CN102690005A - Method for treating organic wastewater through photoelectric catalytic oxidation - Google Patents
Method for treating organic wastewater through photoelectric catalytic oxidation Download PDFInfo
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- CN102690005A CN102690005A CN201210201785XA CN201210201785A CN102690005A CN 102690005 A CN102690005 A CN 102690005A CN 201210201785X A CN201210201785X A CN 201210201785XA CN 201210201785 A CN201210201785 A CN 201210201785A CN 102690005 A CN102690005 A CN 102690005A
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- photoelectrocatalysioxidization oxidization
- waste water
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- photoelectrocatalysioxidization
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Abstract
The invention relates to a method for treating organic wastewater through photoelectric catalytic oxidation, comprising the steps of: forming a ferric-carbon microelectrolysis system with waste ferric-carbon or other substances as a raw material; irradiating by using ultraviolet light or other special light sources; adopting modified TiO2 or other oxide and sulfide semiconductors as a photocatalyst; and meanwhile, introducing air or other oxidizing gases to the bottom for aeration, so that wastewater generates a photoelectric catalytic oxidation reaction to oxidize an organic matter into CO2 and H2O, and the treated wastewater can reach the standard to discharge or can be recycled.
Description
One. technical field
The present invention relates to the treatment of Organic Wastewater technical field, specifically be meant the novel method of a kind of iron-carbon micro-electrolysis and photocatelysis oxidation integrated processing organic waste water, the waste water after the processing can qualified discharge or is recycled.
Two. background technology
Along with industrial expansion, increasing fine chemical product constantly comes out, and in these products, many materials not only can serious environment pollution, and is good at by biological degradation, as to organism such as amino toluene, chlorophenol, polychlorobiphenyl, oil of mirbane.The treatment technology of domestic this type organic waste water mainly contains absorption method, membrane separation process, extraction process, photochemical method, ozone oxidation method, luxuriant and rich with fragrance quinoline (Fenton) reagent method, charcoal method, Coagulation Method etc. at present.The purpose of absorption method, membrane separation process, extraction process etc. is to isolate the organic substance of difficult degradation, and this can bring secondary pollution.Photochemical method, ozone oxidation method, luxuriant and rich with fragrance quinoline (Fenton) reagent method etc. are difficult to effectively destroy its structure to the stable material of structures such as polychlorobiphenyl ten minutes, and consume the chemical reagent in Dali, and processing efficiency is low, and running cost is high.The charcoal method only is applicable to the processing of little pollutant effluents, and the regeneration of activated carbon difficulty.The disadvantage of Coagulation Method is the secondary pollution deposition that produces coagulating agent and pollutent.
Three. summary of the invention
To the problems referred to above, the method that the present invention provides a kind of photoelectrocatalysioxidization oxidization to handle organic waste water makes that waste water after handling can qualified discharge or recycle.
The principle of the invention and technology specifically comprise:
(1) iron-carbon micro-electrolysis and photochemical catalytic oxidation ultimate principle are following:
1. electrochemical reaction takes place in iron-carbon micro-electrolysis under acid aerobic condition, and its reaction process is following:
Anode (Fe): Fe-2e → Fe2+
Negative electrode (C): 2H++2e → 2 [H] → H2
2. during light-catalyzed reaction, semi-conductive valence band electronics generation band-to-band transition promptly from the valence to the conduction band, thereby produces light induced electron (e-) and hole (h+).The dissolved oxygen trapped electron that is adsorbed on nano grain surface this moment forms superoxide anion, and the hole will be adsorbed on the hydroxide ion and the water of catalyst surface and be oxidized to hydroxyl free radical.
3. in same system; Fe2+, atom H, superoxide anion and hydroxyl free radical that reaction produces; They have high chemically reactive, can change many organic structures and characteristic in the waste water, make organism generation chain rupture, open loop; And can be, even also can thoroughly decompose some inorganicss with oxidation operation to final product CO2 and H2O.
(2) for realizing above-mentioned purpose, method of the present invention is specific as follows:
The present invention comprises pre-treatment, photoelectrocatalysioxidization oxidization processing and the aftertreatment of waste water to the technical scheme of organic waste water photoelectrocatalysioxidization oxidization treatment process; It is characterized in that it is to be that raw material or other material are formed the little electrolysis system of iron charcoal with waste and old iron charcoal that described photoelectrocatalysioxidization oxidization is handled; By UV-light or the irradiation of other special light sources; With modification TiO2 or other oxide compound sulfide semiconductor photocatalyst, bottom bubbling air or other oxidizing gas carry out aeration simultaneously, make the reaction of waste water generation photoelectrocatalysioxidization oxidization; Oxidation operation is become CO2 and H2O, realize standard wastewater discharge or recycle.
Pre-treatment in the photoelectrocatalysioxidization oxidization treatment process of indication of the present invention refers to the waste water after the oil removal is pooled to the pH regulator pond, in this pond, add lime and regulate pH to 3 ~ 6, after the natural subsidence with supernatant by pump delivery in the photoelectrocatalysioxidization oxidization treatment system.Aftertreatment is meant the processing of photoelectrocatalysioxidization oxidization being handled the back water outlet, in outlet sump, adds behind the bleaching powder decoloring qualified discharge or recycles, and part effluent recycling photoelectrocatalysioxidization oxidization treatment system not up to standard continues reaction.
Effect of the present invention is following:
1. the little electrolysis raw material of the iron charcoal among the present invention is waste and old iron charcoal, has realized the second stage employ of waste and old data.
2. the present invention is at the little electrolysis system successful Application of iron charcoal photocatalysis technology; Many organic structures and characteristic in the waste water have not only been changed; Make organism generation chain rupture, open loop, and can be, even also can thoroughly decompose some inorganicss with oxidation operation to final product CO2 and H2O.
3. the present invention can administer multiple organic waste water, is specially adapted to the harmless treatment of organic wastewater with difficult degradation thereby, and non-secondary pollution.
Four. description of drawings
Fig. 1 is the schematic flow sheet that a kind of photoelectrocatalysioxidization oxidization of the present invention is handled the method for organic waste water.
Five. embodiment
Below in conjunction with accompanying drawing 1 and embodiment the present invention is done further detailed description.
Implementation step of the present invention is following:
1, pre-treatment is pooled to the pH regulator pond with the organic waste water after the oil removal, in this pond, add lime and regulate pH to 3 ~ 6, after the natural subsidence with supernatant by pump delivery in the photoelectrocatalysioxidization oxidization treatment system.
2, photoelectrocatalysioxidization oxidization is handled, and little electrolysis system is a raw material by waste and old iron charcoal, and wherein iron and charcoal weight ratio are 1～5:1, and the ratio of organic waste water and iron charcoal is 10～50:1, adds iron filings to guarantee its normal operation according to waste simultaneously; Photocatalyst adopts the nano TiO 2 photocatalyst filtering net, and light source adopts the uv lamp of 365nm wavelength, and the aeration flow is regulated 2～10 hours reaction times by handling wastewater flow rate.
3, aftertreatment adds behind the bleaching powder decoloring qualified discharge or recycles in outlet sump, part effluent recycling photoelectrocatalysioxidization oxidization treatment system not up to standard continues reaction.
Wherein embodiment treatment effect such as table 1:
Table 1
Claims (2)
1. a photoelectrocatalysioxidization oxidization is handled the method for organic waste water; The pre-treatment, the photoelectrocatalysioxidization oxidization that comprise waste water are handled and aftertreatment; It is characterized in that: it is to be that raw material or other material are formed the little electrolysis system of iron charcoal with waste and old iron charcoal that described photoelectrocatalysioxidization oxidization is handled; By UV-light or the irradiation of other special light sources, with modification TiO2 or other oxide compound sulfide semiconductor photocatalyst, bottom bubbling air or other oxidizing gas carry out aeration simultaneously; Make the reaction of waste water generation photoelectrocatalysioxidization oxidization, oxidation operation is become CO2 and H2O.
2. handle the method for organic waste water according to the said a kind of photoelectrocatalysioxidization oxidization of claim 1; It is characterized in that: pre-treatment refers to the waste water after the oil removal is pooled to the pH regulator pond; In this pond, add lime and regulate pH to 3 ~ 6, after the natural subsidence with supernatant by pump delivery in the photoelectrocatalysioxidization oxidization treatment system; Aftertreatment is meant the processing of photoelectrocatalysioxidization oxidization being handled the back water outlet, in outlet sump, adds behind the bleaching powder decoloring qualified discharge or recycles, and part effluent recycling photoelectrocatalysioxidization oxidization treatment system not up to standard continues reaction.
Priority Applications (1)
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| CN201210201785XA CN102690005A (en) | 2012-06-15 | 2012-06-15 | Method for treating organic wastewater through photoelectric catalytic oxidation |
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| CN201210201785XA CN102690005A (en) | 2012-06-15 | 2012-06-15 | Method for treating organic wastewater through photoelectric catalytic oxidation |
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| CN102690005A true CN102690005A (en) | 2012-09-26 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030243A (en) * | 2012-12-17 | 2013-04-10 | 常州大学 | Method for treating methyl naphthol waste water by ferric-carbon micro-electrolysis and TiO2/gamma-Al2O3 catalyst |
| CN103073134A (en) * | 2013-01-14 | 2013-05-01 | 常州大学 | Method for processing alpha naphthol wastewater by utilizing iron-carbon microelectrolysis and catalyst |
| CN103466746A (en) * | 2013-09-03 | 2013-12-25 | 河海大学 | Ultraviolet-sunlight combined purifying device for water purification |
| CN103803695A (en) * | 2014-02-25 | 2014-05-21 | 天津城建大学 | Method for Fenton-like light-catalyzed reaction system for zero-valent iron and TiO2 photocatalytic coupling |
| CN103952717A (en) * | 2014-05-07 | 2014-07-30 | 北京化工大学 | Photoelectrochemical decomposition water and organic synthesis coupled cascade reaction design method |
| CN104341063A (en) * | 2013-07-29 | 2015-02-11 | 黄明科 | Efficient treatment technology for electroplating sewage |
| CN105152433A (en) * | 2015-10-22 | 2015-12-16 | 北京赛科康仑环保科技有限公司 | Method for removing COD (chemical oxygen demand) from copper/molybdenum extraction raffinate mixed wastewater |
| CN105198139A (en) * | 2015-10-22 | 2015-12-30 | 北京赛科康仑环保科技有限公司 | Hydrometallurgy industry raffinate waste water COD removal method |
| CN108862774A (en) * | 2018-07-13 | 2018-11-23 | 青岛万源环境科技有限公司 | A kind of high-leveled and difficult sewage treatment equipment |
| CN108892288A (en) * | 2018-06-27 | 2018-11-27 | 中国石油天然气集团有限公司 | A kind of oil field waste liquid electro-catalysis high-efficient decolorizing method and device |
| CN109133533A (en) * | 2018-10-12 | 2019-01-04 | 青岛理工大学 | A kind of high concentration liquid crystal waste water integral treatment method |
| CN110183010A (en) * | 2019-04-24 | 2019-08-30 | 广西广宇水资源技术开发有限公司 | A kind of high protein waste water pretreatment system and method |
| CN113321353A (en) * | 2021-04-23 | 2021-08-31 | 大唐环境产业集团股份有限公司 | Photoelectrocatalysis wastewater treatment system and treatment method |
| CN113526646A (en) * | 2021-08-20 | 2021-10-22 | 中南大学 | electro-Fenton system for in-situ production of hydrogen peroxide by cathode/anode and application of electro-Fenton system in strengthening degradation of organic pollutants |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030243A (en) * | 2012-12-17 | 2013-04-10 | 常州大学 | Method for treating methyl naphthol waste water by ferric-carbon micro-electrolysis and TiO2/gamma-Al2O3 catalyst |
| CN103073134A (en) * | 2013-01-14 | 2013-05-01 | 常州大学 | Method for processing alpha naphthol wastewater by utilizing iron-carbon microelectrolysis and catalyst |
| CN104341063A (en) * | 2013-07-29 | 2015-02-11 | 黄明科 | Efficient treatment technology for electroplating sewage |
| CN103466746A (en) * | 2013-09-03 | 2013-12-25 | 河海大学 | Ultraviolet-sunlight combined purifying device for water purification |
| CN103803695A (en) * | 2014-02-25 | 2014-05-21 | 天津城建大学 | Method for Fenton-like light-catalyzed reaction system for zero-valent iron and TiO2 photocatalytic coupling |
| CN103952717A (en) * | 2014-05-07 | 2014-07-30 | 北京化工大学 | Photoelectrochemical decomposition water and organic synthesis coupled cascade reaction design method |
| CN105152433A (en) * | 2015-10-22 | 2015-12-16 | 北京赛科康仑环保科技有限公司 | Method for removing COD (chemical oxygen demand) from copper/molybdenum extraction raffinate mixed wastewater |
| CN105198139A (en) * | 2015-10-22 | 2015-12-30 | 北京赛科康仑环保科技有限公司 | Hydrometallurgy industry raffinate waste water COD removal method |
| CN108892288B (en) * | 2018-06-27 | 2022-02-01 | 中国石油天然气集团有限公司 | Electrocatalysis high-efficiency decolorization method and device for oil field waste liquid |
| CN108892288A (en) * | 2018-06-27 | 2018-11-27 | 中国石油天然气集团有限公司 | A kind of oil field waste liquid electro-catalysis high-efficient decolorizing method and device |
| CN108862774A (en) * | 2018-07-13 | 2018-11-23 | 青岛万源环境科技有限公司 | A kind of high-leveled and difficult sewage treatment equipment |
| CN108862774B (en) * | 2018-07-13 | 2021-10-26 | 青岛万源环境科技有限公司 | High-difficulty wastewater treatment equipment |
| CN109133533B (en) * | 2018-10-12 | 2021-03-23 | 青岛理工大学 | Integrated treatment method for high-concentration liquid crystal wastewater |
| CN109133533A (en) * | 2018-10-12 | 2019-01-04 | 青岛理工大学 | A kind of high concentration liquid crystal waste water integral treatment method |
| CN110183010A (en) * | 2019-04-24 | 2019-08-30 | 广西广宇水资源技术开发有限公司 | A kind of high protein waste water pretreatment system and method |
| CN113321353A (en) * | 2021-04-23 | 2021-08-31 | 大唐环境产业集团股份有限公司 | Photoelectrocatalysis wastewater treatment system and treatment method |
| CN113321353B (en) * | 2021-04-23 | 2022-04-26 | 大唐环境产业集团股份有限公司 | Photoelectrocatalysis wastewater treatment system and treatment method |
| CN113526646A (en) * | 2021-08-20 | 2021-10-22 | 中南大学 | electro-Fenton system for in-situ production of hydrogen peroxide by cathode/anode and application of electro-Fenton system in strengthening degradation of organic pollutants |
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