtration device reduces the COD value of waste water, and final waste water is discharged.
Described former water enters equalizing tank by pump, and its water inlet speed is 3.5t/h, and the volume of equalizing tank is 20 ~ 30m
3, after reaching certain water yield in equalizing tank, device starts normal operation.
Described carbonized film assembly is composed in series by 30 hollow fiber tube membrane, hollow fiber tube membrane is provided with inlet mouth, air outlet, water-in and water outlet, 30 hollow fiber tube membrane have employed center water distributor makes periosteum fill evenly in carbonized film component internal, gas, water two phase-contact surface are large, and degassing efficiency is high.
Pipeline between described degassed carbonization linkage system and vacuum pump is provided with vacuum pressure gauge.
UV-device is provided with outside described photocatalysis apparatus, photocatalysis apparatus with the photosensitive titanium dioxide film of height for semi-conductor titanium deoxide catalyst, under the irradiation of the ultraviolet light wave of specific wavelength, and add complex compound in photocatalysis apparatus, after adding complex compound, enhance ultraviolet ability.
Described intensive filtration device adopts PTFE two-way stretch hydrophilic film to be the strainer of filter core.
Technological process of the present invention is as follows:
(1) former water enters equalizing tank: former water enters equalizing tank 1 by pump, and its water inlet speed is 3.5t/h, and the volume of equalizing tank is 24m
3, after reaching certain water yield in equalizing tank, device starts normal operation.
(2) in equalizing tank, water is entered after fore filter 3 filters by lift pump 2 and enters degassed carbonization linkage system 4: be provided with carbonized film assembly in degassed carbonization linkage system, described carbonized film assembly is composed in series by 30 hollow fiber tube membrane, hollow fiber tube membrane is provided with inlet mouth, air outlet, water-in and water outlet, periosteum adopts hydrophobization process, ensures long mistake cannot restrain one's anger water; 30 hollow fiber tube membrane have employed center water distributor makes periosteum fill evenly in carbonized film component internal, and gas, water two phase-contact surface are large, and degassing efficiency is high.The two-way stretch PTFE microporous hydrophobic membrane of waste water in carbonized film assembly, simultaneously under aerating apparatus 5 acts on, producing high-density aeration makes solvable, the miscible volatile organic matter in waste water lose vapor-liquid equilibrium, utilize the carbonic acid gas in air to make waste water obtain carbonization simultaneously, make the volatile organic matter solubleness of solvable, compatibility reduce and volatilize, under the vacuum take-off of vacuum pump 6 volatile organic matter by Strong oxdiative after enter gac exhaust gas processing device 7.
(3) micro-electrolysis device: the water outlet of carbonized film assembly enters micro-electrolysis device 10 pairs of high concentrated organic wastewaters by pump a9 and processes after the a8 dosing of dosing pond, and in a of dosing pond, dosing is dilute sulphuric acid, and chemical feeding quantity regulates automatically according to pH value, makes pH be 2 ~ 3; The micro-electrolysis material adopted in described micro-electrolysis device is 3.8V iron-carbon filling material, simultaneously micro-electrolysis device is under the effect of described aerating apparatus 5, and 3.8V iron-carbon filling material efficiently can remove Coal Gas Washing Cycling Water organism also can avoid filler passivation in operational process or the phenomenon that hardens simultaneously.Micro-electrolysis device needs routine cleaning, and cleaning way adopts ultrasonic cleaning.
Micro-electrolysis device it be in cold situation, utilize and be filled in micro-electrolysis material self in waste water and produce 1.2V potential difference and electrolysis treatment is carried out to waste water, to reach the object of degradable organic pollutant.When after micro-electrolysis device water flowing, in equipment, countless microcell devices can be formed, form an electric field at its action space.The nascent state [H], the Fe that produce in treating processes
2+etc. can with the many component generation redox reactions in waste water, than if the chromophoric group of coloring matter in damaged colored waste water or auxochrome group, even chain rupture, reach the effect of degradation and decolorization; The Fe generated
2+be oxidized to Fe further
3+their hydrate has stronger adsorption-flocculation activity, particularly after adding adjusting PH with base value, generate ferrous hydroxide and ferric hydroxide colloid flocculation agent, their adsorptive power is hydrolyzed the ferric hydroxide colloid obtained far away higher than general medicament, the molecule, metallics and the organic macromolecule that disperse in a large amount of planar water of energy.Its principle of work processes waste water based on the acting in conjunction of electrochemistry, redox, physical adsorption and flocculation sediment.
The micro-electrolysis material that weak electrolysis mechanism adopts traditionally is generally iron filings and charcoal, soda acid activation will be added before using, be easy to passivation in the process used harden, again because iron and charcoal are physical contacts, between be easy to form sealing coat and light electrolysis can not be proceeded and ineffective, which results in and change micro-electrolysis material continually, not only the large cost height of workload also affects treatment effect and the efficiency of waste water.In addition, traditional micro-electrolysis material surface-area is too little also makes wastewater treatment need long time, and add a ton water cost of investment, this has all had a strong impact on utilization and the popularization of weak electrolysis mechanism.Efficient micro-electrolysis device of the present invention adopts special 3.8V iron-carbon filling material efficiently to remove, and Coal Gas Washing Cycling Water organism also can avoid the filler passivation in operational process simultaneously, the phenomenon such as harden.
(4) Fenton's reaction: micro-electrolysis device water outlet is after the b11 dosing of dosing pond, and water enters serpentine tube 13 by pump b12 and carries out Fenton's reaction, and the b dosing of medicine pond comes adjust ph and content of hydrogen peroxide.
(5) coagulating sedimentation: after Fenton's reaction, water outlet enters coagulative precipitation tank 15 and precipitates after the c14 dosing of dosing pond.
(6) photochemical catalysis: the clear liquid on coagulative precipitation tank top enters photocatalysis apparatus 17 by pump c16, the organism in clear liquid can be removed, described photocatalysis apparatus with the photosensitive titanium dioxide film of height for semi-conductor titanium deoxide catalyst, under the irradiation of the ultraviolet light wave of specific wavelength, the ultraviolet ability of contention is enhanced after introducing complex compound in device, even if organism much also can absorb light generation photodissociation in wider wavelength region, the Fe that photodissociation produces
2+can fast and H, O react generation-OH, improve H, O utilization ratio.Improve the utilization ratio to ultraviolet and visible ray, and then improve and can produce electron hole to its film surface of high-concentration waste water, the organism of film surface adsorption is activated by the H+ with strong oxidizing property, with H
20
2interlock is oxidized and degrades, thus reaches the object of organics removal.
(7) intensive filtration: photochemical catalysis water outlet has intermediate water tank 18 to collect, enter intensive filtration device 20 by pump d19 again to discharge, described intensive filtration device adopts PTFE two-way stretch hydrophilic film to be the strainer of filter core, effectively can remove colourity, the organism of denier and a small amount of, micro-metal ion, the micelle effect of the surfactant molecule of PTFE two-way stretch hydrophilic film and the solublization of micelle can make micropollutant in water be gathered in Surfactants surface and realize being separated through filter membrane, waste water COD can be made to be reduced to lower, the stability of assurance device.
Above-described embodiment is the specific descriptions of carrying out the present invention; just the present invention is further described; can not be interpreted as limiting the scope of the present invention, those skilled in the art makes some nonessential improvement according to the content of foregoing invention and adjustment all falls within protection scope of the present invention.
Claims (6)
1. a coating waste-water treatment unit, is characterized in that: it comprises equalizing tank, enters Yuan Shui in equalizing tank; Water in described equalizing tank is entered after fore filter filters by lift pump and enters in degassed carbonization linkage system; The bottom of described degassed carbonization linkage system is connected with aerating apparatus; Carbonized film assembly is provided with in described degassed carbonization linkage system, carbonized film assembly is connected with gac exhaust gas processing device by vacuum pump, waste water through the process of carbonized film assembly makes the volatile organic matter solubleness of solvable, compatibility reduce and volatilize, under the vacuum take-off of vacuum pump volatile organic matter by Strong oxdiative after enter gac exhaust gas processing device;
The outlet of described carbonized film assembly is connected to dosing pond a, adds dilute sulphuric acid to regulate the pH value in it in a of dosing pond; Waste water in described dosing pond a enters micro-electrolysis device by pump a, and micro-electrolysis device and described aerating apparatus link together;
The water outlet of described micro-electrolysis device is connected to dosing pond b, and after the b dosing of dosing pond, the waste water in the b of dosing pond enters serpentine tube by pump b and carries out Fenton's reaction;
The water outlet of described serpentine tube is connected to dosing pond c, and after the c dosing of dosing pond, the outlet of dosing pond c is connected to coagulative precipitation tank;
The clear liquid on described coagulative precipitation tank top enters photocatalysis apparatus by pump c, and the water outlet of described photocatalysis apparatus is connected to intermediate water tank, and the water of intermediate water tank enters intensive filtration device by pump d, and intensive filtration device reduces the COD value of waste water, and final water is discharged.
2. a kind of coating waste-water treatment unit according to claim 1, is characterized in that: described former water enters equalizing tank by pump, and its water inlet speed is 3.5t/h, and the volume of equalizing tank is 20 ~ 30m
3, after reaching certain water yield in equalizing tank, device starts normal operation.
3. a kind of coating waste-water treatment unit according to claim 1, it is characterized in that: described carbonized film assembly is composed in series by 30 hollow fiber tube membrane, hollow fiber tube membrane is provided with inlet mouth, air outlet, water-in and water outlet, 30 hollow fiber tube membrane have employed center water distributor makes periosteum fill evenly in carbonized film component internal, gas, water two phase-contact surface are large, and degassing efficiency is high.
4. a kind of coating waste-water treatment unit according to claim 1, is characterized in that: the pipeline between described degassed carbonization linkage system and vacuum pump is provided with vacuum pressure gauge.
5. a kind of coating waste-water treatment unit according to claim 1, it is characterized in that: outside described photocatalysis apparatus, be provided with UV-device, photocatalysis apparatus with the photosensitive titanium dioxide film of height for semi-conductor titanium deoxide catalyst, under the irradiation of the ultraviolet light wave of specific wavelength, and add complex compound in photocatalysis apparatus, enhance ultraviolet ability after adding complex compound.
6. a kind of coating waste-water treatment unit according to claim 1, is characterized in that: described intensive filtration device adopts PTFE two-way stretch hydrophilic film to be the strainer of filter core.
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| CN201510464286.3A CN105060586B (en) | 2015-07-31 | 2015-07-31 | A kind of coating waste-water processing unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107265557A (en) * | 2017-06-20 | 2017-10-20 | 天津大学 | Connection in series-parallel combination oil-polluted water cleaning system based on photocatalysis and electrolysis tech |
| CN107381981A (en) * | 2016-01-21 | 2017-11-24 | 李宇花 | One kind removes waste water Minerals oil treatment process |
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| KR100251405B1 (en) * | 1997-09-08 | 2000-04-15 | 이규철 | Wastewater treatment system using electrolysis and photocatalyst and synthetic method of the catalyst |
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| CN107381981A (en) * | 2016-01-21 | 2017-11-24 | 李宇花 | One kind removes waste water Minerals oil treatment process |
| CN107487950A (en) * | 2016-01-21 | 2017-12-19 | 李宇花 | A kind of deep treatment method for removing waste water mineral oil in fluid |
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| CN107265557A (en) * | 2017-06-20 | 2017-10-20 | 天津大学 | Connection in series-parallel combination oil-polluted water cleaning system based on photocatalysis and electrolysis tech |
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