CN103992008B - A kind of printing-dyeing waste water treatment process without mud - Google Patents
A kind of printing-dyeing waste water treatment process without mud Download PDFInfo
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- CN103992008B CN103992008B CN201410222543.8A CN201410222543A CN103992008B CN 103992008 B CN103992008 B CN 103992008B CN 201410222543 A CN201410222543 A CN 201410222543A CN 103992008 B CN103992008 B CN 103992008B
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- waste water
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Abstract
The invention discloses a kind of printing-dyeing waste water treatment process without mud, comprise the following steps: enter grid filtration, equalizing tank regulates pH value, the decolouring of decolouring pond and flocculation reaction, use high-frequency pulse producer electrolysis dyeing waste water, occur to be hydrolyzed and acidification reaction with dyeing waste water in active sludge, enter Aerobic Pond and utilize oxygen metabolism, introduce settling tank, the mud produced all is back in anaerobic hydrolysis acidification tank, introduce after sand filter filters and flow into oxidation pond, treatment process of the present invention is simple, link is compact, easy and simple to handle, after single precipitation, COD clearance can reach more than 70%, BOD clearance is about 40%, water quality after process is high, the requirement of producing reuse water can be met, as further advanced treatment then can reuse, there is no outer blowdown mud, do not find mud excessive increase in anaerobic biological pond, this technique is without the need to repeatedly precipitating, step is few, greatly cost-saving, raise the efficiency.
Description
Technical field
The invention belongs to technical field of sewage, be specifically related to a kind of printing-dyeing waste water treatment process without mud.
Background technology
Along with society's constantly progress, the requirement of people to environmental protection is more and more higher, and the requirement of wherein waste water treatment discharge is more and more stricter, and dyeing waste water is that processing is cotton, fiber crops, man-made fiber and blending product thereof are the waste water that main printing and dyeing mill discharges, and its waste discharge amount is comparatively large, every dyeing and printing process 1 ton of textiles water consumption 100 tons-200 tons, wherein 80%-90% becomes waste water, amount of pollutants is many, and kind is mixed, and the waste water of printing and dyeing enterprise is generally by desized wastewater, boiled-off waste water, bleaching effluent, mercerizing waste water, dyeing waste-water, printing waste water, finishing process waste water mixes, the entrainment not only containing fibrous material itself in the waste water of discharge, also has slurry used in the course of processing, finish, dyestuff and chemical assistant etc., cause COD to change greatly, PH is high, colourity is large, organic content is high, the change of the water temperature water yield greatly, thus have impact on the treatment effect of waste water, serious environment pollution, long for process most treatment time of dyeing waste water at present, processing step is many, and cost is high, and also have mud after processing, special sludge treatment equipment be established, increase cost.
Summary of the invention
For solving the problem, the invention discloses a kind of printing-dyeing waste water treatment process without mud, the water outlet after process can reach a national class emission standard, and treatment effect is stablized, and does not also have outer blowdown mud, does not find mud excessive increase in anaerobic biological pond.
For achieving the above object, technical scheme of the present invention is as follows:
Without a printing-dyeing waste water treatment process for mud, it is characterized in that: comprise the following steps:
(1) dyeing waste water enters grid filtration;
(2) the dyeing waste water pump after step (1) is squeezed into equalizing tank, add acid or pH value is adjusted to 8.5-9 by alkaline solution, dyeing waste water time in equalizing tank is 6h-12h;
(3) dyeing waste water after step (2) is introduced decolouring pond, add the alkali aluminium of 0.05-0.08kg/T ferrous sulfate and 0.02-0.03kg/T, the reaction times is 3-4 hour;
(4) high-frequency pulse producer electrolysis dyeing waste water is used, the gap pulses such as employing, surge generator interval time: 3min-4min;
(5) add the active sludge containing efficient alkaline-resisting decomposer in anaerobic hydrolysis acidification tank after, dyeing waste water is entered anaerobic hydrolysis acidification tank, add the starch of 5-10% urea and 1-2% to anaerobic hydrolysis acidification tank simultaneously, efficient alkaline-resisting decomposer in active sludge and the pollutent in dyeing waste water occur to be hydrolyzed and acidification reaction, generate methane and carbon dioxide, reaction 8-12 hour;
(6) add aerobic particle mud to Aerobic Pond and dyeing waste water is entered Aerobic Pond 6-8 hour;
(7) dyeing waste water after step (6) is introduced settling tank 3-4 hour, the mud that process produces all is back in anaerobic hydrolysis acidification tank;
(8) dyeing waste water after step (7) is introduced sand filter filtration and flow into oxidation pond after 1-2 hour, discharge after 40-50 hour.
As a modification of the present invention, described step (1) dyeing waste water enters thickness two-stage grid filtration.
As a modification of the present invention, described step (2) equalizing tank built with 2 under water impeller be used for blast aeration.
As a modification of the present invention, in described step (2) equalizing tank, add the polydimethylsiloxane froth breaking of 0.5-0.8%.
As a modification of the present invention, described step (5) anaerobic hydrolysis acidification tank is built with 1 impeller under water.
As a modification of the present invention, in described step (6) Aerobic Pond, micro porous aeration head is installed.
Step of the present invention (1) adopts grid filtration, removes suspended solids larger in dyeing waste water by grid interception, adopts thickness two-stage grid filtration, can remove most of suspended substance in dyeing waste water, protection water pump and follow-up piping system not blocked.
Step of the present invention (2) equalizing tank can preliminary sedimentation, the impurity be separated in waste water, and regulating water quality, enables water quality balanced, be conducive to next process, regulating pondage: if water inlet is not at the uniform velocity, this pond just can regulate; Neutralizing acid basicity, it is best that pH value is adjusted to 8.5-9 effect when next step decolours, equalizing tank built with 2 under water impeller be used for blast aeration, oxidation operation in waste water is decomposed, first reduction COD value, can produce a large amount of bubble in aeration process, adds the defoamer of the polydimethylsiloxane of 0.5-0.8%, stabilizing solution, for subsequent disposal provides stable condition.
Step of the present invention (3) adds the alkali aluminium of 0.05-0.08kg/T ferrous sulfate and 0.02-0.03kg/T, and waste water decoloring and flocculation reaction complete simultaneously, can reduce the COD value in waste water simultaneously and remove SS pollutent.
Step of the present invention (4) adopts high-frequency pulse producer electrolysis dyeing waste water, Deng gap pulse, with the high-frequency pulse electrolytic process of power supply-power-off-power supply, electrolytic efficiency is improved significantly, electric current in electrolyzer is that ion is formed in electric field action current downflow, in power-on time, ionic concn can reduce rapidly; And within power-off off time, ionic concn can be recovered rapidly and be supplemented again, so current density increases than the current density under direct current supply under pulse power supply mode, this just makes electrolytic decontaminating effect strengthen, and the frequency of high-frequency impulse then can up to 30 kilo hertzs.
Described acidication refers to that waste water flows into hydrolysis acidification pool, the acidication effect in anaerobic reaction process is utilized in anaerobic hydrolysis acidification tank, some very poor for biodegradability in waste water polymer substance and insoluble substance are passed through acidication, be degraded to small-molecule substance and soluble substance, improve biodegradability and BOD
5/ COD
crvalue, for follow-up aerobic treatment creates conditions, is provided with 1 impeller under water in anaerobic hydrolysis acidification tank, ensures that anaerobion can fully contact with waste water, even water quality.
Aerobic treatment removes organic key link in waste water, after the process of aerobic treatment method, in waste water, organic content will significantly reduce, in Aerobic Pond, micro porous aeration head is installed, the organism that aerobic bacteria is obtained in enough oxygen utilization waste water carries out metabolism, remove the pollution substance in water, aeration also can make waste water fully contact with microorganism, ensures the clearance of pollutent.
The mud that step of the present invention (7) process produces all is back in anaerobic hydrolysis acidification tank, because mud has enough residence time (8h-12h) in anaerobic biological section, anaerobic digestion thoroughly can be carried out, make whole system there is no excess sludge discharge, namely reach the sludge balance of self.
Step of the present invention (8) is crossed through sand filter and is filtered tiny suspended substance, flow into oxidation pond, oxidation pond is a kind of biological treatment structures utilizing water body self-purification ability to purify waste water, mainly utilize the organic pollutant in the effect process water of helotism, organic matter degradation in water is become carbonic acid gas and water by the different oxygen type bacterium in the pool, consumes the dissolved oxygen in water simultaneously; Algae in the pool then utilizes sun power to carry out photosynthesis, with the carbon in carbonic acid gas for raw material, synthesizes the organism of self and discharges oxygen, and waste water, through the stabilizing treatment of oxidation pond, can guarantee qualified discharge.
Utilize of the present invention to be a kind ofly respectively without the water-quality guideline after the printing-dyeing waste water treatment process process of mud: pH value is 6-7, COD
cr84mg/L, BOD
546mg/L, SS suspended substance is 16mg/L, colourity 35, BOD
5/ COD
crdecline obviously, reach national sewage comprehensive emission standard (GB8798-96) first discharge standard.
The invention has the beneficial effects as follows:
A kind of printing-dyeing waste water treatment process without mud of the present invention, treatment process is simple, and link is compact, easy and simple to handle, after single precipitation, COD clearance can reach more than 70%, BOD clearance about 40%, water quality after process is high, can meet and produce the requirement of reuse water, as further advanced treatment then can reuse, there is no outer blowdown mud, do not find mud excessive increase in anaerobic biological pond, this technique is without the need to repeatedly precipitating, and step is few, greatly cost-saving, raise the efficiency.
Embodiment
Embodiment:
Before process, the pH value of waste water is 12, COD2550, BOD400, SS suspended substance is 500, colourity 1200.
Without a printing-dyeing waste water treatment process for mud, it is characterized in that: comprise the following steps:
(1) dyeing waste water enters thickness two-stage grid filtration;
(2) the dyeing waste water pump after step (1) is squeezed into equalizing tank, add acid or pH value is adjusted to 9 by alkaline solution, dyeing waste water time in equalizing tank is 10h, equalizing tank built with 2 under water impeller be used for blast aeration, add the polydimethylsiloxane froth breaking of 0.8%;
(3) dyeing waste water after step (2) is introduced decolouring pond, add the alkali aluminium of 0.06kg/T ferrous sulfate and 0.03kg/T, the reaction times is 4 hours;
(4) high-frequency pulse producer electrolysis dyeing waste water is used, the gap pulses such as employing, surge generator interval time: 4min;
(5) add the active sludge containing efficient alkaline-resisting decomposer in anaerobic hydrolysis acidification tank after, dyeing waste water is entered anaerobic hydrolysis acidification tank, add the starch of 8% urea and 2% to anaerobic hydrolysis acidification tank simultaneously, anaerobic hydrolysis acidification tank is built with 1 impeller under water, efficient alkaline-resisting decomposer in active sludge and the pollutent in dyeing waste water occur to be hydrolyzed and acidification reaction, generate methane and carbon dioxide, react 12 hours;
(6) add aerobic particle mud to Aerobic Pond and dyeing waste water is entered Aerobic Pond 8 hours, in Aerobic Pond, micro porous aeration head is installed;
(7) dyeing waste water after step (6) is introduced settling tank 4 hours, the mud that process produces all is back in anaerobic hydrolysis acidification tank;
(8) flow into oxidation pond after the dyeing waste water introducing sand filter after step (7) being filtered 1 hour, discharge after 50 hours.
The reuse water finally obtained, in water, indices is respectively: pH value is 6-7, COD
cr84mg/L, BOD
546mg/L, SS suspended substance is 16mg/L, colourity 35, BOD
5/ COD
crdecline obviously, reach national sewage comprehensive emission standard (GB8798-96) first discharge standard.
Technique means disclosed in the present invention program is not limited only to the technique means disclosed in above-mentioned embodiment, also comprises the technical scheme be made up of above technical characteristic arbitrary combination.
Claims (6)
1. without a printing-dyeing waste water treatment process for mud, it is characterized in that: comprise the following steps:
(1) dyeing waste water enters grid filtration;
(2) the dyeing waste water pump after step (1) is squeezed into equalizing tank, add acid or pH value is adjusted to 8.5-9 by alkaline solution, dyeing waste water time in equalizing tank is 6h-12h;
(3) dyeing waste water after step (2) is introduced decolouring pond, add the alkali aluminium of 0.05-0.08kg/T ferrous sulfate and 0.02-0.03kg/T, the reaction times is 3-4 hour;
(4) high-frequency pulse producer electrolysis dyeing waste water is used, the gap pulses such as employing, surge generator interval time: 3min-4min;
(5) add the active sludge containing efficient alkaline-resisting decomposer in anaerobic hydrolysis acidification tank after, dyeing waste water is entered anaerobic hydrolysis acidification tank, add the starch of 5-10% urea and 1-2% to anaerobic hydrolysis acidification tank simultaneously, efficient alkaline-resisting decomposer in active sludge and the pollutent in dyeing waste water occur to be hydrolyzed and acidification reaction, generate methane and carbon dioxide, reaction 8-12 hour;
(6) add aerobic particle mud to Aerobic Pond and dyeing waste water is entered Aerobic Pond 6-8 hour;
(7) dyeing waste water after step (6) is introduced settling tank 3-4 hour, the mud that process produces all is back in anaerobic hydrolysis acidification tank;
(8) dyeing waste water after step (7) is introduced sand filter filtration and flow into oxidation pond after 1-2 hour, discharge after 40-50 hour.
2. a kind of printing-dyeing waste water treatment process without mud according to claim 1, is characterized in that: described step (1) dyeing waste water enters thickness two-stage grid filtration.
3. a kind of printing-dyeing waste water treatment process without mud according to claim 1, is characterized in that: described step (2) equalizing tank built with 2 under water impeller be used for blast aeration.
4. a kind of printing-dyeing waste water treatment process without mud according to claim 1, is characterized in that: the polydimethylsiloxane froth breaking adding 0.5-0.8% in described step (2) equalizing tank.
5. a kind of printing-dyeing waste water treatment process without mud according to claim 1, is characterized in that: described step (5) anaerobic hydrolysis acidification tank is built with 1 impeller under water.
6. a kind of printing-dyeing waste water treatment process without mud according to claim 1, is characterized in that: install micro porous aeration head in described step (6) Aerobic Pond.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410222543.8A CN103992008B (en) | 2014-05-26 | 2014-05-26 | A kind of printing-dyeing waste water treatment process without mud |
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| CN201410222543.8A CN103992008B (en) | 2014-05-26 | 2014-05-26 | A kind of printing-dyeing waste water treatment process without mud |
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| CN103992008A CN103992008A (en) | 2014-08-20 |
| CN103992008B true CN103992008B (en) | 2016-04-20 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104743737B (en) * | 2014-11-28 | 2017-01-04 | 广州新滔水质净化有限公司 | Treatment method of industrial printing and dyeing wastewater |
| CN104478174B (en) * | 2014-12-19 | 2016-06-29 | 新疆环境工程技术有限责任公司 | High saliferous treatment of dyeing wastewater reuse zero-emission integrated approach |
| CN104724892A (en) * | 2015-03-30 | 2015-06-24 | 湖州华鼎贸易有限公司 | Treatment method of acidic dye industrial wastewater |
| CN105136943B (en) * | 2015-06-18 | 2017-04-19 | 浙江省环境保护科学设计研究院 | Pretreatment method for qualitative analysis of printing and dyeing wastewater composition |
| CN105036460A (en) * | 2015-06-30 | 2015-11-11 | 南阳理工学院 | Chemical plant wastewater treatment control system and method |
| CN105399254A (en) * | 2015-12-19 | 2016-03-16 | 张家港市振新印染有限公司 | Treatment method of printing and dyeing wastewater |
| CN105776732A (en) * | 2016-02-19 | 2016-07-20 | 浙江清环保工程有限公司 | Enhanced nitrogen and phosphorus removal device and technology for sewage |
| CN106396292A (en) * | 2016-12-01 | 2017-02-15 | 苟亚松 | Printing and dyeing wastewater treating system |
| CN107352707A (en) * | 2017-09-22 | 2017-11-17 | 河北工程大学 | A kind of river sewage processing unit |
| CN112408695A (en) * | 2020-10-22 | 2021-02-26 | 苏州创之杰环保设备工程有限公司 | Device and method for advanced treatment of printing and dyeing wastewater |
| CN115228228A (en) * | 2022-06-24 | 2022-10-25 | 江水 | Circulating industrial waste gas treatment process |
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