CN103771662A - Printing and dyeing wastewater treatment process - Google Patents
Printing and dyeing wastewater treatment process Download PDFInfo
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- CN103771662A CN103771662A CN201410023873.4A CN201410023873A CN103771662A CN 103771662 A CN103771662 A CN 103771662A CN 201410023873 A CN201410023873 A CN 201410023873A CN 103771662 A CN103771662 A CN 103771662A
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Abstract
The invention relates to a printing and dyeing wastewater treatment process. The process comprises the following steps: sequentially feeding wastewater into a regulating pond, a coagulative precipitation pond, a hydrolysis pond, a contact oxidation pond and a decolorization treatment pond so as to obtain effluent, namely, regulating the pH (Power of Hydrogen) of the wastewater in the regulating pond to reach 6 to 8 and remaining for 12 to 24 hours; then feeding the wastewater into the coagulative precipitation pond and precipitating for 3 to 5 hours by adding a flocculating agent; feeding the wastewater into the hydrolysis pond and performing acidification hydrolysis for 2 to 5 hours; feeding the wastewater into the contact oxidation pond and performing contact oxidation for 3 to 5 hours; and feeding the wastewater into the decolorization treatment pond and performing decolorization treatment for 1 to 2 hours, thereby obtaining the effluent. A decoloring agent is added into the decolorization treatment pond. After the effluent is precipitated once, the removal rate of COD (Chemical Oxygen Demand) can reach more than 70%; the removal rate of BOD (Biochemical Oxygen Demand) can reach 40% or so. The effluent is acidified and oxidated after entering the hydrolysis pond and the contact oxidation pond; finally, the step of the decolorization treatment to the effluent is added. The effluent after being treated in the decolorization treatment pond can reach the national standard, and can be directly discharged. According to the process, multiple precipitations are not required, i.e., the few steps are needed, so that the cost is greatly saved while the efficiency is improved.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of printing-dyeing waste water treatment process.
Background technology
The development of industrial and agricultural production, in enriching wealth to mankind's creation, has also caused the pollution problem of harm in various degree, particularly water resources to environment, more and more receive people's concern.The industrial wastewater pollution thing of different industries differs widely, even each substances content also has larger difference in the trade effluent of the different manufacturing enterprises of same industry, therefore must be designed with treatment process targetedly according to the actual pollutent situation of waste water for sewage disposal.
At present along with textile industry must develop, increasing textile enterprise produces a large amount of dyeing waste waters, in dyeing waste water, contain dyestuff, slurry, auxiliary agent, finish, soda acid, fiber impurity and inorganic salt etc., the wherein nitro in dyestuff and amino-complex, and the heavy metal element such as copper, chromium, zinc, arsenic, there is larger bio-toxicity, serious environment pollution.At present long for most treatment time of processing of dyeing waste water, processing step is many, and cost is high.
Summary of the invention
The object of the invention is to provide a kind of printing-dyeing waste water treatment process, and treatment process is simple, and step is few, and effluent quality meets national requirements, greatly cost-saving, raises the efficiency.
To achieve these goals, the technical solution used in the present invention is: a kind of printing-dyeing waste water treatment process, waste water is passed into equalizing tank successively, coagulative precipitation tank, hydrolytic tank, contact-oxidation pool, water outlet after decolouring treating pond, waste water regulates pH in 6 ~ 8 scopes in equalizing tank, after stopping 12 ~ 24 h, enter coagulative precipitation tank, in coagulative precipitation tank, add flocculation agent, the add-on of described flocculation agent is to add 8 ~ 15g in every 1L waste water, precipitation 3 ~ 5 h, then enter hydrolytic tank and carry out acidification hydrolization, after 2 ~ 5 h, enter contact-oxidation pool, after catalytic oxidation 3 ~ 5 h, enter decolouring treating pond, water outlet after decolouring processing 1 ~ 2h, in described decolouring treating pond, add discoloring agent, the add-on of discoloring agent is to add 5 ~ 10g in every 1L waste water, described discoloring agent be gac and zeolite in mass ratio 1 ~ 3:1 mix.
Described flocculation agent is the mixture of porous carbon granules, chitosan and aluminium salt, and three's mass ratio is (1 ~ 3): (2 ~ 5): (1 ~ 2).
Described aluminium salt is Tai-Ace S 150 or aluminium chlorohydroxide.
Described discoloring agent be gac and zeolite in mass ratio 2:1 mix.
Beneficial effect: the invention provides a kind of printing-dyeing waste water treatment process, treatment process is simple, in coagulative precipitation tank, add porous carbon granules, the mixture of chitosan and aluminium salt is as flocculating settling agent, sedimentation effect is good, after single precipitation, COD clearance can reach more than 70%, BOD clearance is in 40% left and right, water outlet enters hydrolytic tank and contact-oxidation pool acidifying oxide treatment, finally increasing by a step decolouring processes, except decolouring left and right, also COD and the BOD of water body have further been reduced, and the content of heavy metal, after decolouring treating pond, water outlet is up to state standards, can directly discharge, this technique is without repeatedly precipitating, step is few, greatly cost-saving, raise the efficiency.
Embodiment
In following examples, getting dyeing waste-water sample is the production water outlet of Tongzhou District, Nantong textile company.
Embodiment 1:
Water-quality guideline: pH value 9 ~ 10.5, COD 600 mg/L, BOD 200 mg/L, 300 times of colourities.
Waste water is regulated in equalizing tank pH in 6 ~ 8 scopes, after stopping 12 h, enter coagulative precipitation tank, in coagulative precipitation tank, add flocculation agent, flocculation agent is porous carbon granules, chitosan and the Tai-Ace S 150 mixture of 1:2:1 in mass ratio, and add-on is to add 8g in every 1L waste water, precipitation 5 h, then enter hydrolytic tank and carry out acidification hydrolization, after 3.5h, enter contact-oxidation pool, after catalytic oxidation 4 h, enter decolouring treating pond, water outlet after decolouring processing 1.5h; In described decolouring treating pond, add discoloring agent, the add-on of discoloring agent is to add 5g in every 1L waste water, and described discoloring agent is that gac and zeolite mix in mass ratio at 1: 1, effluent quality after processing: pH value 6 ~ 7, COD 80 mg/L, BOD 20 mg/L, 10 times of colourities.
Embodiment 2:
Water-quality guideline: pH value 10 ~ 12, COD 1000 mg/L, BOD 400 mg/L, 500 times of colourities.
Waste water is regulated in equalizing tank pH in 6 ~ 8 scopes, after stopping 24 h, enter coagulative precipitation tank, in coagulative precipitation tank, add flocculation agent, flocculation agent is porous carbon granules, chitosan and the aluminium chlorohydroxide mixture of 3:5:2 in mass ratio, and add-on is to add 15g in every 1L waste water, precipitation 3 h, then enter hydrolytic tank and carry out acidification hydrolization, after 3.5h, enter contact-oxidation pool, after catalytic oxidation 4 h, enter decolouring treating pond, water outlet after decolouring processing 1.5h; In described decolouring treating pond, add discoloring agent, the add-on of discoloring agent is to add 5g in every 1L waste water, and described discoloring agent is that gac and zeolite mix in mass ratio at 2: 1, effluent quality after processing: pH value 7 ~ 8, COD 110 mg/L, BOD 30 mg/L, 10 times of colourities.
Claims (4)
1. a printing-dyeing waste water treatment process, waste water is passed into equalizing tank successively, coagulative precipitation tank, hydrolytic tank, contact-oxidation pool, it is characterized in that: after contact-oxidation pool, increase decolouring treating pond, waste water regulates pH in 6 ~ 8 scopes in equalizing tank, after stopping 12 ~ 24 h, enter coagulative precipitation tank, in coagulative precipitation tank, add flocculation agent, the add-on of described flocculation agent is to add 8 ~ 15g in every 1L waste water, precipitation 3 ~ 5 h, then enter hydrolytic tank and carry out acidification hydrolization, after 2 ~ 5 h, enter contact-oxidation pool, after catalytic oxidation 3 ~ 5 h, enter decolouring treating pond, water outlet after decolouring processing 1 ~ 2h, in described decolouring treating pond, add discoloring agent, the add-on of discoloring agent is to add 5 ~ 10g in every 1L waste water, described discoloring agent be gac and zeolite in mass ratio 1 ~ 3:1 mix.
2. a kind of printing-dyeing waste water treatment process according to claim 1, is characterized in that: described flocculation agent is the mixture of porous carbon granules, chitosan and aluminium salt, and three's mass ratio is (1 ~ 3): (2 ~ 5): (1 ~ 2).
3. a kind of printing-dyeing waste water treatment process according to claim 2, is characterized in that: described aluminium salt is Tai-Ace S 150 or aluminium chlorohydroxide.
4. a kind of printing-dyeing waste water treatment process according to claim 1, is characterized in that: described discoloring agent be gac and zeolite in mass ratio 2:1 mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023873.4A CN103771662A (en) | 2014-01-20 | 2014-01-20 | Printing and dyeing wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410023873.4A CN103771662A (en) | 2014-01-20 | 2014-01-20 | Printing and dyeing wastewater treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103771662A true CN103771662A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410023873.4A Withdrawn CN103771662A (en) | 2014-01-20 | 2014-01-20 | Printing and dyeing wastewater treatment process |
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| CN (1) | CN103771662A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030532A (en) * | 2014-06-26 | 2014-09-10 | 南通润启时装有限公司 | Printing and dyeing wastewater treatment process of textile fabric |
| CN104291423A (en) * | 2014-10-22 | 2015-01-21 | 山东大学 | Composite coagulant for removing blue algae without breakage as well as preparation method and application of composite coagulant |
| CN104926039A (en) * | 2015-06-19 | 2015-09-23 | 王桂霞 | Method for treating printing and dyeing wastewater |
| CN104944680A (en) * | 2015-05-20 | 2015-09-30 | 上虞市力德助剂有限公司 | Printing and dyeing auxiliary sewage treatment process |
| CN108658392A (en) * | 2018-06-11 | 2018-10-16 | 河南新野纺织股份有限公司 | A kind of high-tech environmental protection printing-dyeing waste water treatment process |
| CN108911267A (en) * | 2018-08-24 | 2018-11-30 | 湖州裕帛纺织有限公司 | Dyeing and printing sewage processing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61274787A (en) * | 1985-05-29 | 1986-12-04 | Agency Of Ind Science & Technol | Method for purifying treatment of colored organic impurity-containing aqueous solution |
| WO2006045857A1 (en) * | 2004-10-21 | 2006-05-04 | Ecotwist, S.L. | Process and reagent for the treatment of industrial wastewater |
| CN201250137Y (en) * | 2008-08-07 | 2009-06-03 | 石永丰 | Printing and dyeing wastewater oxidizing tower |
| CN103274544A (en) * | 2013-05-27 | 2013-09-04 | 云南智慧仁核桃股份有限公司 | Flocculation precipitation and filtering integrated sewage treatment device and sewage treatment method thereof |
-
2014
- 2014-01-20 CN CN201410023873.4A patent/CN103771662A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61274787A (en) * | 1985-05-29 | 1986-12-04 | Agency Of Ind Science & Technol | Method for purifying treatment of colored organic impurity-containing aqueous solution |
| WO2006045857A1 (en) * | 2004-10-21 | 2006-05-04 | Ecotwist, S.L. | Process and reagent for the treatment of industrial wastewater |
| CN201250137Y (en) * | 2008-08-07 | 2009-06-03 | 石永丰 | Printing and dyeing wastewater oxidizing tower |
| CN103274544A (en) * | 2013-05-27 | 2013-09-04 | 云南智慧仁核桃股份有限公司 | Flocculation precipitation and filtering integrated sewage treatment device and sewage treatment method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 龚为进 等: "物化/厌氧水解/生物强化脱色处理印染废水", 《工业水处理》, vol. 33, no. 8, 31 August 2013 (2013-08-31) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030532A (en) * | 2014-06-26 | 2014-09-10 | 南通润启时装有限公司 | Printing and dyeing wastewater treatment process of textile fabric |
| CN104030532B (en) * | 2014-06-26 | 2015-10-28 | 南通润启时装有限公司 | Weaving face fabric printing-dyeing waste water treatment process |
| CN104291423A (en) * | 2014-10-22 | 2015-01-21 | 山东大学 | Composite coagulant for removing blue algae without breakage as well as preparation method and application of composite coagulant |
| CN104291423B (en) * | 2014-10-22 | 2016-03-23 | 山东大学 | A kind of compound coagulant without damaged removal blue-green algae and its preparation method and application |
| CN104944680A (en) * | 2015-05-20 | 2015-09-30 | 上虞市力德助剂有限公司 | Printing and dyeing auxiliary sewage treatment process |
| CN104926039A (en) * | 2015-06-19 | 2015-09-23 | 王桂霞 | Method for treating printing and dyeing wastewater |
| CN108658392A (en) * | 2018-06-11 | 2018-10-16 | 河南新野纺织股份有限公司 | A kind of high-tech environmental protection printing-dyeing waste water treatment process |
| CN108911267A (en) * | 2018-08-24 | 2018-11-30 | 湖州裕帛纺织有限公司 | Dyeing and printing sewage processing system |
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Application publication date: 20140507 |