CN101058469A - supplementary decoloration process for dye-containing waste water - Google Patents
supplementary decoloration process for dye-containing waste water Download PDFInfo
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- CN101058469A CN101058469A CNA2007100090224A CN200710009022A CN101058469A CN 101058469 A CN101058469 A CN 101058469A CN A2007100090224 A CNA2007100090224 A CN A2007100090224A CN 200710009022 A CN200710009022 A CN 200710009022A CN 101058469 A CN101058469 A CN 101058469A
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Abstract
The invention discloses a supplementing decoloring technique of waste water with dye, which comprises the following steps: reserving alkali solution and acid solution of sodium dithionite in the seal container separately; blending the waste water with dye and alkali solution of sodium dithionite under high-speed stirring condition; leading the acid solution to neutrallize the waste water with dye; supplementing the decoloring; bubbling the decolored water through aerating pipe; oxidizing the excessive reduced material; placing the seal container and aerating pipe in the water outlet canal of waste water with dye. The invention reduces cost without changing the present equipment, which is benefit to recycle the waste water directly.
Description
Technical field
The present invention relates to a kind of supplementary decoloration process of waste water containing dye.
Background technology
Body factory in the dye well dyestuff, to bleaching and dyeing industry be a light industry that is in the pillar status in China.The textile printing and dyeing dyeing waste-water, the water yield is big, the colourity height, complicated component contains dyestuff, slurry, auxiliary agent, acid, alkali, fiber impurity and inorganic salt etc. in the waste water.Common decoloring method has biochemical decolouring, and (cost is the cheapest, but can't decolour to dyestuff with bio-toxicity), oxidative decoloration (effect is better, and decolorization rate is slower), reduction-decolor (as containing unsaturated link(age), the dyestuff of aldehyde radical has good especially decolorizing effect to dyestuff with bio-toxicity).Present most printing and dyeing mills adopt biochemical processing method, promptly adopt microbial method degrade conventional dye molecule and organism, discharging of flocculation sediment after-filtration or reuse then.Through then using the Nac10 oxidation style usually, Fe as if difficulty decolouring materials such as having reactive dyestuffs after the biochemical treatment
2+/ H
2O
2Oxidation style, iron carbon bed supplementary decoloration, thus it is up to standard that waste discharge colourity is able to, and perhaps reclaims and use.
Existing decoloration process processing cost height, speed of response is slow, therefore needs other set handling equipment and place, and cost of investment is bigger; And residual after handling as hypochlorite, materials such as iron ion seriously disturb the waste water recycling effect.The enterprise that abroad has uses NaBH
4Reduction method is carried out waste water decoloring in attached place, and effect is fine and decolouring back waste water recycling is convenient, but NaBH
4Cost an arm and a leg (price is greatly about 180 yuan/kilogram), can't obtain promoting.Common cheap strong reducing substance such as rongalite are because of there being strong toxicity, and general SODIUM HYDROSULPHITE sodium water solution is extremely unstable, do not find application in the waste water containing dye decolouring as yet.In addition, in the practical application during reduction-decolor excess drug to remove problem also still unresolved.
Summary of the invention
But the purpose of this invention is to provide a kind of cost low, do not need equipment to existing operation to change and the supplementary decoloration process of the waste water containing dye of waste water direct reuse.
Technical scheme of the present invention is such: the supplementary decoloration process of waste water containing dye, be achieved by the following scheme: be stored in the V-Brite B basic solution and the acid solution that have good stability in the sealed vessel respectively, under the condition of high-speed stirring, waste water containing dye and above-mentioned V-Brite B basic solution are mixed, introduce above-mentioned acid solution again and will carry out supplementary decoloration in the alkali and to waste water containing dye, water after the decolouring plays the air-blowing effect through aerated conduit, by air excessive reducing substances oxidation.
Above-mentioned sealed vessel pipe connecting road junction and aerated conduit are arranged at going out in the water channel of discharging waste water containing dye.
Above-mentioned bleaching time is 5-30 second.
The weight percent concentration of above-mentioned V-Brite B basic solution is 5-20%, and pH value is 10-13, and consumption is regulated according to chroma in waste water, for the 1.5-8 of bleaching coloured matter theory consumption doubly.
Above-mentioned air consumption is 1.5-8 a times of the theoretical consumption of V-Brite B that oxidation adds.
The pH value of above-mentioned acid solution is 1-3.
After adopting such scheme, the supplementary decoloration process of waste water containing dye of the present invention compared with prior art, has following advantage: 1. this technology cost is starkly lower than NaBH
4Reduction method.2. this technology use that is particularly useful for connecting with common biological decolouring method, the discharge of wastewater canal that characteristics are mounted in after the processing decolours as a supplement, the different not additional in addition decolouring ponds that are with traditional decoloration process, do not need the equipment of existing operation is changed, help on existing sewage treatment equipment basis, extensively promoting.3. by not introducing colored ion such as iron ion etc. after this technology decolouring, water hardness does not also change, and helps the waste water direct reuse.
Embodiment
Embodiment one:
The supplementary decoloration process of waste water containing dye of the present invention, realize as follows:
One, with V-Brite B, yellow soda ash and water be mixed with that pH value is 12, the weight percentage of V-Brite B is 10% alkaline SODIUM HYDROSULPHITE sodium solution, the secluding air that goes out in the plastic containers in the water channel that is arranged at discharge water at the pipe connecting road junction is preserved.To be mixed with pH value be 2 sulphuric acid soln preserves with another container that goes out in the water channel that also is the pipe connecting road junction is arranged at discharge water with sulfuric acid and water.
Two, use many paddle stirrers tool with the alkaline SODIUM HYDROSULPHITE sodium solution of step 1 preparation with through (colourity 60 degree of the printing and dyeing colorful wastewater behind the sand filter, mainly containing colour content is reactive brilliant red X-3, light yellow BES mixture) short mix forms mixing water, it is 6-9 that an amount of sulphuric acid soln of introducing step 1 preparation again is stirred to the PH that in this mixing water alkali is neutralized to waste water, this moment, V-Brite B decoloured reactive dyestuffs rapidly, remaining colourity 19 degree, about 15 seconds of bleaching time, the V-Brite B consumption is 0.005% of a waste water weight.Decolouring waste water is through being arranged at the aerated conduit aeration in the water channel of of discharge water, and the air consumption is 8 times of the theoretical consumption of V-Brite B that oxidation adds, and the COD and the colourity of waste water are all up to standard after the decolouring, can reuse as bath water.This technology directly is installed at the householder method of decolouring as a supplement in the water channel that of discharge water.
Embodiment two:
The supplementary decoloration process of waste water containing dye of the present invention, realize as follows:
One, with V-Brite B, urao and water be mixed with that pH value is 10, the weight percentage of V-Brite B is 15% alkaline SODIUM HYDROSULPHITE sodium solution, the secluding air that goes out in the plastic containers in the water channel that is arranged at discharge water at the pipe connecting road junction is preserved.To be mixed with pH value be 1 sulphuric acid soln preserves with another container that goes out in the water channel that also is the pipe connecting road junction is arranged at discharge water with sulfuric acid and water.
Two, use many paddle stirrers tool with the alkaline SODIUM HYDROSULPHITE sodium solution of step 1 preparation with through (colourity 83 degree of the dye processing plant waste water from dyestuff behind the sand filter, colored component is reactive black KN-B, reactive brilliant yellow B-4GLN mixture) short mix forms mixing water, wherein, the consumption of alkalescence V-Brite B is 0.007% of a waste water weight, the an amount of sulphuric acid soln of introducing the step 1 preparation again is stirred in this mixing water alkali is neutralized, make waste water PH be adjusted to 6-9, this moment, V-Brite B decoloured reactive dyestuffs rapidly, remaining colourity 26 degree, about 15 seconds of bleaching time.Decolouring waste water is through being arranged at the aerated conduit aeration in the water channel of of discharge water, and the air consumption is 7 times of the theoretical consumption of V-Brite B that oxidation adds, and the COD and the colourity of waste water are all up to standard after the decolouring, can reuse as bath water.This technology directly is installed at the householder method of decolouring as a supplement in the water channel that of discharge water.
Claims (6)
1, the supplementary decoloration process of waste water containing dye, it is characterized in that: be achieved by the following scheme: be stored in the V-Brite B basic solution and the acid solution that have good stability in the sealed vessel respectively, under the condition of high-speed stirring, waste water containing dye and above-mentioned V-Brite B basic solution are mixed, introduce above-mentioned acid solution again and will carry out supplementary decoloration in the alkali and to waste water containing dye, water after the decolouring plays the air-blowing effect through aerated conduit, by air excessive reducing substances oxidation.
2, the supplementary decoloration process of waste water containing dye according to claim 1 is characterized in that: above-mentioned sealed vessel pipe connecting road junction and aerated conduit are arranged at going out in the water channel of discharging waste water containing dye.
3, the supplementary decoloration process of waste water containing dye according to claim 1 is characterized in that: above-mentioned bleaching time is 5-30 second.
4, the supplementary decoloration process of waste water containing dye according to claim 1, it is characterized in that: the weight percent concentration of above-mentioned V-Brite B basic solution is 5-20%, pH value is 10-13, and consumption is regulated according to chroma in waste water, for the 1.5-8 of bleaching coloured matter theory consumption doubly.
5, the supplementary decoloration process of waste water containing dye according to claim 1 is characterized in that: above-mentioned air consumption is 1.5-8 a times of the theoretical consumption of V-Brite B that oxidation adds.
6, the supplementary decoloration process of waste water containing dye according to claim 1 is characterized in that: the pH value of above-mentioned acid solution is 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710009022A CN100588627C (en) | 2007-05-23 | 2007-05-23 | supplementary decoloration process for dye-containing waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710009022A CN100588627C (en) | 2007-05-23 | 2007-05-23 | supplementary decoloration process for dye-containing waste water |
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| Publication Number | Publication Date |
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| CN101058469A true CN101058469A (en) | 2007-10-24 |
| CN100588627C CN100588627C (en) | 2010-02-10 |
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| CN200710009022A Expired - Fee Related CN100588627C (en) | 2007-05-23 | 2007-05-23 | supplementary decoloration process for dye-containing waste water |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955303A (en) * | 2010-09-29 | 2011-01-26 | 邹海明 | Treatment method of dye wastewater |
| CN104098170A (en) * | 2014-07-17 | 2014-10-15 | 浙江海拓环境技术有限公司 | Decoloration method and system for electroplating wastewater |
| CN105271567A (en) * | 2015-09-30 | 2016-01-27 | 河南中源化学股份有限公司 | Trona original brine turbidity removal and decolorizing treatment method |
| CN106167313A (en) * | 2016-08-18 | 2016-11-30 | 紫金矿业集团股份有限公司 | A kind of discoloration method of electroplating wastewater |
-
2007
- 2007-05-23 CN CN200710009022A patent/CN100588627C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955303A (en) * | 2010-09-29 | 2011-01-26 | 邹海明 | Treatment method of dye wastewater |
| CN101955303B (en) * | 2010-09-29 | 2012-01-11 | 邹海明 | Treatment method of dye wastewater |
| CN104098170A (en) * | 2014-07-17 | 2014-10-15 | 浙江海拓环境技术有限公司 | Decoloration method and system for electroplating wastewater |
| CN104098170B (en) * | 2014-07-17 | 2015-10-28 | 浙江海拓环境技术有限公司 | A kind of decoloring method of electroplating wastewater and system |
| CN105271567A (en) * | 2015-09-30 | 2016-01-27 | 河南中源化学股份有限公司 | Trona original brine turbidity removal and decolorizing treatment method |
| CN105271567B (en) * | 2015-09-30 | 2019-05-21 | 河南中源化学股份有限公司 | A kind of trona original brine turbidity removal decoloration treatment method |
| CN106167313A (en) * | 2016-08-18 | 2016-11-30 | 紫金矿业集团股份有限公司 | A kind of discoloration method of electroplating wastewater |
| CN106167313B (en) * | 2016-08-18 | 2019-04-12 | 紫金矿业集团股份有限公司 | A kind of discoloration method of electroplating wastewater |
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| Publication number | Publication date |
|---|---|
| CN100588627C (en) | 2010-02-10 |
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