CN102531226A - Method for treating acidic dye printing and dyeing wastewater - Google Patents
Method for treating acidic dye printing and dyeing wastewater Download PDFInfo
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- CN102531226A CN102531226A CN2011103207804A CN201110320780A CN102531226A CN 102531226 A CN102531226 A CN 102531226A CN 2011103207804 A CN2011103207804 A CN 2011103207804A CN 201110320780 A CN201110320780 A CN 201110320780A CN 102531226 A CN102531226 A CN 102531226A
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Abstract
The invention discloses a method for treating acidic dye printing and dyeing wastewater, which belongs to the field of wastewater treatment. The method comprises the steps of (1) filtering collected acidic printing and dyeing wastewater through a screen, then enabling the acidic printing and dyeing wastewater to enter a regulation tank, and using alkali waste to regulate the pH value of the acidic printing and dyeing wastewater to be 6.0-8.0; (2) feeding anionic surfactants into the regulation tank, and performing aeration decoloring treatment through a micro-nano aeration device; (3) enabling wastewater after aeration decoloring treatment to flowing through a sepiolite device of immobilized catalysts from bottom to top, wherein chemical oxygen demand (COD) in processed outlet water is lower than 100mg/L, the chromaticity is lower than 40mg/L, and the COD and the chromaticity both reach level 1 emission standards in Discharge standard of water pollutant for dyeing and finishing of textile industry. By means of combination of the anionic surfactants and the micro-nano aeration device, the method performs the aeration decoloring treatment on the acidic dye printing and dyeing wastewater, and absorption-catalysis is performed through the sepiolite device of the immobilized catalysts to further reduce the COD content in the wastewater. The method has the advantages of being simple in process flow, small in floor area, remarkable in effect of treatment on the COD and the chromaticity in the acidic dye printing and dyeing wastewater, and the like.
Description
Technical field
The invention discloses a kind of method of handling the matching stain dyeing waste water, belong to technical field of sewage in the environment protection.
Background technology
Traditional matching stain is meant the water-soluble dye that contains acidic-group, and the contained acidic-group overwhelming majority is present on the dye molecule with the sulfonate sodium form, and it is to exist with the carboxylic acid sodium salt form that indivedual kinds are only arranged.Early stage this type dyestuff all is dyeing under acidic conditions, so the common name matching stain.It is complete that matching stain has chromatogram; Characteristics bright in colour; Be mainly used in the dyeing and the stamp of protein fibres such as wool, real silk and tynex, also can be used for the painted of leather, paper, makeup and ink, minority also is used to make food dye and pigment lake.The Acid Dye Wastewater component is complicated, and saltiness is high, and the organic contamination substrate concentration is big; Colourity is dark, and change of water quality and bio-toxicity are big, difficult for biological degradation; The anti-photodissociation of dyestuff, oxidation-resistance are strong; And contain the multiple organism that has bio-toxicity or cause " three cause " (carcinogenic, teratogenesis, mutagenesis) performance,, all cause and have a strong impact on for environment, human body if can not realize qualified discharge.
In recent years, numerous investigators adopt various chemical methods, physico-chemical processes and biochemical process that the treatment technology of matching stain dyeing waste water is studied.Wherein chemical method comprises Coagulation Method, chemical oxidization method, electrochemical process etc., and is good to the removal effect of COD, high to the percent of decolourization of hydrophobic dye; But the decolorizing effect to hydrophilic dye is poor, and processing cost is high, and body refuse is hard to manage, and present method is not suitable for the processing of big flow in addition, and Coagulation Method is relatively poor to the removal effect of COD; Physico-chemical processes comprises chemical oxidization methods such as adsorption bleaching, coagulating sedimentation, ozone, chlorine bleaching, IX, ultra-filtration membrane decolouring photochemical catalysis, high-voltage pulse electrolytic process etc.; Its obvious processing effect; But processing costs is high, and accommodation is narrow, is prone to produce a large amount of mud hard to manage; Biochemical process is to utilize the metabolism of mikrobe to decompose treatment of organic matters of organic method in the waste water; Be the leading technology of present treatment of dyeing wastewater; A large amount of that printing and dyeing industrial waste water contains be can handle and aerobic method and anaerobic process mainly comprised by the bio-oxidation soluble substance.Biological contact oxidation process is the novel waste water treatment method that grew up in recent years in the biochemical process, and it has obtained paying attention to widely in printing and dyeing industrial waste water is handled, and has occurred industrialized production equipment, and the principal feature of this device is that processing efficiency is high; Volumetric loading can reach 1.5 kg/ (md) ~ 3 kg/ (md), and the residence time is short, and floor space is little; Living weight many (kind is also many) also can be removed the material of bio-refractory, can be used for the tertiary treatment denitrogenation simultaneously; But the main deficiency that it exists at present is: the filler easy blocking, need often wash, when treatment of dyeing and printing; The ratio of air water is higher, and is about 1.15 ~ 1.25, and power consumption is bigger; In the ordinary course of things, every processing 1 t waste water needs 0.4 degree ~ 0.5 degree electricity approximately, and is higher than activated sludge process.Therefore, some technical process of aforesaid method ubiquity are complicated, floor space is big, cost is high, chroma removal rate is not high and the treatment effect fluctuation is big or do not reach shortcoming such as ideal effect.
To above deficiency; The present invention adopts AS to combine with micro-nano aerating apparatus to the processing of decolouring of matching stain dyeing waste water; Sepiolite through solid-carried catalyst adsorbs-katalysis again, further reduces COD content in the waste water.This method has that technical process is simple, floor space is little, for characteristics such as colourity and COD obvious processing effect in the matching stain dyeing waste water, can in field of waste water treatment, promote the use of.
Summary of the invention
The objective of the invention is for overcoming the deficiency of prior art; A kind of method of handling the matching stain dyeing waste water is provided; After adopting AS to combine with micro-nano aerating apparatus the matching stain dyeing waste water handled, the sepiolite through solid-carried catalyst adsorbs-katalysis again, has effectively solved organic concentration height in the matching stain dyeing waste water; Be difficult to technical disadvantages such as degraded, decolouring difficulty, realized technological integrity.
The technical scheme that the present invention adopts is: a kind of method of handling the matching stain dyeing waste water of the present invention, and concrete steps are following:
(1) the acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 6.0～8.0 with salkali waste;
(2) in equalizing tank, add AS, and carry out the aeration decolouring with micro-nano aerating apparatus and handle;
(3) flow through the from bottom to top sepiolite device of solid-carried catalyst of the waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
The sepiolite preparation process of said solid-carried catalyst is:
(1) with sepiolite with the salt soak of 1.0mol/L 2～4 hours, invaded bubble 3～6 hours with the sodium hydroxide of 2.0mol/L again, 125 ℃ of oven dry down;
(2) sepiolite with oven dry soaked 4～8 hours in nickelous nitrate, NSC 51149, palladium (Pd), charcoal (C);
(3) will soak sepiolite afterwards again and mix,, finally obtain the sepiolite of solid-carried catalyst 800 ℃～900 ℃ following activation 8～12 hours with palladium (Pd), charcoal (C).
Wherein said AS is one or both in Triple Pressed Stearic Acid, oleic acid, LAURIC ACID 99 MIN, X 2073, sodium lauryl sulphate, dioctyl sodium sulfosuccinate, the Sodium glycocholate.
The invention has the beneficial effects as follows:
1. the present invention adopts AS to combine with micro-nano aerating apparatus to the processing of decolouring of matching stain dyeing waste water, and the sepiolite through solid-carried catalyst adsorbs-katalysis again, further reduces COD content in the waste water.It is big and to produce secondary pollution, chroma removal rate high and the treatment effect fluctuation is big, complex process, cost is higher or do not reach the shortcoming of ideal effect to have overcome existing printing-dyeing waste water treatment process floor space;
2. the micro-nano bubble technology of the present invention's employing efficiently solves the contact area problem of bubble in water body; Because of its surface-area can effectively increase; Improve dissolved oxygen efficiency greatly, and can produce the micro-bubble of diameter between tens nanometer is to several microns, have good air supporting property; Can also in sewage, stop 60～150 minutes after aeration stops, thereby can reach the purpose that realizes better aeration effect.
Embodiment
Instance 1
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 6.0 with salkali waste; In equalizing tank, add anionic surfactant sodium dodecylbenzene sulfonate, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Instance 2
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 6.5 with salkali waste; In equalizing tank, add AS dioctyl sodium sulfosuccinate, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Instance 3
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 6.9 with salkali waste; In equalizing tank, add the AS Sodium glycocholate, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Instance 4
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 7.5 with salkali waste; In equalizing tank, add anionic, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Instance 5
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 7.9 with salkali waste; In equalizing tank, add the AS Triple Pressed Stearic Acid, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Instance 6
The acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 8.0 with salkali waste; In equalizing tank, add the AS LAURIC ACID 99 MIN, and carry out the aeration decolouring with micro-nano aerating apparatus and handle; Flow through the from bottom to top sepiolite device of solid-carried catalyst of waste water after aeration decolouring is handled; COD is lower than 100mg/L in the water outlet after treatment, and clearance reaches more than 90%, and colourity is lower than 40mg/L, and percent of decolourization all reaches first discharge standard in " textile dyeing and finishing industrial water pollution thing emission standard " up to more than 99%.
Claims (5)
1. method of handling the matching stain dyeing waste water; It is characterized in that: adopt AS to combine with micro-nano aerating apparatus the processing of decolouring of matching stain dyeing waste water; Sepiolite through solid-carried catalyst adsorbs-katalysis again, further reduces COD content in the waste water.
2. a kind of method of handling the matching stain dyeing waste water according to claim 1, it is characterized in that: concrete steps are following:
(1) the acid dyeing waste water of collecting gets into equalizing tank behind screen filtration, regulate pH value to 6.0～8.0 with salkali waste;
(2) in equalizing tank, add AS, and carry out the aeration decolouring with micro-nano aerating apparatus and handle;
(3) flow through the from bottom to top sepiolite device of solid-carried catalyst of the waste water after aeration decolouring is handled.
3. a kind of method of handling the matching stain dyeing waste water according to claim 2; It is characterized in that: the micro-nano bubble technology that is adopted can be produced the micro-bubble of diameter between tens nanometer is to several microns, can also in sewage, stop 60～150 minutes after aeration stops.
4. a kind of method of handling the matching stain dyeing waste water according to claim 1 is characterized in that: described AS is one or both in Triple Pressed Stearic Acid, oleic acid, LAURIC ACID 99 MIN, X 2073, sodium lauryl sulphate, dioctyl sodium sulfosuccinate, the Sodium glycocholate.
5. a kind of method of handling the matching stain dyeing waste water according to claim 1 is characterized in that: sepiolite immobilized catalyzer be the alloy that is prepared from nickel (Ni), cobalt (Co), palladium (Pd), charcoal (C).
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| CN2011103207804A CN102531226A (en) | 2011-10-20 | 2011-10-20 | Method for treating acidic dye printing and dyeing wastewater |
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| CN2011103207804A CN102531226A (en) | 2011-10-20 | 2011-10-20 | Method for treating acidic dye printing and dyeing wastewater |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332821A (en) * | 2013-06-21 | 2013-10-02 | 浙江吉华集团股份有限公司 | Method for treating waste water containing sulfuric acid in production process of dyes and intermediates |
| CN103588318A (en) * | 2012-08-17 | 2014-02-19 | 浙江中辉皮草有限公司 | Processing method used for multiple recycling of fur dyeing effluent |
| CN106012592A (en) * | 2016-05-23 | 2016-10-12 | 绍兴文理学院 | Circulation dyeing method for dye wastewater |
| CN106186557A (en) * | 2016-08-29 | 2016-12-07 | 百诺纳米科技（苏州）有限公司 | A kind of dyeing waste water advanced treating and discoloration method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588318A (en) * | 2012-08-17 | 2014-02-19 | 浙江中辉皮草有限公司 | Processing method used for multiple recycling of fur dyeing effluent |
| CN103332821A (en) * | 2013-06-21 | 2013-10-02 | 浙江吉华集团股份有限公司 | Method for treating waste water containing sulfuric acid in production process of dyes and intermediates |
| CN106012592A (en) * | 2016-05-23 | 2016-10-12 | 绍兴文理学院 | Circulation dyeing method for dye wastewater |
| CN106186557A (en) * | 2016-08-29 | 2016-12-07 | 百诺纳米科技（苏州）有限公司 | A kind of dyeing waste water advanced treating and discoloration method |
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Application publication date: 20120704 |