CN101555080A - Treatment method for waste water containing dimethyl formamide and treatment device - Google Patents
Treatment method for waste water containing dimethyl formamide and treatment device Download PDFInfo
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- CN101555080A CN101555080A CNA2009100395645A CN200910039564A CN101555080A CN 101555080 A CN101555080 A CN 101555080A CN A2009100395645 A CNA2009100395645 A CN A2009100395645A CN 200910039564 A CN200910039564 A CN 200910039564A CN 101555080 A CN101555080 A CN 101555080A
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- dimethyl formamide
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Abstract
The invention discloses a treatment method for waste water containing dimethyl formamide. The method comprises the following steps: introducing waste water into an aeration catalyzing micro cell, electrolyzing the waste water by the primary cell filling in the aeration catalyzing micro cell, carrying out the steps of oxidization and the like by the catalyst electrode waste water on the catalyst electrooxidation reactor; the treatment method integrates various materialization methods such as electrolysis, catalysis, oxidization, absorption, coagulation and the like to form a highly efficient reinforcement and materialization integrated technology, thus completely oxidizing toxic and harmful organic pollutants such as DMF, DMAC and the like. The invention has the advantages of high treatment efficiency, low operation cost, capable of being industrialized and the like.
Description
[technical field]
The present invention relates to a kind of sewage and wastewater treatment method and treatment unit, more particularly, the present invention relates to a kind of method of wastewater treatment and treatment unit that contains dimethyl formamide, dimethyl formamide.
[background technology]
Dimethyl formamide (DMF), N,N-DIMETHYLACETAMIDE (DMAC), both are widely used in pharmacy, petrochemical complex, synthetic fiber industry, synthetic leather industry etc. as the organic solvent of excellent property and main fine chemical material.Because molecular end all is two methyl, and chemical reaction does not take place, on amount, do not consume, all enter in the factory effluent.DMF has bio-toxicity, enters water body microbiostatic activity later on, the severe contamination water body; DMF can enter in the body via respiratory tract, digestive tube and skin, also has certain toxicity.China's occupational contact poison hazard rating classification (GB5044-85) determines that DMF is III level (moderate harm), occupational health standard (GBZ 2-2002) the working space adverse factor occupation exposure limit specified time weighted average allowable concentration 20mgm-3 of country of the People's Republic of China (PRC), hygiology institute of Chinese medicine institute points out after deliberation that DMF is the highest in the domestic surface water and allows that the recommendation of mass concentration is 25 mgL-1 that it is very necessary therefore the waste water that contains DMF, DMAC being handled.DMF, DMAC method of wastewater treatment there are biochemical process, supercritical water oxidation method, photochemical catalytic oxidation, physico-chemical process (rectifying, absorption, extraction), chemical method (alkalization method) both at home and abroad at present.General these methods can not be up hill and dale with poisonous and hazardous organic pollutant oxidative degradations such as the DMF in the waste water, DMAC, thus can only be as pre-treatment, and can not be as final treatment process; And the Financial cost of these present treatment processs is too high, to such an extent as to a lot of enterprise can't put into production.Show according to data, yet there are no mature technology at present both at home and abroad and can be used in the production practice.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, provide a kind of and can provide the treatment unit of realizing this method simultaneously up hill and dale with poisonous and hazardous organic pollutant oxidative degradation, the low method of wastewater treatment that contains dimethyl formamide, dimethyl formamide of processing costs such as the DMF in the waste water, DMAC.
For achieving the above object, the present invention has adopted following technical proposal:
Contain the method for wastewater treatment of dimethyl formamide, dimethyl formamide, it comprises the steps
Step a: the waste water that will contain dimethyl formamide, dimethyl formamide imports in the aeration and catalyzing micro cell;
At least carry out step b once: by the galvanic cell filler in the aeration and catalyzing micro cell dimethyl formamide, dimethyl formamide are carried out electrolysis, then the waste water after electrolysis is imported to the water quality of regulating waste water in first equalizing tank;
At least carry out step c once: will import in the electrochemical catalytic oxidization reaction tank through the waste water after regulating, by the absorption of the catalytically active packing material in electrochemical catalytic oxidization reaction tank dimethyl formamide, dimethyl formamide, utilize the catalysis electrode on the electrochemical catalytic oxidization reaction tank that dimethyl formamide, dimethyl formamide are carried out oxidation, then the waste water after oxidation is imported to the water quality of regulating waste water in second equalizing tank;
Steps d: wastewater treatment is finished, and it is directly discharged in second equalizing tank.
Step b repeats twice before carrying out step c, and step c repeats twice between the steps d carrying out.
Described aeration and catalyzing micro cell is made by PVC or stainless steel, and the galvanic cell filler is the mixture of catalyzer and iron filings.
Described electrochemical catalytic oxidization reaction tank is made by polytetrafluoroethylplastic plastic, and catalytically active packing material is a particulate state.
Described catalysis electrode is the titanium electrode that surface-coated has the complex metal oxides layer.
Contain dimethyl formamide, the wastewater treatment equipment of dimethyl formamide, it includes the little electrolysis cells of at least one aeration and catalyzing and at least one electrochemical catalytic oxidization reaction member, the little electrolysis cells head and the tail of all aeration and catalyzings link together in turn, the little electrolysis cells of each aeration and catalyzing includes the aeration and catalyzing micro cell that is respectively equipped with water-in and water outlet, first equalizing tank, in each aeration and catalyzing micro cell the galvanic cell filler is housed, the water-in of aeration and catalyzing micro cell is as the little electrolysis cells head end of aeration and catalyzing, the water outlet of aeration and catalyzing micro cell is connected with the water-in of first equalizing tank, the water outlet of first equalizing tank is as the tail end of the little electrolysis cells of aeration and catalyzing
All electrochemical catalytic oxidization reaction member head and the tail link together in turn, each electrochemical catalytic oxidization reaction member includes the electrochemical catalytic oxidization reaction tank that is respectively equipped with water-in and water outlet, second equalizing tank, in each electrochemical catalytic oxidization reaction tank catalytically active packing material is housed, be provided with catalysis electrode in the electrochemical catalytic oxidization reaction tank, this catalysis electrode is connected with power supply, the water-in of electrochemical catalytic oxidization reaction tank is as electrochemical catalytic oxidization reaction member head end, the water outlet of electrochemical catalytic oxidization reaction tank is connected with the water-in of second equalizing tank, and the water outlet of second equalizing tank is as the tail end of electrochemical catalytic oxidization reaction member;
The aeration and catalyzing micro cell water-in of the little electrolysis cells of first aeration and catalyzing is connected with water intaking valve, the aeration and catalyzing micro cell water outlet of the little electrolysis cells of last aeration and catalyzing is connected with the electrochemical catalytic oxidization reaction tank water-in of first electrochemical catalytic oxidization reaction member, between the little electrolysis cells of aeration and catalyzing, between little electrolysis cells of aeration and catalyzing and the electrochemical catalytic oxidization reaction member, and be provided with acid proof pump between the electrochemical catalytic oxidization reaction member.
The little electrolysis cells of described aeration and catalyzing is two, and described electrochemical catalytic oxidization reaction member is two.Described power supply is a constant current regulated power supply.
Compared with prior art the invention has the beneficial effects as follows:
1, treatment process of the present invention is that multiple physical chemistry methods such as electrolysis, catalysis, oxidation, absorption, coagulation are integrated in one, and forms efficiently to strengthen materialization and handle integrated technology, can make poisonous and hazardous organic pollutants such as DMF, DMAC in the waste water by exhaustive oxidation.
2, be 15000mg/L at waste water COD, adopt treatment process of the present invention that waste water was handled 5.0～6.0 hours, waste water after treatment, water quality can reach the primary standard COD＜100mg/L of national sewage comprehensive emission standard (GB8978-1996); But biochemical indicator can be brought up to more than 0.45 by 0.2.
3, processing costs of the present invention is lower, is far smaller than the working cost of other treatment process.
4, processing efficiency height of the present invention, running cost is low, can realize industrialization, has tangible environment, society, economic benefit.
[description of drawings]
Fig. 1 is the schema of treatment process of the present invention;
Fig. 2 is the structural representation of treatment unit of the present invention;
Fig. 3 adopts the structure iron of two aeration and catalyzing micro cells and two electrochemical catalytic oxidization reaction tanks for treatment unit of the present invention.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiments of the present invention.
Shown in accompanying drawing 1, introduce a kind of method of wastewater treatment that contains dimethyl formamide, dimethyl formamide, it comprises the steps
Step a: the waste water that will contain dimethyl formamide, dimethyl formamide imports in the aeration and catalyzing micro cell of being made by PVC or stainless steel 1;
At least carry out step b once: dimethyl formamide, dimethyl formamide are carried out electrolysis by the galvanic cell filler in the aeration and catalyzing micro cell 1, described galvanic cell filler is the mixture of catalyzer and iron filings, then the waste water after electrolysis is imported to the water quality of regulating waste water in first equalizing tank 2;
At least carry out step c once: will import in the electrochemical catalytic oxidization reaction tank of making by polytetrafluoroethylplastic plastic 3 through the waste water after regulating, catalytically active packing material absorption dimethyl formamide, dimethyl formamide by electrochemical catalytic oxidization reaction tank 3 endoparticle shapes, utilize 5 pairs of dimethyl formamides of catalysis electrode, dimethyl formamide on the electrochemical catalytic oxidization reaction tank to carry out oxidation, described catalysis electrode 5 imports to the water quality of regulating waste water in second equalizing tank with the waste water after oxidation then for surface-coated has the titanium electrode of complex metal oxides layer;
Steps d: wastewater treatment is finished, and it is directly discharged in second equalizing tank 4.
The number of times that above-mentioned step b and step c carry out can carry out according to the situation of reality, and step b of the present invention and step c carry out twice.
Referring to shown in Figure 2, introduce a kind of wastewater treatment equipment that contains dimethyl formamide, dimethyl formamide, can realize above-mentioned treatment process by this treatment unit.This treatment unit includes the little electrolysis cells 10 of at least one aeration and catalyzing and at least one electrochemical catalytic oxidization reaction member 20.
Little electrolysis cells 10 head and the tail of all aeration and catalyzings link together in turn, the little electrolysis cells 10 of each aeration and catalyzing includes aeration and catalyzing micro cell 1, first equalizing tank 2 that is respectively equipped with water-in and water outlet, each aeration and catalyzing micro cell 1 is made by PVC or stainless steel, the galvanic cell filler is housed in it, this galvanic cell filler is the mixture of catalyzer and iron filings, and first equalizing tank 2 is made by stainless steel.The water-in of described aeration and catalyzing micro cell 1 is as little electrolysis cells 10 head ends of aeration and catalyzing, and the water outlet of aeration and catalyzing micro cell 1 is connected with the water-in of first equalizing tank 2, and the water outlet of first equalizing tank 2 is as the tail end of the little electrolysis cells 10 of aeration and catalyzing,
All electrochemical catalytic oxidization reaction member 20 head and the tail link together in turn, each electrochemical catalytic oxidization reaction member 20 includes electrochemical catalytic oxidization reaction tank 3, second equalizing tank 4 that is respectively equipped with water-in and water outlet, each electrochemical catalytic oxidization reaction tank 3 is made by polytetrafluoroethylplastic plastic, be equipped with in it in granular catalytically active packing material catalytically active packing material is housed, be provided with catalysis electrode 5 in the electrochemical catalytic oxidization reaction tank 3, this catalysis electrode 5 is connected with power supply 6, and this power supply 6 is a constant current regulated power supply.Second equalizing tank 4 is made by stainless steel.The water-in of described electrochemical catalytic oxidization reaction tank 3 is as electrochemical catalytic oxidization reaction member 20 head ends, the water outlet of electrochemical catalytic oxidization reaction tank 3 is connected with the water-in of second equalizing tank 4, and the water outlet of second equalizing tank 4 is as the tail end of electrochemical catalytic oxidization reaction member 20;
Aeration and catalyzing micro cell 1 water-in of the little electrolysis cells 10 of first aeration and catalyzing is connected with water intaking valve 7, aeration and catalyzing micro cell 1 water outlet of the little electrolysis cells 10 of last aeration and catalyzing is connected with electrochemical catalytic oxidization reaction tank 3 water-ins of first electrochemical catalytic oxidization reaction member 20, between the little electrolysis cells 10 of aeration and catalyzing, between little electrolysis cells 10 of aeration and catalyzing and the electrochemical catalytic oxidization reaction member 20, and be provided with acid proof pump 8 between the electrochemical catalytic oxidization reaction member 20.
Last electrochemical catalytic oxidization reaction member 20 also can include only electrochemical catalytic oxidization reaction tank 3, and omit second equalizing tank, adopt two little electrolysis cells of aeration and catalyzing and two electrochemical catalytic oxidization reaction members exactly referring to Fig. 3, and last electrochemical catalytic oxidization reaction member omits the structure iron of second equalizing tank.
Claims (10)
1, the method for wastewater treatment that contains dimethyl formamide, dimethyl formamide is characterized in that comprising the steps
Step a: the waste water that will contain dimethyl formamide, dimethyl formamide imports in the aeration and catalyzing micro cell (1);
At least carry out step b once: by the galvanic cell filler in the aeration and catalyzing micro cell (1) dimethyl formamide, dimethyl formamide are carried out electrolysis, then the waste water after electrolysis is imported to the water quality of regulating waste water in first equalizing tank (2);
At least carry out step c once: will import in the electrochemical catalytic oxidization reaction tank (3) through the waste water after regulating, by the absorption of the catalytically active packing material in the electrochemical catalytic oxidization reaction tank (3) dimethyl formamide, dimethyl formamide, utilize the catalysis electrode (5) on the electrochemical catalytic oxidization reaction tank that dimethyl formamide, dimethyl formamide are carried out oxidation, then the waste water after oxidation is imported to the water quality of regulating waste water in second equalizing tank (4);
Steps d: wastewater treatment is finished, and it is directly discharged in second equalizing tank (4).
2, according to the described method of wastewater treatment that contains dimethyl formamide, dimethyl formamide of claim 1, it is characterized in that step b repeats twice before carrying out step c.
3,, it is characterized in that step c repeats twice between the steps d carrying out according to the described method of wastewater treatment that contains dimethyl formamide, dimethyl formamide of claim 1.
4, according to claim 1 or the 2 or 3 described method of wastewater treatment that contain dimethyl formamide, dimethyl formamide, it is characterized in that described aeration and catalyzing micro cell (1) made by PVC or stainless steel, the galvanic cell filler is the mixture of catalyzer and iron filings.
5, the method for wastewater treatment that contains dimethyl formamide, dimethyl formamide according to claim 4 is characterized in that described electrochemical catalytic oxidization reaction tank (3) made by polytetrafluoroethylplastic plastic, and catalytically active packing material is a particulate state.
6, the method for wastewater treatment that contains dimethyl formamide, dimethyl formamide according to claim 5 is characterized in that described catalysis electrode (5) has the titanium electrode of complex metal oxides layer for surface-coated.
7, contain dimethyl formamide, the wastewater treatment equipment of dimethyl formamide, it is characterized in that including the little electrolysis cells of at least one aeration and catalyzing (10) and at least one electrochemical catalytic oxidization reaction member (20), the little electrolysis cells of all aeration and catalyzings (10) head and the tail link together in turn, the little electrolysis cells of each aeration and catalyzing (10) includes the aeration and catalyzing micro cell (1) that is respectively equipped with water-in and water outlet, first equalizing tank (2), in each aeration and catalyzing micro cell (1) the galvanic cell filler is housed, the water-in of aeration and catalyzing micro cell (1) is as the little electrolysis cells of aeration and catalyzing (10) head end, the water outlet of aeration and catalyzing micro cell (1) is connected with the water-in of first equalizing tank (2), the water outlet of first equalizing tank (2) is as the tail end of the little electrolysis cells of aeration and catalyzing (10)
All electrochemical catalytic oxidization reaction member (20) head and the tail link together in turn, each electrochemical catalytic oxidization reaction member (20) includes the electrochemical catalytic oxidization reaction tank (3) that is respectively equipped with water-in and water outlet, second equalizing tank (4), in each electrochemical catalytic oxidization reaction tank (3) catalytically active packing material is housed, be provided with catalysis electrode (5) in the electrochemical catalytic oxidization reaction tank (3), this catalysis electrode (5) is connected with power supply (6), the water-in of electrochemical catalytic oxidization reaction tank (3) is as electrochemical catalytic oxidization reaction member (20) head end, the water outlet of electrochemical catalytic oxidization reaction tank (3) is connected with the water-in of second equalizing tank (4), and the water outlet of second equalizing tank (4) is as the tail end of electrochemical catalytic oxidization reaction member (20);
Aeration and catalyzing micro cell (1) water-in of the little electrolysis cells of first aeration and catalyzing (10) is connected with water intaking valve (7), aeration and catalyzing micro cell (1) water outlet of the little electrolysis cells of last aeration and catalyzing (10) is connected with electrochemical catalytic oxidization reaction tank (3) water-in of first electrochemical catalytic oxidization reaction member (20), between the little electrolysis cells of aeration and catalyzing (10), between little electrolysis cells of aeration and catalyzing (10) and the electrochemical catalytic oxidization reaction member (20), and be provided with acid proof pump (8) between the electrochemical catalytic oxidization reaction member (20).
8, the wastewater treatment equipment that contains dimethyl formamide, dimethyl formamide according to claim 7 is characterized in that the little electrolysis cells of aeration and catalyzing (10) is two.
9, the wastewater treatment equipment that contains dimethyl formamide, dimethyl formamide according to claim 7 is characterized in that electrochemical catalytic oxidization reaction member (20) is two.
10,, it is characterized in that described power supply (6) is a constant current regulated power supply according to claim 7 or the 8 or 9 described wastewater treatment equipments that contain dimethyl formamide, dimethyl formamide.
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| CNA2009100395645A CN101555080A (en) | 2009-05-12 | 2009-05-12 | Treatment method for waste water containing dimethyl formamide and treatment device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792221A (en) * | 2010-04-09 | 2010-08-04 | 安徽南风环境工程技术有限公司 | Method for pre-treating N,N-dimethylformamide-containing waste water |
| CN103482816A (en) * | 2013-08-22 | 2014-01-01 | 苏州苏净环保工程有限公司 | Denitrification treatment method and treatment system for wastewater containing DMF (N,N-dimethylformamide) and DMAC (dimethyl acetylamide) |
| CN104261495A (en) * | 2014-10-16 | 2015-01-07 | 武汉科梦环境工程有限公司 | Pretreatment method of wastewater containing low-concentration DMF (N, N-dimethyl formamide) |
| CN104276696A (en) * | 2014-10-16 | 2015-01-14 | 南京国能环保工程有限公司 | Pretreatment method of high-concentration organic wastewater containing DMAC (dimethylacetamide) |
| CN105936571A (en) * | 2016-07-15 | 2016-09-14 | 青岛科技大学 | Method for processing polyurethane (PU) synthetic leather wastewater |
| CN107055893A (en) * | 2017-04-28 | 2017-08-18 | 浙江奇彩环境科技股份有限公司 | A kind of method of the processing waste water of DMF containing low concentration |
| CN107555683A (en) * | 2017-10-20 | 2018-01-09 | 苏州淡林环境科技有限公司 | A kind of high concentrated organic wastewater pretreatment unit containing DMAC |
| CN107954569A (en) * | 2017-11-20 | 2018-04-24 | 浙江东洋环境工程有限公司 | A kind of UF film waste water treatment process and its cyclic processing device |
| CN108178431A (en) * | 2017-12-27 | 2018-06-19 | 杭州司迈特水处理工程有限公司 | A kind of processing system and processing method for preparing ultrafiltration membrane filature wastewater |
| CN108793553A (en) * | 2018-06-09 | 2018-11-13 | 石家庄市绿丰化工有限公司 | A kind of method of DMF Sewage treatments |
| RU2789624C1 (en) * | 2022-10-20 | 2023-02-06 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | Dimethylformamide wastewater treatment method |
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2009
- 2009-05-12 CN CNA2009100395645A patent/CN101555080A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792221A (en) * | 2010-04-09 | 2010-08-04 | 安徽南风环境工程技术有限公司 | Method for pre-treating N,N-dimethylformamide-containing waste water |
| CN101792221B (en) * | 2010-04-09 | 2011-07-20 | 安徽南风环境工程技术有限公司 | Method for pre-treating N,N-dimethylformamide-containing waste water |
| CN103482816A (en) * | 2013-08-22 | 2014-01-01 | 苏州苏净环保工程有限公司 | Denitrification treatment method and treatment system for wastewater containing DMF (N,N-dimethylformamide) and DMAC (dimethyl acetylamide) |
| CN103482816B (en) * | 2013-08-22 | 2014-12-10 | 苏州苏净环保工程有限公司 | Denitrification treatment method and treatment system for wastewater containing DMF (N,N-dimethylformamide) and DMAC (dimethyl acetylamide) |
| CN104261495A (en) * | 2014-10-16 | 2015-01-07 | 武汉科梦环境工程有限公司 | Pretreatment method of wastewater containing low-concentration DMF (N, N-dimethyl formamide) |
| CN104276696A (en) * | 2014-10-16 | 2015-01-14 | 南京国能环保工程有限公司 | Pretreatment method of high-concentration organic wastewater containing DMAC (dimethylacetamide) |
| CN105936571A (en) * | 2016-07-15 | 2016-09-14 | 青岛科技大学 | Method for processing polyurethane (PU) synthetic leather wastewater |
| CN107055893A (en) * | 2017-04-28 | 2017-08-18 | 浙江奇彩环境科技股份有限公司 | A kind of method of the processing waste water of DMF containing low concentration |
| CN107555683A (en) * | 2017-10-20 | 2018-01-09 | 苏州淡林环境科技有限公司 | A kind of high concentrated organic wastewater pretreatment unit containing DMAC |
| CN107954569A (en) * | 2017-11-20 | 2018-04-24 | 浙江东洋环境工程有限公司 | A kind of UF film waste water treatment process and its cyclic processing device |
| CN107954569B (en) * | 2017-11-20 | 2020-03-20 | 浙江东洋环境工程有限公司 | UF membrane wastewater treatment process and circulating treatment device thereof |
| CN108178431A (en) * | 2017-12-27 | 2018-06-19 | 杭州司迈特水处理工程有限公司 | A kind of processing system and processing method for preparing ultrafiltration membrane filature wastewater |
| CN108793553A (en) * | 2018-06-09 | 2018-11-13 | 石家庄市绿丰化工有限公司 | A kind of method of DMF Sewage treatments |
| RU2789624C1 (en) * | 2022-10-20 | 2023-02-06 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский химико-технологический университет имени Д.И. Менделеева" (РХТУ им. Д.И. Менделеева) | Dimethylformamide wastewater treatment method |
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