CN102225826A - Decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from quinacridone pigment production process - Google Patents
Decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from quinacridone pigment production process Download PDFInfo
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- CN102225826A CN102225826A CN 201110120146 CN201110120146A CN102225826A CN 102225826 A CN102225826 A CN 102225826A CN 201110120146 CN201110120146 CN 201110120146 CN 201110120146 A CN201110120146 A CN 201110120146A CN 102225826 A CN102225826 A CN 102225826A
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Abstract
The invention relates to a decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from a quinacridone pigment production process, which comprises the following steps of: a. electrolyzing a sodium chloride aqueous solution to generate chlorine gas and a sodium hydroxide solution; b. carrying out a reaction on chlorine gas and water in a chlorine gas absorption tank to generate an aqueous solution of hydrogen chloride and hypochlorous acid, introducing the aqueous solution to an oxidation tank through a pipeline and then entering the high-concentration phosphorus-containing wastewater; c. controlling the pH of the wastewater at 6-8; d. carrying out biological treatment on the wastewater utilizing the microorganisms in the tank; e. sterilizing the treated wastewater; and f. standing the wastewater. The decolorization and phosphorus reduction method provided by the invention has low cost and a good treatment effect.
Description
Technical field
The present invention relates to the decolouring and the method for reducing phosphorus of quinacridone series pigment high-concentration phosphorus-containing wastewater.
Background technology
At present, the high-grade pigment dyestuff product of quinacridone all has good market at home and abroad, and the foreign exchange earning benefit is fine.But product per ton will produce about 100 tons of the phosphoric acid waste water that concentration is 10%-20% in this pigment production technological process.If directly discharging not only causes serious environmental pollution, and be great waste to the phosphor resource of preciousness.It is a good approach that solves the environmental pollution and the wasting of resources that decolouring falls that phosphorus recycles then.
Decoloration treatment method commonly used has oxidation style and absorption method.Oxidative decoloration is divided into three kinds of oxychlorination method, ozone oxidation method and photooxidation methods again.And the oxychlorination agent commonly used of oxychlorination method has liquid chlorine, chlorinated lime and clorox etc., and the oxychlorination agent all has good decolorizing effect for the water-soluble pigment of easy oxidation and the water-insoluble pigment of easily oxidation.Though and charcoal absorption has decolorizing effect preferably, the processing costs height is difficult to be applied in actual waste water is handled and promote.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of cost is lower, the treatment effect decolouring and the method for reducing phosphorus of quinacridone series pigment high-concentration phosphorus-containing wastewater preferably.
System of the present invention has sodium chloride electrolysis groove, chlorine tourie, sodium hydroxide basin, oxidation pond, pH value equalizing tank, aerobic biochemical pond, settling tank, blower fan, oxidation pond Send out pump, aerobic biochemical pond front pump.Method of the present invention is that electrolytic sodium chloride aqueous solution is produced chlorine and aqueous sodium hydroxide solution in electrolyzer, after absorbing, the water of chlorine in the chlorine tourie generates hydrogenchloride and hypochlorous mixed aqueous solution, high-concentration phosphorus-containing wastewater is successively through by whose solution of above-mentioned mixing being handled, regulate pH value in the pH value equalizing tank, carry out aeration and biochemical treatment in the aerobic biochemical pond, carried out post precipitation in settling tank in oxidation pond, the supernatant liquid recycling.Concrete technical scheme of the present invention is:
(1) the sodium chloride aqueous solution electrolysis is generated chlorine and aqueous sodium hydroxide solution; The aqueous sodium hydroxide solution that generates flows into the sodium hydroxide solution basin, and the chlorine of generation is admitted to the chlorine tourie;
(2) in the chlorine tourie, the reaction of chlorine and water generates hydrogenchloride and the hypochlorous aqueous solution and flow in the oxidation pond and enter in the high-concentration phosphorus-containing wastewater through pipeline, makes waste water decoloring with high-concentration phosphorus-containing wastewater generation oxidizing reaction;
(3) under the state of the waste water air blast in the pH value equalizing tank, sodium hydroxide solution is reached 6-8 by the pH value that pipeline adds to the waste water in the equalizing tank in the PH equalizing tank;
(4) waste water that will regulate pH value is squeezed into the aerobic biochemical pond with aerobic biochemistry pool front pump from the pH value equalizing tank, under the state of waste water blast aeration in the pond, by the microorganism in the pond waste water is carried out biochemical treatment;
(5) make it flow into settling tank to the waste water of handling through aeration, feed the hydrogenchloride that generates in the chlorine tourie and the aqueous solution of clorox simultaneously, waste water is carried out germicidal treatment;
(6) waste water in the settling tank is left standstill, until its precipitation fully, supernatant liquid is recycled again.
In a word, cost of the present invention is lower, efficient is higher, easy to operate, can handle comprehensively and effectively quinacridone series pigment high-concentration phosphorus-containing wastewater.
Embodiment
The decolouring of the quinacridone series pigment high-concentration phosphorus-containing wastewater that provides among realization the present invention is fallen the phosphorus technical scheme and is had following a few step:
A. the sodium chloride aqueous solution electrolysis is generated chlorine and aqueous sodium hydroxide solution; The aqueous sodium hydroxide solution that generates flows into the sodium hydroxide solution basin, and the chlorine of generation is admitted to the chlorine tourie;
B. in the chlorine tourie, chlorine and water reaction generate hydrogenchloride and the hypochlorous aqueous solution and flow in the oxidation pond and enter in the high-concentration phosphorus-containing wastewater through pipeline, make waste water decoloring with high-concentration phosphorus-containing wastewater generation oxidizing reaction;
C. under the state of the waste water air blast in the pH value equalizing tank, sodium hydroxide solution is reached 6-8 by the pH value that pipeline adds to the waste water in the equalizing tank in the PH equalizing tank;
The waste water that d. will regulate pH value is squeezed into the aerobic biochemical pond with aerobic biochemistry pool front pump from the pH value equalizing tank, under the state of waste water blast aeration in the pond, by the microorganism in the pond waste water is carried out biochemical treatment;
E. make it flow into settling tank to the waste water of handling through aeration, feed the hydrogenchloride that generates in the chlorine tourie and the aqueous solution of clorox simultaneously, waste water is carried out germicidal treatment;
F. the waste water in the settling tank is left standstill, until its precipitation fully, supernatant liquid is recycled again.
It is raw material that oxygenant of the present invention adopts lower-cost industrial sodium-chlor, chlorine and sodium hydroxide are produced in electrolysis, directly water absorption chlorine makes the aqueous solution of hydrogenchloride and clorox and high-concentration phosphorus-containing wastewater is carried out oxide treatment in the chlorine tourie, therefore not only having reduced running cost has also saved transportation cost, and the sodium hydroxide solution of producing is except that being used to regulate potential of hydrogen in the PH equalizing tank that is used in system of the present invention, redundance can also be used for Workshop Production, and can further reduce cost.
Water quality after by the present invention quinacridone series pigment high-concentration phosphorus-containing wastewater being handled is carried out total phosphorus determination, reaches discharging standards, can directly discharge or utilizes again.
Claims (1)
1. the decolouring and the method for reducing phosphorus of a quinacridone series pigment high-concentration phosphorus-containing wastewater is characterized in that, comprise following a few step:
A. the sodium chloride aqueous solution electrolysis is generated chlorine and aqueous sodium hydroxide solution; The aqueous sodium hydroxide solution that generates flows into the sodium hydroxide solution basin, and the chlorine of generation is admitted to the chlorine tourie;
B. in the chlorine tourie, chlorine and water reaction generate hydrogenchloride and the hypochlorous aqueous solution and flow in the oxidation pond and enter in the high-concentration phosphorus-containing wastewater through pipeline, make waste water decoloring with high-concentration phosphorus-containing wastewater generation oxidizing reaction;
C. under the state of the waste water air blast in the pH value equalizing tank, sodium hydroxide solution is reached 6-8 by the pH value that pipeline adds to the waste water in the equalizing tank in the PH equalizing tank;
The waste water that d. will regulate pH value is squeezed into the aerobic biochemical pond with aerobic biochemistry pool front pump from the pH value equalizing tank, under the state of waste water blast aeration in the pond, by the microorganism in the pond waste water is carried out biochemical treatment;
E. make it flow into settling tank to the waste water of handling through aeration, feed the hydrogenchloride that generates in the chlorine tourie and the aqueous solution of clorox simultaneously, waste water is carried out germicidal treatment;
F. the waste water in the settling tank is left standstill, until its precipitation fully, supernatant liquid is recycled again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110120146 CN102225826A (en) | 2011-05-10 | 2011-05-10 | Decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from quinacridone pigment production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110120146 CN102225826A (en) | 2011-05-10 | 2011-05-10 | Decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from quinacridone pigment production process |
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| CN102225826A true CN102225826A (en) | 2011-10-26 |
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| CN 201110120146 Pending CN102225826A (en) | 2011-05-10 | 2011-05-10 | Decolorization and phosphorus reduction method for high-concentration phosphorus-containing wastewater from quinacridone pigment production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967417A (en) * | 2016-05-19 | 2016-09-28 | 浙江永泉化学有限公司 | Treatment method of phosphorus-containing wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212962A (en) * | 1997-09-29 | 1999-04-07 | 湘潭市环境保护科学研究所 | Method for producing calcium hydrogen phosphate by recovery and using waste water containing phosphate of quinacridineone serial pigment |
| CN1733625A (en) * | 2004-08-03 | 2006-02-15 | 李双民 | Textile printing and dyeing waste water processing system and method |
| CN100999369A (en) * | 2006-12-20 | 2007-07-18 | 南京大学 | Advanced treatment method of organic pigment waste water |
| CN101774730A (en) * | 2010-01-20 | 2010-07-14 | 苏州苏净环保工程有限公司 | Intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by method |
-
2011
- 2011-05-10 CN CN 201110120146 patent/CN102225826A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212962A (en) * | 1997-09-29 | 1999-04-07 | 湘潭市环境保护科学研究所 | Method for producing calcium hydrogen phosphate by recovery and using waste water containing phosphate of quinacridineone serial pigment |
| CN1733625A (en) * | 2004-08-03 | 2006-02-15 | 李双民 | Textile printing and dyeing waste water processing system and method |
| CN100999369A (en) * | 2006-12-20 | 2007-07-18 | 南京大学 | Advanced treatment method of organic pigment waste water |
| CN101774730A (en) * | 2010-01-20 | 2010-07-14 | 苏州苏净环保工程有限公司 | Intermediate waste water treatment method of quinacridone pigment and modified macroporous absorbent resin used by method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967417A (en) * | 2016-05-19 | 2016-09-28 | 浙江永泉化学有限公司 | Treatment method of phosphorus-containing wastewater |
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Application publication date: 20111026 |