CN203487004U - Treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide) - Google Patents
Treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide) Download PDFInfo
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- CN203487004U CN203487004U CN201320514015.0U CN201320514015U CN203487004U CN 203487004 U CN203487004 U CN 203487004U CN 201320514015 U CN201320514015 U CN 201320514015U CN 203487004 U CN203487004 U CN 203487004U
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Abstract
The utility model relates to a treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide). The treatment system comprises a buffer pool for collecting high-concentration wastewater, a pretreatment device for pretreating the high-concentration wastewater, a chemical feeding device, an adjusting pool, an anaerobic ammoniation pool, a biological selection pool, a biological denitrification device, a sludge pool, a recycled water device and an industrial water collecting well. As the components, namely, the buffer pool, the pretreatment device, the chemical feeding device, the adjusting pool, the anaerobic ammoniation pool, the biologic selection pool, the biological denitrification device and the like, are connected together in a certain mode, the treatment system is capable of performing denitrification treatment on the DMF and the DMAC in the wastewater, and is beneficial to environment protection; the treatment system is simple in structure and applicable to large-scale popularization and application.
Description
Technical field
The utility model relates to a kind of Waste Water Treatment, relates to particularly a kind for the treatment of system containing DMF and DMAC waste water.
Background technology
Along with the development and progress of chemical industry, people are more and more deep in the exploration of chemical field.Be accompanied by the synthetic of various new chemical materialss, the trade effluent of various high densitys also produces thereupon.If the unprocessed rivers,lakes and seas that directly enter of these waste water, can cause serious environmental pollution and ecological damage, to mankind itself's health, also can form serious threat.DMF (DMF), N,N-dimethylacetamide (DMAC), as important industrial chemicals and the solvent of excellent property, are mainly used in the industries such as urethane, chemical fibre, medicine, agricultural chemicals, dyestuff, electronics.Because the boiling point of DMF, DMAC is very high, be respectively 153 ℃ and 166 ℃, and can be miscible with arbitrary proportion with water, therefore the removal containing organonitrogen in DMF, DMAC waste water is one of Focal point and difficult point of water treatment field research always.
For this type of wastewater processing technology, the tertiary treatment mode that general employing two step anaerobes reactions and a step aerobic reaction are in series at present.Two isometric anaerobic treatment units in series form anaerobe reactive system, and aerobic treatment unit is separately converted to carbonic acid gas, water and nitric nitrogen by the organism in sewage and ammonia-state nitrogen.But from this technique on the whole, its nitric efficiency is general, and this technique is all higher in floor space and energy consumption, and construction scale and expense are also higher, have in actual applications certain limitation.
In addition, what enterprise discharged is usually divided into two strands containing DMF, DMAC waste water, and one is that wherein the content of DMF, DMAC is very high from the hc effluent of the outflows such as rectifying tower; Another strand is through general technology, such as condensation process, and the common waste water of outflow, wherein the content of DMF, DMAC is lower.If processed together after at the beginning will these two strands of waste water mixing, certainly will cause denitrification effect poor, increase processing cost, thereby necessary they are treated with a certain discrimination.
Summary of the invention
The utility model object is that a kind for the treatment of system that can carry out effective denitrogenation to the DMF in waste water and DMAC is provided in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution adopted in the utility model is: a kind for the treatment of system containing DMF and DMAC waste water, it comprises for collecting the Buffer Pool of hc effluent, be used for the pretreated pretreatment unit of hc effluent, chemicals dosing plant, equalizing tank, anaerobism ammonification pond, bioselection pond, biological denitrification apparatus, sludge sump, reuse water device, industry pump well, wherein said biological denitrification apparatus comprises the denitrification pond that circulation connects, nitrification tank, settling tank, described Buffer Pool, pretreatment unit, equalizing tank, anaerobism ammonification pond, bioselection pond, biological denitrification apparatus, reuse water device connects successively, described chemicals dosing plant respectively with pretreatment unit, sludge sump, biological denitrification apparatus, reuse water device is connected, described sludge sump respectively with pretreatment unit, settling tank is connected, described equalizing tank also respectively with industrial pump well, denitrification pond is connected, circulate and be connected mutually with bioselection pond in described anaerobism ammonification pond.
Optimally, described reuse water device comprises intermediate pool, valveless filtering pool, activated charcoal filter, the reuse pool connecting successively.
Further, described chemicals dosing plant comprises separate acid solution accommodation section, degradation agents accommodation section, coagulating agent accommodation section, flocculation agent accommodation section, nutrition accommodation section, alkali lye accommodation section, chlorine dioxide generator, wherein said acid solution accommodation section, degradation agents accommodation section are connected with pretreatment unit, described coagulating agent accommodation section, flocculation agent accommodation section are connected with sludge sump, described nutrition accommodation section is connected with denitrification pond, described alkali lye accommodation section is connected with nitrification tank, and described chlorine dioxide generator is connected with reuse pool.
Optimally, between described equalizing tank and industrial pump well, be connected with cooling tower.
Optimally, in described biological denitrification apparatus, be also provided with denitrification pond and the nitrification tank that 1 ~ 3 group of circulation connects.
Because technique scheme is used, the utility model compared with prior art has following advantages: the utility model is containing the treatment system of DMF and DMAC waste water, by the equipment connections such as Buffer Pool, pretreatment unit, chemicals dosing plant, equalizing tank, anaerobism ammonification pond, bioselection pond, biological denitrification apparatus are got up, the DMF, the DMAC that can be used in containing in waste water carry out denitrogenation processing, are conducive to protection of the environment; And simple in structure, be applicable to large-scale promotion and use.
Accompanying drawing explanation
Accompanying drawing 1 is the treatment system connection diagram of the utility model containing DMF and DMAC waste water;
Accompanying drawing 2 is the biological denitrification apparatus connection diagram of the utility model containing the treatment system of DMF and DMAC waste water;
Accompanying drawing 3 is the reuse water device connection diagram of the utility model containing the treatment system of DMF and DMAC waste water;
Accompanying drawing 4 is the chemicals dosing plant connection diagram of the utility model containing the treatment system of DMF and DMAC waste water;
Wherein: 1, Buffer Pool; 2, pretreatment unit; 3, chemicals dosing plant; 31, acid solution accommodation section; 32, degradation agents accommodation section; 33, coagulating agent accommodation section; 34, flocculation agent accommodation section; 35, nutrition accommodation section; 36, alkali lye accommodation section; 37, chlorine dioxide generator; 4, equalizing tank; 5, anaerobism ammonification pond; 6, bioselection pond; 7, biological denitrification apparatus; 71, denitrification pond; 72, nitrification tank; 75, settling tank; 8, sludge sump; 9, reuse water device; 91, intermediate pool; 92, valveless filtering pool; 93, activated charcoal filter; 94, reuse pool; 10, cooling tower; 11, industrial pump well.
Embodiment
Below in conjunction with accompanying drawing, the utility model preferred embodiment is elaborated:
The treatment system containing DMF and DMAC waste water as shown in Figure 1-2, mainly comprises Buffer Pool 1, pretreatment unit 2, chemicals dosing plant 3, equalizing tank 4, anaerobism ammonification pond 5, bioselection pond 6, biological denitrification apparatus 7, sludge sump 8, reuse water device 9, industrial pump well 11.
Wherein, Buffer Pool 1, pretreatment unit 2, equalizing tank 4, anaerobism ammonification pond 5, bioselection pond 6, biological denitrification apparatus 7, reuse water device 9 connect successively, and Buffer Pool 1 is for collecting hc effluent, and pretreatment unit 2 is for carrying out pre-treatment to hc effluent; Chemicals dosing plant 3 is connected with pretreatment unit 2, sludge sump 8, biological denitrification apparatus 7, reuse water device 9 respectively, for adding respectively corresponding chemical reagent to these equipment; Sludge sump 8 is connected with pretreatment unit 2, settling tank 75 respectively, collects the precipitation and the mud that produce; Equalizing tank 4 is also connected with industrial pump well 11, denitrification pond 71 respectively, on the one hand to lead-in portion composite waste in denitrification pond 71 as carbon source, the common waste water receiving on the other hand in industrial pump well 11 forms mixing solutions; Circulating and be connected mutually with bioselection pond 6 in anaerobism ammonification pond 5, makes the sludge reflux producing in bioselection pond 6 to anaerobism ammonification pond 5, fully carries out anaerobism aminating reaction; Biological denitrification apparatus 7 comprises denitrification pond 71, nitrification tank 72, the settling tank 75 that circulation connects, and to realize, waste water is carried out to abundant denitrogenation processing.
In the present embodiment, as shown in Figure 3-4, chemicals dosing plant 3 comprises separate acid solution accommodation section 31, degradation agents accommodation section 32, coagulating agent accommodation section 33, flocculation agent accommodation section 34, nutrition accommodation section 35, alkali lye accommodation section 36, chlorine dioxide generator 37, wherein acid solution accommodation section 31, degradation agents accommodation section 32 is connected with pretreatment unit 2, coagulating agent accommodation section 33, flocculation agent accommodation section 34 is connected with sludge sump 8, nutrition accommodation section 35 is connected with denitrification pond 71, alkali lye accommodation section 36 is connected with nitrification tank 72, chlorine dioxide generator 37 is connected with reuse pool 94, so just can in corresponding equipment, add chemical reagent, and do not interfere with each other.Reuse water device 9 comprises intermediate pool 91, valveless filtering pool 92, activated charcoal filter 93, the reuse pool 94 connecting successively, can further improve the water quality of processing postindustrial waste water, reaches the object of recycling, water saving, protection of the environment.Between equalizing tank 4 and industrial pump well 11, be connected with cooling tower 10, the common waste water of collecting for refrigerating industry pump well 11; In biological denitrification apparatus 7, be also provided with denitrification pond and nitrification tank that 1 group of circulation connects, with balance equipment cost and nitric efficiency.
Above-mentioned to the utility model, the structure containing the treatment system of DMF and DMAC waste water is illustrated, and its principle of work is done to brief description below:
Owing to being divided into two strands containing DMF, DMAC waste water: one is discharged by rectifying tower, DMF wherein, DMAC content are higher, i.e. hc effluent; One is by discharges such as condenser, equipment washing, and DMF wherein, DMAC content are lower, i.e. common waste water.The annexation containing DMF and DMAC Waste Water Treatment according to as shown in Figure 1, is first collected in hc effluent, common waste water respectively in Buffer Pool 1, industrial pump well 11.Because DMF in hc effluent, DMAC content are higher, need to carry out pre-treatment to it, thereby imported in pretreatment unit 2 by water pump, control chemicals dosing plant 3 input sulphuric acid solns and DMF, DMAC degradation agents, react 20-90 minute with most of DMF, DMAC in degrading waste water, solid scum silica frost imports in settling tank 8, and the elementary supernatant liquor of generation flows into equalizing tank 4 from pond body water port.In order to ensure fully reacting with DMF, DMAC in waste water, cost-saving, DMF, DMAC trapping agent molar weight are optimized for 1:5 ~ 10 with the ratio of DMF, DMAC integral molar quantity, and the molar weight of sulfuric acid is optimized for 1:50 ~ 100 with the ratio of DMF, DMAC integral molar quantity; After common waste water of while is cooling by cooling tower 10, mix in equalizing tank 4 with the water outlet in pretreatment unit 2.
Composite waste small part in equalizing tank 4 imports biological denitrification system 7 and absorbs for denitrifying bacterium as part carbon source, other importing anaerobism ammonification pond 5, under the effect of Ammonifying bacteria, carry out anaerobism aminating reaction 15 hours, nitrogen in DMF, DMAC is converted to ammonia nitrogen, water outlet flows in bioselection pond 6, the sludge reflux producing is to anaerobism ammonification pond 5, and the secondary supernatant after three phase separation imports biological denitrification system 7.This supernatant liquor in denitrification system 7 successively overflow by denitrification pond 71, nitrification tank 72, settling tank 75, make ammonia nitrogen through nitration reaction, anti-nitration reaction, finally be converted into nitrogen in the effect of denitrifying bacterium, nitrobacteria, wherein in nitrification tank 72, add appropriate alkali lye to adjust pH to 6-7, to be applicable to the growth of nitrobacteria, in denitrification pond 71, add appropriate methyl alcohol or glucose, to meet the consumption requirements of denitrifying bacterium, nitrification tank 72 and settling tank 75 water parts are back to denitrification pond 71 to improve nitric efficiency, as shown in Figure 2.Denitrification pond and nitrification tank that 1 ~ 3 group of circulation connection also can be set again improve nitric efficiency.
The mud forming in settling tank 75 enters sludge sump 8, and three grades of supernatant liquor overflows of formation import reuse water device 9, successively through intermediate pool 91, valveless filtering pool 92, enters reuse pool 94, as shown in Figure 3 after activated charcoal filter 93 filters.In reuse pool 94, add the thimerosal producing in chlorine dioxide generator 37, the water in reuse pool 94 is carried out recycling or arranging outward after sterilization.In sludge sump 8, add coagulant polymeric aluminium chloride, flocculation agent cationic polyacrylamide PAM, wherein PAC concentration optimization is that 50 ~ 100ppm, PAM concentration optimization are 1 ~ 10ppm, make sludge settling wherein to bottom, after centrifugation, produce solid waste, committee is outer to process, and has reduced to greatest extent the pollution to environment.
Various added chemical substances are all contained in chemicals dosing plant 3, difference corresponding acid solution accommodation section 31, degradation agents accommodation section 32, coagulating agent accommodation section 33, flocculation agent accommodation section 34, nutrition accommodation section 35, alkali lye accommodation section 36, chlorine dioxide generator 37, as shown in Figure 4, chemicals dosing plant 3 compact constructions that arrange like this, floor space is little, can improve level of automation.Wherein acid solution accommodation section 31, degradation agents accommodation section 32 are connected with pretreatment unit 2, for adding sulphuric acid soln, degradation agents to remove DMF, DMAC; Coagulating agent accommodation section 33, flocculation agent accommodation section 34 are connected with sludge sump 8, for adding PAC, PAM, and coagulating sedimentation mud wherein; Nutrition accommodation section 35 is connected with denitrification pond 71, for adding methyl alcohol, glucose, to denitrifying bacterium, provides energy; Alkali lye accommodation section 36 is connected with nitrification tank 72, for regulating the pH value of nitrification tank, is applicable to the existence of nitrobacteria; Chlorine dioxide generator 37 is connected with reuse pool 94, for adding thimerosal to reuse pool 94.
Water quality before and after the utility model is processed containing the treatment system of DMF and DMAC waste water is as follows:
COD wherein
crorganic substance relative content in the water that expression employing potassium dichromate standard method calculates, NH
3-N represents ammonia-nitrogen content, and T-N represents total nitrogen content, and SS represents solid suspension content.As seen from the above table, after adopting aforesaid method and system to process waste water, the denitrification percent of waste water is more than 95%, and the clearance of COD is more than 99%, and suspended solid clearance, more than 95%, has reached the standard of discharge of wastewater or recycling.
Above-described embodiment is only explanation technical conceive of the present utility model and feature; its object is to allow person skilled in the art can understand content of the present utility model and implement according to this; can not limit protection domain of the present utility model with this; all equivalences of doing according to the utility model spirit change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. containing a treatment system for DMF and DMAC waste water, it is characterized in that: it comprises the Buffer Pool (1) for collecting hc effluent, be used for the pretreated pretreatment unit of hc effluent (2), chemicals dosing plant (3), equalizing tank (4), anaerobism ammonification pond (5), bioselection pond (6), biological denitrification apparatus (7), sludge sump (8), reuse water device (9), industry pump well (11), wherein said biological denitrification apparatus (7) comprises the denitrification pond (71) that circulation connects, nitrification tank (72), settling tank (75), described Buffer Pool (1), pretreatment unit (2), equalizing tank (4), anaerobism ammonification pond (5), bioselection pond (6), biological denitrification apparatus (7), reuse water device (9) connects successively, described chemicals dosing plant (3) respectively with pretreatment unit (2), sludge sump (8), biological denitrification apparatus (7), reuse water device (9) is connected, described sludge sump (8) respectively with pretreatment unit (2), settling tank (75) is connected, described equalizing tank (4) also respectively with industrial pump well (11), denitrification pond (71) is connected, and circulates and be connected mutually with bioselection pond (6) in described anaerobism ammonification pond (5).
2. the treatment system containing DMF and DMAC waste water according to claim 1, is characterized in that: described reuse water device (9) comprises intermediate pool (91), valveless filtering pool (92), activated charcoal filter (93), the reuse pool (94) connecting successively.
3. the treatment system containing DMF and DMAC waste water according to claim 2, it is characterized in that: described chemicals dosing plant (3) comprises separate acid solution accommodation section (31), degradation agents accommodation section (32), coagulating agent accommodation section (33), flocculation agent accommodation section (34), nutrition accommodation section (35), alkali lye accommodation section (36), chlorine dioxide generator (37), wherein said acid solution accommodation section (31), degradation agents accommodation section (32) is connected with pretreatment unit (2), described coagulating agent accommodation section (33), flocculation agent accommodation section (34) is connected with sludge sump (8), described nutrition accommodation section (35) is connected with denitrification pond (71), described alkali lye accommodation section (36) is connected with nitrification tank (72), described chlorine dioxide generator (37) is connected with reuse pool (94).
4. the treatment system containing DMF and DMAC waste water according to claim 1, is characterized in that: between described equalizing tank (4) and industrial pump well (11), be connected with cooling tower (10).
5. the treatment system containing DMF and DMAC waste water according to claim 1, is characterized in that: in described biological denitrification apparatus (7), be also provided with denitrification pond and nitrification tank that 1 ~ 3 group of circulation connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514015.0U CN203487004U (en) | 2013-08-22 | 2013-08-22 | Treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514015.0U CN203487004U (en) | 2013-08-22 | 2013-08-22 | Treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide) |
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| CN203487004U true CN203487004U (en) | 2014-03-19 |
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| CN201320514015.0U Withdrawn - After Issue CN203487004U (en) | 2013-08-22 | 2013-08-22 | Treatment system of wastewater with DMF (Dimethyl Formamide) and DMAC (Dimethylacetamide) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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) |
| CN107601784A (en) * | 2017-11-01 | 2018-01-19 | 苏州依斯倍环保装备科技有限公司 | A kind of Waste Water Treatment and method |
| CN110627314A (en) * | 2019-08-29 | 2019-12-31 | 浙江嘉名染整有限公司 | Method for efficiently removing total nitrogen in printing and dyeing wastewater by multi-process combination |
-
2013
- 2013-08-22 CN CN201320514015.0U patent/CN203487004U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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) |
| CN107601784A (en) * | 2017-11-01 | 2018-01-19 | 苏州依斯倍环保装备科技有限公司 | A kind of Waste Water Treatment and method |
| CN110627314A (en) * | 2019-08-29 | 2019-12-31 | 浙江嘉名染整有限公司 | Method for efficiently removing total nitrogen in printing and dyeing wastewater by multi-process combination |
| CN110627314B (en) * | 2019-08-29 | 2022-09-23 | 浙江嘉名染整有限公司 | Method for efficiently removing total nitrogen in printing and dyeing wastewater by multi-process combination |
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