CN105254116A - Chemical waste water processing method - Google Patents
Chemical waste water processing method Download PDFInfo
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- CN105254116A CN105254116A CN201510617268.4A CN201510617268A CN105254116A CN 105254116 A CN105254116 A CN 105254116A CN 201510617268 A CN201510617268 A CN 201510617268A CN 105254116 A CN105254116 A CN 105254116A
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Abstract
The invention discloses a chemical waste water processing method. The chemical waste water processing method comprises following steps: S1, high COD waste water is injected into an electrolytic tank; S2, after electrolysis, waste water is delivered into a neutralization flocculation tank, and polymeric aluminium (PAC) and polyacrylamide (PAM) are added at the same time; S3, catalytic oxidation is carried out, wherein after reaction in S2, FeSO4 is taken as a catalyst, H2O2 and ozone are taken as oxidizing agents for catalytic oxidation; S4, after reaction in S3, a flocculent precipitate is obtained in the tank, and PAC and PAM are added again for reaction; S5, after reaction in S4, an obtained product is delivered into a biochemical reaction basin, and a condensate is also added into the biochemical reaction basin for aerobic biological treatment; and S6, a concentrated solution residue is discharged from a multi-effect reduced pressure evaporation device via evaporation, and is subjected to incineration disposal. The chemical waste water processing method is capable of avoiding insufficient of the prior art; and biological treatment is adopted after pretreatment of waste water so as to realize effective processing of waste water.
Description
Technical field
The present invention relates to chemical wastewater treatment technical field, specifically belong to a kind of technique of chemical wastewater treatment.
Background technology
Along with technical renovation and the high speed development of industry, increasing waste water quality has the feature such as difficult for biological degradation, high COD.Such as, the waste water COD that chemical industry produces can up to tens thousand of and even hundreds thousand of milligrams per liter.Traditional activated sludge process cannot directly process these waste water.At present, the method of process high-COD waste water mainly comprises: 1) bio anaerobic process and coupling technique thereof, such as, up-flow anaerobic sludge blanket (UASB), anaerobic-aerobic coupling technique (A/O), anoxic-anaerobic-aerobic coupling technique (A2O) etc.; 2) chemical oxidation treatment and coupling technique thereof, such as, electrolysis-aerobic coupling technique, Fenton-aerobic coupling technique etc.But the above-mentioned method mentioned all has weak point.Before the defect of bio anaerobic process and coupling technique thereof is severe reaction conditions, apparatus design and safeguards complicated, formal plant running, anaerobic sludge domestication process is very long; The defect of chemical oxidation treatment and coupling technique thereof is the hypertoxic by product of higher, the easy generation of reagent cost.How to process the study hotspot that high-COD waste water is sewage treatment industry always.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of technique of chemical wastewater treatment, overcome the deficiencies in the prior art, carry out a biological disposal upon again after pre-treatment is carried out to waste water, to realize the effective process to waste water.
The technical solution used in the present invention is as follows:
A technique for chemical wastewater treatment, comprises the following steps, and high-COD waste water is injected electrolyzer by S1;
During waste water after electrolysis imports by S2 and in flocculation basin, to add PAC be polymerize aluminum chloride and PAM is simultaneously polyacrylamide;
S3 combines catalyzed oxidation; S2 reaction terminates rear employing, and catalyzed oxidation is using FeSO4 as catalyzer, and H202 and ozone are a catalytic oxidation of oxygenant;
S4 is after S3 reaction terminates, and there is flocculation sediment in pond, and now to add PAC be again polymerize aluminum chloride and PAM is that polyacrylamide reacts;
S4 has reacted and has joined biochemical reaction tank by S5, and joins in biochemical reaction tank by phlegma, carries out Aerobic biological process;
Evaporation of residual concentrated solution is discharged multiple-effect reduction vaporization device by S6, carries out burning disposal.
The volume ratio of the phlegma described in step S5 and evaporation of residual concentrated solution is 8 ~ 9.
In step s 6, described burning disposal refers to directly to be sent evaporation of residual concentrated solution into solid waste treatment plant and burns.
Compared with the prior art, beneficial effect of the present invention is as follows:
The present invention adopts organism to participate in the reduction reaction of negative electrode, makes functional group there occurs change, changes former organic character, reduce colourity, improve B/C value; The colloidal particle of waste water and small disperse contaminants are by electric field action, and produce electrophoresis, the electrode to opposite charges moves, and are gathered on electrode and make clarification of water; Anode nascent state Fe2+ generates Fe (OH) 2 through limestone vegetation, Fe (OH) 3 has extremely strong adsorptive power, water is clarified; The hydrogen that anode generates, has reductibility, nitrobenzene reduction can be become aniline, and the toxicity reducing waste water increases the oxidizability of waste water, is beneficial to and improves subsequent oxidation method Treatment Effects; Catalyzed oxidation in this technique is using FeSO4 as catalyzer from reality, H202 and ozone are a catalytic oxidation of oxygenant thus the COD of waste water are reduced greatly, when wastewater pH is adjusted to alkalescence and has O2 to exist, also can there is following reaction under certain acidity, Fe (OH) 3 exists with colloid form, there is cohesion, absorption property, metallic lead in water and chromium metal and partial suspended thing and impurity can be removed; Carry out a biological disposal upon again after pre-treatment is carried out to waste water, to realize the effective process to waste water.
Embodiment
A technique for chemical wastewater treatment, comprises the following steps, and high-COD waste water is injected electrolyzer by S1;
During waste water after electrolysis imports by S2 and in flocculation basin, to add PAC be polymerize aluminum chloride and PAM is simultaneously polyacrylamide;
S3 combines catalyzed oxidation; S2 reaction terminates rear employing, and catalyzed oxidation is using FeSO4 as catalyzer, and H202 and ozone are a catalytic oxidation of oxygenant;
S4 is after S3 reaction terminates, and there is flocculation sediment in pond, and now to add PAC be again polymerize aluminum chloride and PAM is that polyacrylamide reacts;
S4 has reacted and has joined biochemical reaction tank by S5, and joins in biochemical reaction tank by phlegma, carries out Aerobic biological process; The volume ratio of described phlegma and evaporation of residual concentrated solution is 8 ~ 9.
Evaporation of residual concentrated solution is discharged multiple-effect reduction vaporization device by S6, carries out burning disposal; Described burning disposal refers to directly to be sent evaporation of residual concentrated solution into solid waste treatment plant and burns.
Adopt organism to participate in the reduction reaction of negative electrode, make functional group there occurs change, change former organic character, reduce colourity, improve B/C value; The colloidal particle of waste water and small disperse contaminants are by electric field action, and produce electrophoresis, the electrode to opposite charges moves, and are gathered on electrode and make clarification of water; Anode nascent state Fe2+ generates Fe (OH) 2 through limestone vegetation, Fe (OH) 3 has extremely strong adsorptive power, water is clarified; The hydrogen that anode generates, has reductibility, nitrobenzene reduction can be become aniline, and the toxicity reducing waste water increases the oxidizability of waste water, is beneficial to and improves subsequent oxidation method Treatment Effects; Catalyzed oxidation in this technique is using FeSO4 as catalyzer from reality, H202 and ozone are a catalytic oxidation of oxygenant thus the COD of waste water are reduced greatly, when wastewater pH is adjusted to alkalescence and has O2 to exist, also can there is following reaction under certain acidity, Fe (OH) 3 exists with colloid form, there is cohesion, absorption property, metallic lead in water and chromium metal and partial suspended thing and impurity can be removed; Carry out a biological disposal upon again after pre-treatment is carried out to waste water, to realize the effective process to waste water.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a technique for chemical wastewater treatment, is characterized in that, comprises the following steps, and high-COD waste water is injected electrolyzer by S1;
During waste water after electrolysis imports by S2 and in flocculation basin, to add PAC be polymerize aluminum chloride and PAM is simultaneously polyacrylamide;
S3 combines catalyzed oxidation; S2 reaction terminates rear employing, and catalyzed oxidation is using FeSO4 as catalyzer, and H202 and ozone are a catalytic oxidation of oxygenant;
S4 is after S3 reaction terminates, and there is flocculation sediment in pond, and now to add PAC be again polymerize aluminum chloride and PAM is that polyacrylamide reacts;
S4 has reacted and has joined biochemical reaction tank by S5, and joins in biochemical reaction tank by phlegma, carries out Aerobic biological process;
Evaporation of residual concentrated solution is discharged multiple-effect reduction vaporization device by S6, carries out burning disposal.
2. the technique of a kind of chemical wastewater treatment according to claim 1, is characterized in that: the volume ratio of the phlegma described in step S5 and evaporation of residual concentrated solution is 8 ~ 9.
3.
according to claimthe technique of a kind of chemical wastewater treatment described in 2, is characterized in that: in step s 6, and described burning disposal refers to directly to be sent evaporation of residual concentrated solution into solid waste treatment plant and burn.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510617268.4A CN105254116A (en) | 2015-09-24 | 2015-09-24 | Chemical waste water processing method |
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| CN201510617268.4A CN105254116A (en) | 2015-09-24 | 2015-09-24 | Chemical waste water processing method |
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| CN105254116A true CN105254116A (en) | 2016-01-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819633A (en) * | 2016-05-30 | 2016-08-03 | 安庆丰源化工有限公司 | Method for chemical wastewater treatment |
| CN107601742A (en) * | 2017-10-27 | 2018-01-19 | 湖南绿网环保科技有限责任公司 | A kind of processing system and method for high salt high concentrated organic wastewater |
| CN110698003A (en) * | 2019-11-22 | 2020-01-17 | 四会市宏创工业机械设备有限公司 | Aluminum alloy electrophoresis application effluent treatment plant |
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| EP1630139A1 (en) * | 2004-08-23 | 2006-03-01 | Amecon Environmental Consultancy | Process for the biological denitrification of ammonium containing wastewater |
| CN102336502A (en) * | 2011-08-26 | 2012-02-01 | 无锡通源环保技术工程有限公司 | Combination type treatment method for pharmaceutical waste water |
| US20120138527A1 (en) * | 2010-12-06 | 2012-06-07 | Nanjing University | Integrated bioreactor and method of using the same for treatment of highly-concentrated organic wastewater |
| CN102583879A (en) * | 2012-01-16 | 2012-07-18 | 宁波工程学院 | High-concentration integrated chemical organic wastewater treatment process |
| CN104496121A (en) * | 2014-12-17 | 2015-04-08 | 巨野县鑫源化工有限公司 | Method for treating wastewater by virtue of multi-stage catalytic oxidation, micro electrolysis and multi-effect evaporation |
-
2015
- 2015-09-24 CN CN201510617268.4A patent/CN105254116A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1630139A1 (en) * | 2004-08-23 | 2006-03-01 | Amecon Environmental Consultancy | Process for the biological denitrification of ammonium containing wastewater |
| US20120138527A1 (en) * | 2010-12-06 | 2012-06-07 | Nanjing University | Integrated bioreactor and method of using the same for treatment of highly-concentrated organic wastewater |
| CN102336502A (en) * | 2011-08-26 | 2012-02-01 | 无锡通源环保技术工程有限公司 | Combination type treatment method for pharmaceutical waste water |
| CN102583879A (en) * | 2012-01-16 | 2012-07-18 | 宁波工程学院 | High-concentration integrated chemical organic wastewater treatment process |
| CN104496121A (en) * | 2014-12-17 | 2015-04-08 | 巨野县鑫源化工有限公司 | Method for treating wastewater by virtue of multi-stage catalytic oxidation, micro electrolysis and multi-effect evaporation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819633A (en) * | 2016-05-30 | 2016-08-03 | 安庆丰源化工有限公司 | Method for chemical wastewater treatment |
| CN107601742A (en) * | 2017-10-27 | 2018-01-19 | 湖南绿网环保科技有限责任公司 | A kind of processing system and method for high salt high concentrated organic wastewater |
| CN107601742B (en) * | 2017-10-27 | 2020-06-23 | 湖南绿网环保科技有限责任公司 | System and method for treating high-salt high-concentration organic wastewater |
| CN110698003A (en) * | 2019-11-22 | 2020-01-17 | 四会市宏创工业机械设备有限公司 | Aluminum alloy electrophoresis application effluent treatment plant |
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