CN104071920B - Printing-dyeing waste water treatment process - Google Patents
Printing-dyeing waste water treatment process Download PDFInfo
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- CN104071920B CN104071920B CN201410291722.7A CN201410291722A CN104071920B CN 104071920 B CN104071920 B CN 104071920B CN 201410291722 A CN201410291722 A CN 201410291722A CN 104071920 B CN104071920 B CN 104071920B
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- waste water
- deoxidization
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Abstract
The present invention discloses a kind of printing-dyeing waste water treatment process, comprises the following steps: in waste water, add flocculating aids, filter after sewage flocculation, is filtered out by suspended substance wherein, remaining containing coloured fine suspension and solute; In the waste water after single filter, add reductibility discoloring agent, process direct dyeing waste water, make the dye molecule in waste water form deoxidization, degradation product; By the waste water containing deoxidization, degradation product by adsorptive, because adsorption makes the deoxidization, degradation product in waste water or other species adsorbs remove at solid surface; Poured into by water-insoluble organic solvent in the waste water after absorption, together shake, when two-phase laminated flow, just present colourless in aqueous phase, dyestuff is built up in upper organic phase; A certain amount of clear water is poured into by its concentration dilution in the waste water after extraction.The present invention has without the need to regulating waste water pH value, the advantage that effective and cost is low.
Description
Technical field
The present invention relates to a kind of printing-dyeing waste water treatment process.
Background technology
Since reform and opening-up, China's textile industry more and more develops, wherein dyeing development is also extremely rapid, throughput expands, but while output and the output value increase substantially, the development of dyeing is more and more subject to the restriction of resources and environment, printing and dyeing consume a large amount of water in producing, produce again a large amount of waste water simultaneously, this color degree of dyeing waste water is high, complicated component, can not directly discharge, intractability is very large, nowadays most of wastewater treatment mainly adopts biochemical method, treatment technology is single, and regulate and to need during the pH value of waste water to add acid solution or alkali lye adds cost, minority enterprise brings into use various types of reverse osmosis membrane to process waste water, treatment effect is good, but the investment of this type of film device is large, operation cost is also very high.
Summary of the invention
The object of the invention is to overcome above deficiency, providing a kind of without the need to regulating waste water pH value, the waste water treatment process that effective and cost is low.
Object of the present invention is achieved through the following technical solutions: a kind of printing-dyeing waste water treatment process, comprises the following steps:
A, single filter, introduce filtering basin by the waste water that printing and dyeing production plant is discharged, add flocculating aids, filter after sewage flocculation, filtered out by suspended substance wherein in waste water, remaining containing coloured fine suspension and solute;
B, reduction, add reductibility discoloring agent in the waste water after single filter, and process direct dyeing waste water, makes it to react with substantive dyestuff generation reduction-decolor wherein, thus make the dye molecule in waste water form deoxidization, degradation product;
C, absorption, by the waste water containing deoxidization, degradation product by adsorptive, because adsorption makes the deoxidization, degradation product in waste water or other species adsorbs remove at solid surface;
D, ion-pair extraction, pour into water-insoluble organic solvent in the waste water after absorption, together shake, and when two-phase laminated flow, just present colourless in aqueous phase, dyestuff is built up in upper organic phase;
, there is sodium salt and calcium salt in the waste water after extraction, in sewage, pour a certain amount of clear water into by its concentration dilution in E, dilution;
More excellent, what the reductibility discoloring agent in above-mentioned steps B adopted is iron filings or sulfur-bearing reductive agent and hydride initiator;
And the adsorptive in step C adopts the natural mineral such as ion exchange resin or wilkinite.
The present invention compared with prior art has the following advantages:
1, reduce, need not regulate the pH value of waste water, fast, percent of decolourization is high, simple to operate, can not bring secondary pollution for the reaction of reductibility discoloring agent;
2, adsorb, the ion exchange resin being used for doing adsorptive is cheap, efficiently, suit measures to local conditions, and do adsorptive with the hot mineral in the skies such as wilkinite, then there is physical adsorption and ion exchanging function, and specific surface is large, ion-exchange speed is fast, easy regeneration, has good decolorizing effect to unmanageable cationic dye wastewater;
3, extract, extraction process is simple, and energy consumption is low, and extraction agent is without the need to regeneration, can Reusability, cost-saving.
accompanying drawing illustrates:
Fig. 1 is art breading schema of the present invention;
Fig. 2 is specific embodiment of the invention example 1;
Number in the figure: 1-filtering basin, 2-flocculating aids, 3-reducing bath, 4-iron filings, 5-adsorber, 6-ion exchange resin, 7-extractor, 8-water-insoluble organic solvent, 9-stirring parts, 10-diluting tank, 11-water;
Fig. 3 is specific embodiment of the invention example 2.
Number in the figure: 1-filtering basin, 2-flocculating aids, 3-reducing bath, 4-sulfur-bearing reductive agent, 5-hydride initiator, 6-adsorber, 7-wilkinite, 8-extractor, 9-water-insoluble organic solvent, 10-stirring parts, 11-diluting tank, 12-water.
embodiment:
in order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment of the present invention Fig. 2 is a kind of embodiment of waste water treatment process, comprises the following steps:
The COD of the front waste water of process is 1740, BOD is 400.0, SS suspended substance is 460, colourity is 1000, waste water is injected in filtering basin 1, add flocculating aids 2, treat that flocculating aids 2 fully mixes in waste water and make waste water flocculating, through the filteration of filtering basin 1, leached by suspended substance wherein, remaining filtrate is mainly coloured solute and fine suspension, and through once filtering, the COD of the filtrate leached is 426, BOD is 251.0, SS suspended substance is 65, colourity is 105.
Filtrate after single filter is injected in reducing bath 3, add reductibility discoloring agent iron filings 4, iron filings 4 immerse in filtrate, form countless tiny microbattery, electrode reaction product is Fe2+, H2, OH-, there is higher chemical property, effectively can deviate from the dye molecule in filtrate, the COD of the filtrate after question response completes is 45, BOD is 21.0, SS suspended substance is 13, colourity is 30, and the wide material sources of iron filings 4, cheap, can for the scrap produced during mechanical workout, thus reach the object of waste recycling, but in this process, produce poisonous deoxidization, degradation product.
Filtrate after reduction is injected in adsorber 5, adsorptive in adsorber is ion exchange resin 6, ion exchange resin 6 specific surface area is large, ion-exchange speed is fast, and low price easily regenerates, the poisonous deoxidization, degradation product and dye molecule that produce in reducing bath 3 can be absorbed in efficiently, by the COD of filtrate after adsorber 5 be 15, BOD is 8.0, SS suspended substance is 4, colourity is 12.
Filtrate by adsorber 5 is introduced in extractor 7, add water-insoluble organic solvent 8, extractor 7 inner bottom part is provided with a stirring parts 9, stirring parts 9 operates, filtrate is stirred for some time together with water-insoluble organic solvent 8, treat that two-phase starts to be separated to stop stirring, gradually present colourless in aqueous phase, dyestuff is built up in upper organic phase, liquor C OD now in aqueous phase is 8, BOD is 3.0, SS suspended substance is 2, colourity is 1, the now indices of the filtrate standard to discharging up to standard, but inner sodium salt and calcium concentration larger.
In order to solve sodium salt and calcium concentration, the filtrate in aqueous phase being introduced diluting tank 10, adds water 11, sodium salt and calcium salt are diluted to suitable concn.
Embodiment of the present invention Fig. 3 is the another kind of embodiment of waste water treatment process, comprises the following steps:
The COD of the front waste water of process is 1740, BOD is 400.0, SS suspended substance is 460, colourity is 1000, waste water is injected in filtering basin 1, add flocculating aids 2, treat that flocculating aids 2 fully mixes in waste water and make waste water flocculating, through the filteration of filtering basin 1, leached by suspended substance wherein, remaining filtrate is mainly coloured solute and fine suspension, and through once filtering, the COD of the filtrate leached is 426, BOD is 251.0, SS suspended substance is 65, colourity is 105.
Filtrate after single filter is injected in reducing bath 3, add sulfur-bearing reductive agent 4 and hydride initiator 5, treat that they immerse in filtrate, reduction reaction of decolouring directly is there is with dye molecule, the COD of the filtrate after question response completes is 40, BOD is 18.0, SS suspended substance is 21, colourity is 27, but produces poisonous deoxidization, degradation product in this process.
Filtrate after reduction is injected in adsorber 6, adsorptive in adsorber 6 is wilkinite 7, wilkinite 7 ion-exchange speed is fast, the poisonous deoxidization, degradation product and dye molecule that produce in reducing bath 3 can be absorbed in efficiently, by the COD of filtrate after adsorber 5 be 13, BOD is 6.0, SS suspended substance is 6, colourity is 10.
Filtrate by adsorber 6 is introduced in extractor 8, add water-insoluble organic solvent 9, extractor 8 inner bottom part is provided with a stirring parts 10, stirring parts 10 operates, filtrate is stirred for some time together with water-insoluble organic solvent 9, treat that two-phase starts to be separated to stop stirring, gradually present colourless in aqueous phase, dyestuff is built up in upper organic phase, liquor C OD now in aqueous phase is 6, BOD is 2.0, SS suspended substance is 3, colourity is 1, the now indices of the filtrate standard to discharging up to standard, but inner sodium salt and calcium concentration larger.
In order to solve sodium salt and calcium concentration, the filtrate in aqueous phase being introduced diluting tank 11, adds water 12, sodium salt and calcium salt are diluted to suitable concn.
Claims (4)
1. a printing-dyeing waste water treatment process, is characterized in that: comprise the following steps:
A, single filter, add flocculating aids, filter after sewage flocculation in waste water, filtered out by suspended substance wherein, remaining containing coloured fine suspension and solute;
B, reduction, add reductibility discoloring agent in the waste water after single filter, and process direct dyeing waste water, makes it to react with substantive dyestuff generation reduction-decolor wherein, thus make the dye molecule in waste water form deoxidization, degradation product;
C, absorption, by the waste water containing deoxidization, degradation product by adsorptive, because adsorption makes the deoxidization, degradation product in waste water or other species adsorbs remove at solid surface;
D, ion-pair extraction, pour into water-insoluble organic solvent in the waste water after absorption, together shake, and when two-phase laminated flow, just present colourless in aqueous phase, dyestuff is built up in upper organic phase;
, there is sodium salt and calcium salt in the waste water after extraction, in sewage, pour a certain amount of clear water into by its concentration dilution in E, dilution.
2. printing-dyeing waste water treatment process according to claim 1, is characterized in that: what the reductibility discoloring agent in step B adopted is iron filings.
3. printing-dyeing waste water treatment process according to claim 1, is characterized in that: the adsorptive in step C adopts ion exchange resin or wilkinite.
4. printing-dyeing waste water treatment process according to claim 1, is characterized in that: what the reductibility discoloring agent in step B adopted is sulfur-bearing reductive agent and hydride initiator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410291722.7A CN104071920B (en) | 2014-08-07 | 2014-08-07 | Printing-dyeing waste water treatment process |
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| CN201410291722.7A CN104071920B (en) | 2014-08-07 | 2014-08-07 | Printing-dyeing waste water treatment process |
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| CN104071920A CN104071920A (en) | 2014-10-01 |
| CN104071920B true CN104071920B (en) | 2015-10-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105645617B (en) * | 2015-12-30 | 2017-06-30 | 中信环境技术（广州）有限公司 | A kind of dye wastewater treatment device and method |
| CN105984980A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass pretreatment technique |
| CN105984979A (en) * | 2016-06-28 | 2016-10-05 | 德清县新鑫达丝绸炼染有限公司 | Dyeing wastewater biomass treatment technique |
| CN107473490A (en) * | 2017-06-30 | 2017-12-15 | 芜湖富春染织股份有限公司 | A kind of scribbled modifying porcelain method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335274A (en) * | 2001-08-31 | 2002-02-13 | 天津市塘沽区鑫磊环保科技开发有限公司 | Treatment method of textile printing industry effluent |
| CN101386456A (en) * | 2008-10-24 | 2009-03-18 | 南京师范大学 | Processing method of dye wastewater or printing and dyeing wastewater |
| CN102863104A (en) * | 2012-10-28 | 2013-01-09 | 徐磊 | Printing and dyeing wastewater treatment process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006132519A1 (en) * | 2005-06-09 | 2006-12-14 | Jaime Raygoza Mora | Composition and method for the treatment of wastewater and sewage water in order to produce drinking water |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1335274A (en) * | 2001-08-31 | 2002-02-13 | 天津市塘沽区鑫磊环保科技开发有限公司 | Treatment method of textile printing industry effluent |
| CN101386456A (en) * | 2008-10-24 | 2009-03-18 | 南京师范大学 | Processing method of dye wastewater or printing and dyeing wastewater |
| CN102863104A (en) * | 2012-10-28 | 2013-01-09 | 徐磊 | Printing and dyeing wastewater treatment process |
Non-Patent Citations (1)
| Title |
|---|
| "染料废水处理技术的研究与进展";程云等;《环境污染治理技术与设备》;20030630;第4卷(第6期);摘要、第56页左栏第1行至59页右栏第25行 * |
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Inventor after: Zhang Bo Inventor after: Li Wangsheng Inventor after: Tang Guanghui Inventor before: Wang Jianbing |
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Effective date of registration: 20170210 Address after: 431600 New River Industrial Park, Hanchuan economic and Technological Development Zone, Hubei, China Patentee after: HUBEI CHUANDONG ENVIRONMENTAL PROTECTION ENERGY DEVELOPMENT CO., LTD. Address before: 226000 Zhabei village, Gangzha District, Jiangsu City, Nantong Province, China, five groups, Patentee before: Nan Tongrun opens Fashion Company Ltd |
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