CN103723883A - Treatment method of synthetic rubber production waste water - Google Patents

Treatment method of synthetic rubber production waste water Download PDF

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Publication number
CN103723883A
CN103723883A CN201310572422.1A CN201310572422A CN103723883A CN 103723883 A CN103723883 A CN 103723883A CN 201310572422 A CN201310572422 A CN 201310572422A CN 103723883 A CN103723883 A CN 103723883A
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China
Prior art keywords
sewage
oxidation
treatment
add
synthetic rubber
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CN201310572422.1A
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Chinese (zh)
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段巍
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Anhui Huaihua Co Ltd
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Anhui Huaihua Co Ltd
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Priority to CN201310572422.1A priority Critical patent/CN103723883A/en
Publication of CN103723883A publication Critical patent/CN103723883A/en
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Abstract

The invention discloses a treatment method of synthetic rubber production waste water. The treatment method comprises steps as follows: 1), precipitation; 2), removal of suspended particles and colloidal substances; 3), biological degradation; 4), primary oxidation and 5), secondary oxidation. According to the treatment method, a modified neutral Fenton method is used, the dosage and an optimal drug combination point formed in a catalytic oxidation reactor are controlled, and the minimum dose can be used for realizing an optimal removal effect. Acid and alkali are not used for adjusting the pH, so that the operation cost is reduced greatly, the operation is simpler and more convenient, and the operation effect is more excellent.

Description

A kind for the treatment of process of synthetic rubber production waste
Technical field
The invention belongs to chemical engineering sewage process field, relate to a kind for the treatment of process of synthetic rubber production waste.
Background technology
Along with the sustainable growth of domestic market synthetic rubber demand, the built many cover rubber production devices of China.Because rubber quantity of wastewater effluent is large, organic pollutant content is high, generally need supporting independently Sewage treatment systems.Because adding multiple auxiliary chemicals in rubber production technology, in polyreaction, produce again a large amount of different molecular weight low-grade polymers simultaneously, these chemical pollutants belong to bio-refractory material mostly, cause rubber sewage disposal difficulty up to standard large.Rubber production device according to production technique, to produce product different, institute's sewer water quality has larger difference, wherein larger with styrene-butadiene rubber(SBR), paracril sewage disposal difficulty.
The processing of wastewater produced by synthetic rubber is all the method that adopts pre-treatment to combine with biochemical treatment substantially, and relevant technologies R&D work is also to lay stress on how to improve in pre-treatment efficiency and biochemical treatment efficiency.Current, the pre-treatment measure of wastewater produced by synthetic rubber mainly comprises coagulation sedimentation, mixed condensed gas flotation process, electrolytic flocculation method, catalytic oxidation etc., and its follow-up biochemical treatment measure mainly comprises hydrolysis acidification method, contact oxidation method, activated sludge process, the efficient dominant bacteria of use etc.The engineering practice of processing from current most wastewater produced by synthetic rubber; although the method combining with biochemical treatment by pre-treatment can have to the pollutent in waste water obvious removal really; but the raising along with various places emission standard; in waste water, there are some not biodegradable materials; cannot further remove and reduce organic content by biochemical method; and the water outlet after biochemical treatment also contains suspended substance conventionally; cause the pressure up to standard of biochemical treatment water outlet still larger, sometimes even can not be up to standard.
Current, aspect advanced treatment and reuse at synthetic rubber waste water after secondary biochemical treatment, practical technique is blank substantially, possessor has proposed the methods such as coagulating sedimentation, charcoal absorption, Fenton reagent oxidation, reverse-osmosis treated to the greatest extent, but that these methods also exist is not ideal enough such as processing efficiency, processing costs is higher, produce numerous restraining factors such as secondary pollution, treatment effect be stable not, thereby is difficult to realize industrial application.
Summary of the invention
Technical problem to be solved by this invention is to provide the treatment process that a kind of simple to operate, non-secondary pollution and discharge meet the rubber production sewage of discharging standards.
For solving above technical problem, the treatment process of a kind of rubber production sewage of the present invention, it comprises the steps:
1, a treatment process for synthetic rubber production waste, is characterized in that comprising the steps:
(1) precipitation: first rubber sewage enter preliminary sedimentation tank and carry out homogeneous precipitation, sewage after precipitation by Pipeline transport to equalizing tank;
(2) remove suspended particle and colloidalmaterial: the sewage after equalizing tank regulates is promoted to by pipeline in the reaction coagulation tank in air-flotation system, in reaction coagulation tank, add polymerize aluminum chloride and polyacrylamide, then enter air flotation turbo, in air flotation turbo, remove suspended particle and colloidalmaterial in sewage;
(3) biological degradation: sewage enters the hydrolysis acidification pool of biochemical treatment system again, under the effect of acidication bacterium, by macromolecular substance in sewage, be difficult to biodegradable Substance Transformation for being easy to biodegradable small-molecule substance, sewage enters anoxic/aerobic oxidation pond after hydrolysis acidification pool is discharged, and by the biological degradation of microorganism, removes dirty organic pollutants;
(4) once oxidation: then effluent stream is to second pond, supernatant liquor after precipitation flow to catalytic oxidation unit water collecting basin, by pipeline, enter catalyst oxidation reactor again, first in catalyst oxidation reactor, add polyacrylamide, and in catalyst oxidation reactor, add ferrous sulfate and hydrogen peroxide reagent, produce the extremely strong hydroxyl radical free radical of oxidation capacity, by the most of oxidation removal of dirty organic pollutants, reacted sewage enters oxidizing, flocculating pond;
(5) secondary oxidation: add oxygenant to be further oxidized, add flocculation agent after complete oxidation, make reacted tiny alumen ustum further collide, flocculate, the flocculation reaction time is 20-40min, finally enters into three heavy ponds and precipitates, and water outlet can qualified discharge.
On the basis of technique scheme, the described preliminary sedimentation tank front end of step (1) is provided with flocculation stirring pond.
The pH value of the sewage after equalizing tank regulates of above-mentioned steps (2) is 6.5~8.5, and sewage stops 12-24h in equalizing tank.
Above-mentioned steps (4) the input amount of hydrogen peroxide be 0.1~0.4mg/L, the input amount of ferrous sulfate is 50~200mg/L, the add-on of polyacrylamide is 1~2mg/L.
Compared with prior art, the beneficial effect that the present invention has is:
Catalytic oxidation technique of the present invention adopts Fenton reagent oxidation, H 2o 2at Fe 2+katalysis under decompose to produce the hydroxyl radical free radical that has high reaction activity, then by approach such as transfer transports, oxidation operation being resolved into small molecules, even to make micromolecular oxidation operation be water and CO 2, indivedual direct mineralisings of organism.Meanwhile, Fe 2+be oxidized to Fe 3+produce coagulating sedimentation, remove large amount of organic, so Fenton reagent is that current collection chemical coagulation, chemical catalytic oxidation and materialization flocculation sediment are in the treatment process of one.The present invention adopts the neutral Fenton method of improvement, and the optimal drug binding site by controlling chemical feeding quantity and forming in catalyst oxidation reactor, uses minimum dose to reach best removal effect.Because alkali regulates pH after need not front acid, so working cost reduces greatly, operation operation is simpler and more direct, and operating performance is better.
Embodiment
For ease of understanding the present invention, it is as follows that the present invention enumerates embodiment.Those skilled in the art should understand, described embodiment only, for helping to understand the present invention, should not be considered as concrete restriction of the present invention.
As no specific instructions, various raw material of the present invention all can obtain by commercially available; Or prepare according to the ordinary method of this area.Unless otherwise defined or described herein, all specialties used herein and scientific words and the art technology same meaning that skillfully person of entering is familiar.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Unless otherwise defined or described herein, the familiar same meaning of all specialties used herein and scientific words and those skilled in the art.In addition any method similar or impartial to described content and material all can be applicable in the inventive method.
Embodiment 1
A treatment process for synthetic rubber production waste, is characterized in that comprising the steps:
(1) precipitation: first rubber sewage enter preliminary sedimentation tank and carry out homogeneous precipitation, sewage after precipitation by Pipeline transport to equalizing tank;
(2) remove suspended particle and colloidalmaterial: the sewage after equalizing tank regulates is promoted to by pipeline in the reaction coagulation tank in air-flotation system, in reaction coagulation tank, add polymerize aluminum chloride and polyacrylamide, then enter air flotation turbo, in air flotation turbo, remove suspended particle and colloidalmaterial in sewage;
(3) biological degradation: sewage enters the hydrolysis acidification pool of biochemical treatment system again, under the effect of acidication bacterium, by macromolecular substance in sewage, be difficult to biodegradable Substance Transformation for being easy to biodegradable small-molecule substance, sewage enters anoxic/aerobic oxidation pond after hydrolysis acidification pool is discharged, and by the biological degradation of microorganism, removes dirty organic pollutants;
(4) once oxidation: then effluent stream is to second pond, supernatant liquor after precipitation flow to catalytic oxidation unit water collecting basin, by pipeline, enter catalyst oxidation reactor again, first in catalyst oxidation reactor, add polyacrylamide, and in catalyst oxidation reactor, add ferrous sulfate and hydrogen peroxide reagent, produce the extremely strong hydroxyl radical free radical of oxidation capacity, by the most of oxidation removal of dirty organic pollutants, reacted sewage enters oxidizing, flocculating pond;
(5) secondary oxidation: add oxygenant to be further oxidized, add flocculation agent after complete oxidation, make reacted tiny alumen ustum further collide, flocculate, the flocculation reaction time is 20-40min, finally enters into three heavy ponds and precipitates, and water outlet can qualified discharge.
The preliminary sedimentation tank front end of above-mentioned steps (1) is provided with flocculation stirring pond.
The pH value of the sewage after equalizing tank regulates of above-mentioned steps (2) is 6.5~8.5, and sewage stops 12-24h in equalizing tank.
Above-mentioned steps (4) the input amount of hydrogen peroxide be 0.3mg/L, the input amount of ferrous sulfate is 150mg/L, the add-on of polyacrylamide is 1.5mg/L.
Embodiment 2
A treatment process for synthetic rubber production waste, is characterized in that comprising the steps:
(1) precipitation: first rubber sewage enter preliminary sedimentation tank and carry out homogeneous precipitation, sewage after precipitation by Pipeline transport to equalizing tank;
(2) remove suspended particle and colloidalmaterial: the sewage after equalizing tank regulates is promoted to by pipeline in the reaction coagulation tank in air-flotation system, in reaction coagulation tank, add polymerize aluminum chloride and polyacrylamide, then enter air flotation turbo, in air flotation turbo, remove suspended particle and colloidalmaterial in sewage;
(3) biological degradation: sewage enters the hydrolysis acidification pool of biochemical treatment system again, under the effect of acidication bacterium, by macromolecular substance in sewage, be difficult to biodegradable Substance Transformation for being easy to biodegradable small-molecule substance, sewage enters anoxic/aerobic oxidation pond after hydrolysis acidification pool is discharged, and by the biological degradation of microorganism, removes dirty organic pollutants;
(4) once oxidation: then effluent stream is to second pond, supernatant liquor after precipitation flow to catalytic oxidation unit water collecting basin, by pipeline, enter catalyst oxidation reactor again, first in catalyst oxidation reactor, add polyacrylamide, and in catalyst oxidation reactor, add ferrous sulfate and hydrogen peroxide reagent, produce the extremely strong hydroxyl radical free radical of oxidation capacity, by the most of oxidation removal of dirty organic pollutants, reacted sewage enters oxidizing, flocculating pond;
(5) secondary oxidation: add oxygenant to be further oxidized, add flocculation agent after complete oxidation, make reacted tiny alumen ustum further collide, flocculate, the flocculation reaction time is 20-40min, finally enters into three heavy ponds and precipitates, and water outlet can qualified discharge.
The preliminary sedimentation tank front end of above-mentioned steps (1) is provided with flocculation stirring pond.
The pH value of the sewage after equalizing tank regulates of above-mentioned steps (2) is 6.5~8.0, and sewage stops 12-24h in equalizing tank.
Above-mentioned steps (4) the input amount of hydrogen peroxide be 0.2mg/L, the input amount of ferrous sulfate is 100mg/L, the add-on of polyacrylamide is 1.0mg/L.
Applicant's statement, person of ordinary skill in the field is on the basis of above-described embodiment, by the concrete content point value of above-described embodiment component, combined with the technical scheme of summary of the invention part, thereby the new numerical range producing, also be one of record scope of the present invention, the application, for making specification sheets simple and clear, is no longer enumerated these numerical ranges.

Claims (4)

1. a treatment process for synthetic rubber production waste, is characterized in that comprising the steps:
(1) precipitation: first rubber sewage enter preliminary sedimentation tank and carry out homogeneous precipitation, sewage after precipitation by Pipeline transport to equalizing tank;
(2) remove suspended particle and colloidalmaterial: the sewage after equalizing tank regulates is promoted to by pipeline in the reaction coagulation tank in air-flotation system, in reaction coagulation tank, add polymerize aluminum chloride and polyacrylamide, then enter air flotation turbo, in air flotation turbo, remove suspended particle and colloidalmaterial in sewage;
(3) biological degradation: sewage enters the hydrolysis acidification pool of biochemical treatment system again, under the effect of acidication bacterium, by macromolecular substance in sewage, be difficult to biodegradable Substance Transformation for being easy to biodegradable small-molecule substance, sewage enters anoxic/aerobic oxidation pond after hydrolysis acidification pool is discharged, and by the biological degradation of microorganism, removes dirty organic pollutants;
(4) once oxidation: then effluent stream is to second pond, supernatant liquor after precipitation flow to catalytic oxidation unit water collecting basin, by pipeline, enter catalyst oxidation reactor again, first in catalyst oxidation reactor, add polyacrylamide, and in catalyst oxidation reactor, add ferrous sulfate and hydrogen peroxide reagent, produce the extremely strong hydroxyl radical free radical of oxidation capacity, by the most of oxidation removal of dirty organic pollutants, reacted sewage enters oxidizing, flocculating pond;
(5) secondary oxidation: add oxygenant to be further oxidized, add flocculation agent after complete oxidation, make reacted tiny alumen ustum further collide, flocculate, the flocculation reaction time is 20-40min, finally enters into three heavy ponds and precipitates, and water outlet can qualified discharge.
2. according to the treatment process of a kind of synthetic rubber production waste claimed in claim 1, it is characterized in that: the described preliminary sedimentation tank front end of step (1) is provided with flocculation stirring pond.
3. according to the treatment process of a kind of synthetic rubber production waste claimed in claim 1, it is characterized in that: the pH value of the sewage after equalizing tank regulates of described step (2) is 6.5~8.5, and sewage stops 12-24h in equalizing tank.
4. according to the treatment process of a kind of synthetic rubber production waste claimed in claim 1, it is characterized in that: described step (4) the input amount of hydrogen peroxide be 0.1~0.4mg/L, the input amount of ferrous sulfate is 50~200mg/L, and the add-on of polyacrylamide is 1~2mg/L.
CN201310572422.1A 2013-11-13 2013-11-13 Treatment method of synthetic rubber production waste water Pending CN103723883A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104017217A (en) * 2014-06-09 2014-09-03 锦西化工研究院有限公司 Method for improving efficiency of washing working procedure in polysulfide rubber production
CN108892272A (en) * 2018-07-18 2018-11-27 绍兴齐英膜科技有限公司 The pretreating process of wastewater from viscose fiber producing
CN108975628A (en) * 2018-08-20 2018-12-11 朱翠帮 A kind for the treatment of process of mining area sewage

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CN102515433A (en) * 2011-12-14 2012-06-27 山东齐鲁石化工程有限公司 Synthetic rubber wastewater treatment process

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104017217A (en) * 2014-06-09 2014-09-03 锦西化工研究院有限公司 Method for improving efficiency of washing working procedure in polysulfide rubber production
CN104017217B (en) * 2014-06-09 2016-06-15 锦西化工研究院有限公司 A kind of improve the method for washing step efficiency during thiorubber. produces
CN108892272A (en) * 2018-07-18 2018-11-27 绍兴齐英膜科技有限公司 The pretreating process of wastewater from viscose fiber producing
CN108975628A (en) * 2018-08-20 2018-12-11 朱翠帮 A kind for the treatment of process of mining area sewage

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