CN105776726A - Treatment process of printing and dyeing wastewater in textile industry - Google Patents
Treatment process of printing and dyeing wastewater in textile industry Download PDFInfo
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- CN105776726A CN105776726A CN201410800316.9A CN201410800316A CN105776726A CN 105776726 A CN105776726 A CN 105776726A CN 201410800316 A CN201410800316 A CN 201410800316A CN 105776726 A CN105776726 A CN 105776726A
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a treatment process of printing and dyeing wastewater in the textile industry.The process includes the following steps of firstly, primary settling, wherein the printing and dyeing wastewater passes through a grid to remove large-particle impurity precipitate and is then transferred into a primary settling tank, a microbial flocculant is added, and the mixture is fed into a spiral settling separator through a screw pump for solid-liquid separation; secondly, secondary settling, wherein the pH value of clear liquid obtained after separation is regulated to be 7-8, the clear liquid passes through a bio-membrane reactor after being subjected to aeration treatment and then enters a secondary settling tank, a coagulant is added, and decoloration treatment is carried out with activated carbon fibers after complete flocculation; thirdly, ultrafiltration treatment, the clear liquid passes through an ultrafiltration membrane after suspended matter is removed from air-dissolved water, the filtered clear liquid is transferred into a clean water tank, and the clean water can serve as domestic drinking water.By means of the wastewater treatment process, the wastewater generated by printing and dyeing in the textile industry can be effectively treated, the treatment efficiency is high, the decoloration effect is good, the COD value of the wastewater is effectively reduced, and secondary pollution is avoided.
Description
Technical field
The invention belongs to technical field of sewage, relate to technology for treating industrial waste water, more particularly to the process technique of a kind of textile industry dyeing waste water.
Background technology
Textile printing and dyeing wastewater has the features such as the water yield is big, organic pollution content is high, alkalescence is big, change of water quality is big, belongs to one of intractable industrial wastewater, containing dyestuff, slurry, auxiliary agent, oil preparation, soda acid, fiber impurity, sand class material, inorganic salt etc. in waste water.The processing method that physico-chemical process, biochemical process, chemical method and several technique combines is had for the main method for the treatment of of dyeing wastewater.
Patent of invention CN104016527A discloses a kind of textile printing and dyeing sewage water treatment method, concretely comprising the following steps of the method: textile printing and dyeing wastewater passes into filter, filters, and collects filtrate, described filtrate is proceeded in cleaner unit and carry out smoke abatement and dust control process；Proceed to reaction tank, add flocculant, stirring, stand, filter；Add sodium hypochlorite and carry out desolventing technology, become colorless to textile printing and dyeing wastewater；Carry out reverse-osmosis treated by reverse osmosis membrane, qualified textile printing and dyeing wastewater is directly discharged.The method technique is simple, and decolorizing effect is bad, processes imperfection.
Patent of invention CN101549940B discloses a kind of technique for the treatment of textile dyeing waste water, the method comprehensive physical, chemistry, bioremediation, waste water is respectively adopted and removes rubbish precipitation, regulate pH value, fade, precipitate particle, the organic bulky grain of anaerobic decay, mix and blend, aerobic breakdown, precipitation activated sludge flocks body, decompose residual organic substances, remove the process of the multiprogramming such as float, filtration, dyeing waste water is had good treatment effect by this technique, but operation is loaded down with trivial details.
Summary of the invention
It is an object of the invention to provide the process technique of a kind of textile industry dyeing waste water, this technological operation is simple, stable, good decolorizing effect, effectively reduces COD value of waste water, does not result in secondary pollution.
To achieve these goals, the present invention is achieved by the following technical solutions:
The process technique of a kind of textile industry dyeing waste water, comprises the following steps:
(1) primary settling: by grid, dyeing waste water is removed large granular impurity precipitation, proceeds to one-level Sedimentation tank, add microbial flocculant, sends into screw settling seperator by screw pump and carries out solid-liquid separation；
(2) secondary sedimentation: the clear liquid pH value after separation is adjusted to 7-8, by biofilm reactor after Air Exposure, enters two grades of Sedimentation tanks, adds coagulant, after flocculation completely, use NACF desolventing technology；
(3) hyperfiltration treatment: dissolved air water is removed after float, clear liquid passes through ultrafilter membrane, proceeds to clear water reserviors after filtration, and clear water can as Drinking Water.
Described microbial flocculant is Pullulan.
Described coagulant is the polymer of chitin and acrylamide.
Described screw settling seperator is butterfly screw settling seperator.
Beneficial effects of the present invention: the waste water treatment process of the present invention can effectively process the waste water that textile industry printing and dyeing produce, and treatment effeciency is high, and good decolorizing effect effectively reduces COD value of waste water, do not result in secondary pollution.
Detailed description of the invention
The present invention is expanded on further in conjunction with the embodiments, does not constitute and the scope of the present invention is limited.
Embodiment 1
The process technique of a kind of textile industry dyeing waste water, comprises the following steps:
(1) primary settling: by grid, dyeing waste water is removed large granular impurity precipitation, proceeds to one-level Sedimentation tank, add microbial flocculant Pullulan, flocculate 4h, sends into butterfly screw settling seperator by screw pump and carries out solid-liquid separation；
(2) secondary sedimentation: the clear liquid pH value after separation is adjusted to 7-8, by biofilm reactor after Air Exposure 1.5h, enters two grades of Sedimentation tanks, adds the polymerization coagulant of chitin and acrylamide, after flocculation completely, with NACF desolventing technology 1h；
(3) hyperfiltration treatment: dissolved air water is removed after float, clear liquid passes through ultrafilter membrane, proceeds to clear water reserviors after filtration, and clear water can as Drinking Water.
Embodiment 2
The process technique of a kind of textile industry dyeing waste water, comprises the following steps:
(1) primary settling: by grid, dyeing waste water is removed large granular impurity precipitation, proceeds to one-level Sedimentation tank, add microbial flocculant Pullulan, flocculate 5h, sends into butterfly screw settling seperator by screw pump and carries out solid-liquid separation；
(2) secondary sedimentation: the clear liquid pH value after separation is adjusted to 7-8, by biofilm reactor after Air Exposure 0.5h, enters two grades of Sedimentation tanks, adds the polymerization coagulant of chitin and acrylamide, after flocculation completely, with NACF desolventing technology 0.5h；
(3) hyperfiltration treatment: dissolved air water is removed after float, clear liquid passes through ultrafilter membrane, proceeds to clear water reserviors after filtration, and clear water can as Drinking Water.
Embodiment 3
The process technique of a kind of textile industry dyeing waste water, comprises the following steps:
(1) primary settling: by grid, dyeing waste water is removed large granular impurity precipitation, proceeds to one-level Sedimentation tank, add microbial flocculant Pullulan, flocculate 4.5h, sends into butterfly screw settling seperator by screw pump and carries out solid-liquid separation；
(2) secondary sedimentation: the clear liquid pH value after separation is adjusted to 7-8, by biofilm reactor after Air Exposure 1h, enters two grades of Sedimentation tanks, adds the polymerization coagulant of chitin and acrylamide, after flocculation completely, with NACF desolventing technology 1h；
(3) hyperfiltration treatment: dissolved air water is removed after float, clear liquid passes through ultrafilter membrane, proceeds to clear water reserviors after filtration, and clear water can as Drinking Water.
Claims (4)
1. the process technique of a textile industry dyeing waste water, it is characterised in that: comprise the following steps:
(1) primary settling: by grid, dyeing waste water is removed large granular impurity precipitation, proceeds to one-level Sedimentation tank, add microbial flocculant, sends into screw settling seperator by screw pump and carries out solid-liquid separation；
(2) secondary sedimentation: the clear liquid pH value after separation is adjusted to 7-8, by biofilm reactor after Air Exposure, enters two grades of Sedimentation tanks, adds coagulant, after flocculation completely, use NACF desolventing technology；
(3) hyperfiltration treatment: dissolved air water is removed after float, clear liquid passes through ultrafilter membrane, proceeds to clear water reserviors after filtration, and clear water can as Drinking Water.
2. the process technique of a kind of textile industry dyeing waste water as claimed in claim 1, it is characterised in that: described microbial flocculant is Pullulan.
3. the process technique of a kind of textile industry dyeing waste water as claimed in claim 1, it is characterised in that: described coagulant is the polymer of chitin and acrylamide.
4. the process technique of a kind of textile industry dyeing waste water as claimed in claim 1, it is characterised in that: described screw settling seperator is butterfly screw settling seperator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800316.9A CN105776726A (en) | 2014-12-18 | 2014-12-18 | Treatment process of printing and dyeing wastewater in textile industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410800316.9A CN105776726A (en) | 2014-12-18 | 2014-12-18 | Treatment process of printing and dyeing wastewater in textile industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105776726A true CN105776726A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410800316.9A Pending CN105776726A (en) | 2014-12-18 | 2014-12-18 | Treatment process of printing and dyeing wastewater in textile industry |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459162A (en) * | 2017-07-27 | 2017-12-12 | 张家港市双盈印染有限公司 | A kind of method that dyeing and printing sewage is handled using decolorising agent |
| CN107721093A (en) * | 2017-11-24 | 2018-02-23 | 吉林省农业科学院 | A kind of intensive culture sewage plural serial stage handling process |
| CN108625076A (en) * | 2018-03-26 | 2018-10-09 | 安徽回车服装有限公司 | A kind of textile decoloration process |
| CN110697990A (en) * | 2019-10-28 | 2020-01-17 | 深圳德蓝生态环境有限公司 | Method for purifying sewage and reducing suspended matters in water body |
| CN110759599A (en) * | 2019-11-14 | 2020-02-07 | 福建省新宏港纺织科技有限公司 | Energy-saving treatment process for textile printing and dyeing wastewater |
| CN111892234A (en) * | 2020-06-12 | 2020-11-06 | 柳州市盛杰彩印有限公司 | Microbial fermentation treatment process for fountain solution waste liquid |
-
2014
- 2014-12-18 CN CN201410800316.9A patent/CN105776726A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459162A (en) * | 2017-07-27 | 2017-12-12 | 张家港市双盈印染有限公司 | A kind of method that dyeing and printing sewage is handled using decolorising agent |
| CN107721093A (en) * | 2017-11-24 | 2018-02-23 | 吉林省农业科学院 | A kind of intensive culture sewage plural serial stage handling process |
| CN108625076A (en) * | 2018-03-26 | 2018-10-09 | 安徽回车服装有限公司 | A kind of textile decoloration process |
| CN110697990A (en) * | 2019-10-28 | 2020-01-17 | 深圳德蓝生态环境有限公司 | Method for purifying sewage and reducing suspended matters in water body |
| CN110759599A (en) * | 2019-11-14 | 2020-02-07 | 福建省新宏港纺织科技有限公司 | Energy-saving treatment process for textile printing and dyeing wastewater |
| CN110759599B (en) * | 2019-11-14 | 2022-04-15 | 福建省新宏港纺织科技有限公司 | Energy-saving treatment process for textile printing and dyeing wastewater |
| CN111892234A (en) * | 2020-06-12 | 2020-11-06 | 柳州市盛杰彩印有限公司 | Microbial fermentation treatment process for fountain solution waste liquid |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
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| WD01 | Invention patent application deemed withdrawn after publication |