CN204874130U - Comprehensive pretreatment systems of carbide chloroprene rubber waste water, sulfanilamide (SN) waste water and chlor -alkali waste water - Google Patents
Comprehensive pretreatment systems of carbide chloroprene rubber waste water, sulfanilamide (SN) waste water and chlor -alkali waste water Download PDFInfo
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- CN204874130U CN204874130U CN201520576513.7U CN201520576513U CN204874130U CN 204874130 U CN204874130 U CN 204874130U CN 201520576513 U CN201520576513 U CN 201520576513U CN 204874130 U CN204874130 U CN 204874130U
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Abstract
The utility model discloses a comprehensive pretreatment systems of carbide chloroprene rubber waste water, sulfanilamide (SN) waste water and chlor -alkali waste water, the ammonia control pond is blown through ammonia pump and ammonia and is taken off the tower and link to each other, and ammonia blows the delivery port that takes off the tower and the equalizing basin that exposes to the sun in advance links to each other, chloroprene rubber waste water gets into the equalizing basin that exposes to the sun in advance through grid well - slag settling tank - oil interceptor, the mixed reaction pond is gone into through first acidic water pump to the acid waste water equalizing basin, goes into catalytic oxidation pool through second acidic water pump, the alkaline waste water equalizing basin passes through buck pump and mixed reaction pond and links to each other, and the mixed reaction pond links to each other with the sedimentation tank in with links to each other with the sedimentation tank and the equalizing basin that exposes to the sun in advance in, carbide supernatant collecting pit links to each other with catalytic oxidation pool, and catalytic oxidation pool's delivery port links to each other with the desulfurization sedimentation tank, and the delivery port of desulfurization sedimentation tank and the equalizing basin that exposes to the sun in advance link to each other. Combine several kinds of waste water to handle, save the cost, through reasonable in design's preliminary treatment method respectively, improve their biodegradability, finally can both realize biochemical treatment, discharge to reach standard.
Description
Technical field
The utility model relates to a kind of method of wastewater treatment, particularly the comprehensive pretreatment system of a kind of calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater.
Background technology
Chloroprene rubber is polymerized by chloroprene the synthetic rubber made, and has the over-all properties that oil resistant, resistance to combustion, resistance to oxidation and resistance to ozone etc. are good, obtains widespread use.The production method of current domestic chloroprene rubber mainly contains carbide acetylene method and butadiene process, and carbide acetylene method is extensively adopted because of its less investment.This production system factory effluent is mainly from washing glue and producing the waste water produced in vinylacetylene and chloroprene process, containing a large amount of organic substances being difficult to degrade, as benzene homologues, dispersion agent, milk coagulant etc., in waste water, COD is high, a kind of seriously polluted, the great trade effluent of intractability.
In addition, adopt calcium carbide route production chloroprene rubber also can produce a large amount of carbide slag slurries and need process.Traditional wastewater from acetylene slag process is natural sedimentation method, wastewater from acetylene slag is entered settling tank or low lowland, with manpower or forklift entrucking outward transport after slag slurry precipitation concentration, clear liquor is directly outer after adding acid neutralization to be arranged, sulfide concentration in carbide slag clear liquor is higher, its S
2-up to 600-750mg/L.To pollute surrounding environment.
In sulfanilamide (SN) production process, production link is complicated, and the by product of generation is more, and waste component is more complicated.The a large amount of acid waste water of main generation and weak ammonia in sulfanilamide (SN) production process, acid waste water mainly contains chlorsulfonic acid wash water, two points of vacuum water, untreated two points of water and secondary mother liquids.
Its CODcr concentration of sulfanilamide (SN) subsidiary factory secondary mother liquid is up to 80000-90000mg/L, and this mother liquor is chlorinated sodium completely, sulfanilamide (SN), sodium-acetate are saturated, and containing other by product produced in sulfanilamide (SN) production process.
The untreated two points of waste water of sulfanilamide (SN) subsidiary factory, in sulfanilamide (SN) production process, be separated that chlorsulfonic acids a large amount of in sulfonated liquid (its effective constituent be to sulfamic acid chloride) produces contain about 30% sulfuric acid, there are untreated two points of waste water.Meanwhile, containing organism such as the Sulphanilic Acid produced sulfamic acid chloride and side reaction, its COD is 8000 ~ 15000mg/L.
Waste water washed by chlorsulfonic acid is the waste water that in chlorsulfonic acid production process, vent gas treatment produces, and its main component is hydrochloric acid, sulfurous acid, sulfuric acid, and its pH value is 0.5 ~ 1, COD is 800 ~ 1500mg/L.
Sulfanilamide (SN) subsidiary factory weak ammonia ammonia nitrogen concentration is higher, its NH
3-N is up to 5000mg/L.
Produce again a large amount of alkaline waste waters in chlor-alkali production process, pH reaches 12, under the abnormal condition of production, also can produce a large amount of sour waters.If above waste water individual curing, there is the defect that cost is high in each construction treatment system.
Utility model content
For existing problem, the purpose of this utility model is the comprehensive pretreatment system providing a kind of calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater, and can ensure engineering construction, cost is low.
To achieve these goals, the technical solution of the utility model is: the comprehensive pretreatment system of a kind of calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater, is characterized in that: comprise acid waste water equalizing tank, alkaline waste water equalizing tank, calcium carbide supernatant collection pond, ammoniacal liquor equalizing tank and meat food processing pond;
Described ammoniacal liquor equalizing tank is connected with Ammonia blowing-out tower by aqua ammonia pump, and the water outlet of described Ammonia blowing-out tower is connected with meat food processing pond;
Described neoprene wastewater enters detritus pool through grille well, and the water outlet of described detritus pool is connected with oil trap, and described oil trap is connected with meat food processing pond;
The water outlet of described acid waste water equalizing tank connects the first sour water pump and the second sour water pump, wherein the first sour water pump is connected with mixed reaction pond, and the second sour water pump is connected with catalyzed oxidation pond;
The water outlet of described alkaline waste water equalizing tank is connected with mixed reaction pond by buck pump, and the outlet of described mixed reaction pond is connected with neutralization precipitation pond, and the water outlet in described neutralization precipitation pond is connected with meat food processing pond;
The water outlet in described calcium carbide supernatant collection pond is connected with catalyzed oxidation pond, is provided with aerating apparatus in described catalyzed oxidation pond, and the water outlet in described catalyzed oxidation pond is connected with desulfurization settling tank, and the water outlet of described desulfurization settling tank is connected with meat food processing pond.
In such scheme: also comprise chemical sludge pond, the mud of described desulfurization settling tank enters chemical sludge pond, and the mud in chemical sludge pond enters sludge thickener, then pumps into the first pressure filter by the first sludge pump and carries out press filtration.
In in such scheme: the mud in described neutralization precipitation pond pumps into the second pressure filter by the second sludge pump and carries out press filtration.
The present invention, according to the feature of sulfanilamide (SN) factory effluent chlor-alkali production waste water and calcium carbide route Neoprene Wastewater, combines them and handles together.Only need to build a biochemical wastewater treatment system.Cost-saving.But before entering biochemical treatment system, need to carry out pre-treatment to each waste water.Because the utility model design pretreatment system, by pre-treatment, improves the biodegradability of various waste water.
First, carbide slag slurry supernatant medium sulphide content concentration, up to 750mg/L, need significantly reduce its content, cuts down it to after biochemical system impact, just can enter aftertreatment systems.The design adopts catalytic oxidation desulfurization.Calcium carbide supernatant liquor flows into catalyzed oxidation pond, aeration in catalyzed oxidation pond, in catalyzed oxidation pond, acid waste water in introducing portion acid waste water equalizing tank, make pH (7-8) under slight alkalinity, and add catalyst sulfuric acid manganese, utilize the oxygen in air, oxidation-reduction quality pollution substance is as S
2-, become catalyzed oxidation, reaction formula is as follows:
H
2S+O
2＝S↓+H
2O
S
2-+2O
2＝SO
4 2-
Then enter desulfurization settling tank to precipitate, the clearance of sulfide can reach more than 95%.
Sulfanilamide (SN) factory effluent produce sour water and the abnormal production process of chlor-alkali in sour water enter acid waste water equalizing tank, chlor-alkali production waste water enters alkalescence adjustment pond, enter mixed reaction pond and carry out acid-base neutralisation, then enter neutralization precipitation pond, remove the mud (major part is gypsum) produced in acid-base neutralisation process.
Neoprene wastewater, through grid-precipitation-oil removal, removes the slag thing in waste water and oily substance.
In weak ammonia, ammonia nitrogen concentration content is high, be directly brought into biochemical treatment system, by the removal ability making the ammonia nitrogen mean concns of former water exceed biochemical treatment system, produce water outlet ammonia nitrogen to exceed standard, the utility model enters biochemical system after adopting stripping to remove ammonia nitrogen, when stripping, regulates the pH of waste water more than 11, water temperature 25 DEG C, needs steam heating lower than after this temperature.After stripping, clearance can reach 60-70%.Ensure the treatment effect of biochemical system.
Each stock waste water according to its water quality characteristics respectively after pretreatment, enters preaeration equalizing tank, mixes each stock waste water, mean concns is reduced.
The beneficial effects of the utility model are: the utility model is according to the feature of sulfanilamide (SN) factory effluent, chlor-alkali production waste water and calcium carbide route Neoprene Wastewater, this several waste water is combined process, save cost, by pretreatment process reasonable in design respectively, improve their biodegradability, finally can realize biochemical treatment, qualified discharge, technical process is simple, and construction cost is low, and equipment working cost is low.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Embodiment 1
The comprehensive pretreatment system of calcium carbide route neoprene wastewater of the present utility model, waste water containing sulfanilamide and chloro alcali wastewater, comprise, acid waste water equalizing tank 2, alkaline waste water equalizing tank 3, calcium carbide supernatant collection pond 4, ammoniacal liquor equalizing tank 5 and meat food processing pond 6.
Weak ammonia is to ammoniacal liquor equalizing tank 5, and ammoniacal liquor equalizing tank 5 is connected with Ammonia blowing-out tower 8 by aqua ammonia pump 7, and the water outlet of described Ammonia blowing-out tower 8 is connected with meat food processing pond 6.
Neoprene wastewater enters detritus pool 10 through grille well 9, and the water outlet of described detritus pool 10 is connected with oil trap 11, and oil trap 11 is connected with meat food processing pond 6.
The water outlet of acid waste water equalizing tank 2 connects the first sour water pump 12 and the second sour water pump 13, wherein the first sour water pump 12 is connected with mixed reaction pond 14, and the second sour water pump 13 is connected with catalyzed oxidation pond 15.
The water outlet of alkaline waste water equalizing tank 3 is connected with mixed reaction pond 14 by buck pump 16, and the outlet of described mixed reaction pond 14 is connected with neutralization precipitation pond 17, and the water outlet in described neutralization precipitation pond 17 is connected with meat food processing pond 6.
The water outlet in calcium carbide supernatant collection pond 4 is connected with catalyzed oxidation pond 15, aerating apparatus is provided with in described catalyzed oxidation pond 15, the water outlet in described catalyzed oxidation pond 15 is connected with desulfurization settling tank 18, and the water outlet of described desulfurization settling tank 18 is connected with meat food processing pond 6.
The mud of desulfurization settling tank 18 enters chemical sludge pond 19, and the mud in chemical sludge pond 19 enters sludge thickener 20, then pumps into the first pressure filter 22 by the first sludge pump 21 and carries out press filtration and obtain mud cake, mud cake as ready.
The mud in neutralization precipitation pond 17 pumps into the second pressure filter 1 by the second sludge pump 23 to carry out press filtration and obtains body refuse, as ready.
The comprehensive wastewater in meat food processing pond, through adding milk of lime precipitated copper ion, aeration agitation, then enters air supporting precipitation all-in-one by lift pump, removes cupric ion and suspended matter, then enter PACT aerobic reaction pond.Waste water is under aerobic condition, by adding Powdered Activated Carbon, absorption and biological degradation are carried out simultaneously, indissoluble thing is converted into solvend, be the easy degradation material of small molecules by polymer hard-degraded substance (as amine, heterogeneous ring compound etc.) chain rupture, realize biological degradation, thus reduce the organic pollutant in waste water.
The pond water outlet of PACT aerobic reaction, from flowing into second pond, after realizing mud-water separation, enters biological contact oxidation pond.
Waste water is from flowing to biological contact oxidation pond, and in contact-oxidation pool, be equiped with biologic packing material, pond base fabric gas oxygenation, aerobic biologic membrane cultivated by filler, utilizes the vital movement of microorganism in microbial film to carry out the organic pollutant in oxygenolysis waste water.Contact-oxidation pool water outlet enters final deposition pool, and with the aging microbial film chip come off of precipitate and separate, final deposition pool water outlet enters biological activated carbon pond.
Waste water enters biological activated carbon pond (also claiming BAC tower), utilize the absorption of gac and the catabolism effect of microorganism, to remove the COD of remaining bio-refractory and colourity etc., waste water is purified, the water outlet of charcoal pond enters rapid filter, after mud-water separation, enter clean water basin, standard water discharge is discharged.
The utility model is not limited to above-described embodiment, should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (3)
1. a comprehensive pretreatment system for calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater, is characterized in that: comprise acid waste water equalizing tank, alkaline waste water equalizing tank, calcium carbide supernatant collection pond, ammoniacal liquor equalizing tank and meat food processing pond;
Described ammoniacal liquor equalizing tank is connected with Ammonia blowing-out tower by aqua ammonia pump, and the water outlet of described Ammonia blowing-out tower is connected with meat food processing pond;
Described neoprene wastewater enters detritus pool through grille well, and the water outlet of described detritus pool is connected with oil trap, and described oil trap is connected with meat food processing pond;
The water outlet of described acid waste water equalizing tank connects the first sour water pump and the second sour water pump, wherein the first sour water pump is connected with mixed reaction pond, and the second sour water pump is connected with catalyzed oxidation pond;
The water outlet of described alkaline waste water equalizing tank is connected with mixed reaction pond by buck pump, and the outlet of described mixed reaction pond is connected with neutralization precipitation pond, and the water outlet in described neutralization precipitation pond is connected with meat food processing pond;
The water outlet in described calcium carbide supernatant collection pond is connected with catalyzed oxidation pond, is provided with aerating apparatus in described catalyzed oxidation pond, and the water outlet in described catalyzed oxidation pond is connected with desulfurization settling tank, and the water outlet of described desulfurization settling tank is connected with meat food processing pond.
2. the comprehensive pretreatment system of calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater according to claim 1, it is characterized in that: also comprise chemical sludge pond, the mud of described desulfurization settling tank enters chemical sludge pond, the mud in chemical sludge pond enters sludge thickener, then pumps into the first pressure filter by the first sludge pump and carries out press filtration.
3. the comprehensive pretreatment system of calcium carbide route neoprene wastewater, waste water containing sulfanilamide and chloro alcali wastewater according to claim 2, is characterized in that: the mud in described neutralization precipitation pond pumps into the second pressure filter by the second sludge pump and carries out press filtration.
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|---|---|---|---|
| CN201520576513.7U CN204874130U (en) | 2015-08-04 | 2015-08-04 | Comprehensive pretreatment systems of carbide chloroprene rubber waste water, sulfanilamide (SN) waste water and chlor -alkali waste water |
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|---|---|---|---|
| CN201520576513.7U CN204874130U (en) | 2015-08-04 | 2015-08-04 | Comprehensive pretreatment systems of carbide chloroprene rubber waste water, sulfanilamide (SN) waste water and chlor -alkali waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408955A (en) * | 2018-01-22 | 2018-08-17 | 陈贤瑜 | A kind of processing equipment of sulphur cyanogen waste water |
| CN113149360A (en) * | 2021-04-28 | 2021-07-23 | 安徽金轩科技有限公司 | Three-waste treatment unit of galaxolide production process |
-
2015
- 2015-08-04 CN CN201520576513.7U patent/CN204874130U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408955A (en) * | 2018-01-22 | 2018-08-17 | 陈贤瑜 | A kind of processing equipment of sulphur cyanogen waste water |
| CN113149360A (en) * | 2021-04-28 | 2021-07-23 | 安徽金轩科技有限公司 | Three-waste treatment unit of galaxolide production process |
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