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Combined process for treating textile printing and dyeing wastewater

A technology for textile printing and dyeing and wastewater treatment, which is applied in the field of textile printing and dyeing wastewater treatment. It can solve the problems of high requirements for operators, high recycling rate, and low efficiency, and achieve the effects of simple wastewater treatment process, promotion of degradation, and reduction of wastewater surface load.

Active Publication Date: 2016-09-28
ANHUI GUONENG YISHENG ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many treatment processes for textile printing and dyeing wastewater. The representative traditional process is to directly use chemical methods for simple treatment. This method has a high recycling rate, and the treated wastewater discharged still contains a large amount of harmful substances, and the cost is high and the efficiency is low. ; There is also the use of plasma exchange method, which has high requirements for operators. As far as the current textile industry is concerned, it needs the investment of senior technical personnel from family members, and the wastewater is still in a state of eutrophication after treatment

Method used

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  • Combined process for treating textile printing and dyeing wastewater
  • Combined process for treating textile printing and dyeing wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A composite textile printing and dyeing wastewater treatment process, comprising the steps of:

[0024] S1, neutralization: neutralize the textile printing and dyeing wastewater with dilute sulfuric acid to a pH of 6.5-8.0;

[0025] S2. Coagulation and precipitation: Put 1.5g / L coagulant into the coagulation tank, stir the tank at a rate of 50r / min for 30min, and let it settle for 1h;

[0026] S3, O / A composite biofilter filtration: Pass the waste liquid in the upper layer of the coagulation tank into the O / A composite biofilter, so that the organic pollutants and suspended particles in the sewage are adsorbed, retained and degraded by the microorganisms on the carrier, filter;

[0027] S4. Activation of the active enzyme promotion pool: put 6 mg / L of active enzyme Bacillus protease and magnesium chloride solution into the active enzyme promotion pool, stir the pool water for 2 hours, so that the organic matter in the sewage is adsorbed by the active enzyme on the surf...

Embodiment 2

[0031] A composite textile printing and dyeing wastewater treatment process, comprising the steps of:

[0032] S1, neutralization: neutralize the textile printing and dyeing wastewater with dilute sulfuric acid to a pH of 6.5-8.0;

[0033] S2. Coagulation and precipitation: put 3g / L coagulant into the coagulation tank, stir the tank at a rate of 30r / min for 20min, and let it settle for 2h;

[0034] S3, O / A composite biofilter filtration: Pass the waste liquid in the upper layer of the coagulation tank into the O / A composite biofilter, so that the organic pollutants and suspended particles in the sewage are adsorbed, retained and degraded by the microorganisms on the carrier, filter;

[0035] S4. Activation of the active enzyme promotion pool: put 2 mg / L of active enzyme Louis galactosidase and magnesium chloride solution into the active enzyme promotion pool, stir the pool water for 3 hours, so that the organic matter in the sewage is adsorbed by the active enzyme on the bact...

Embodiment 3

[0039] A composite textile printing and dyeing wastewater treatment process, comprising the steps of:

[0040] S1, neutralization: neutralize the textile printing and dyeing wastewater with dilute sulfuric acid to a pH of 6.5-8.0;

[0041] S2. Coagulation and precipitation: put 0.5g / L coagulant into the coagulation tank, stir the tank at a rate of 80r / min for 10min, and let it settle for 0.5h;

[0042] S3, O / A composite biofilter filtration: Pass the waste liquid in the upper layer of the coagulation tank into the O / A composite biofilter, so that the organic pollutants and suspended particles in the sewage are adsorbed, retained and degraded by the microorganisms on the carrier, filter;

[0043] S4. Activation of active enzyme-promoting pool: put 8 mg / L of active enzyme cellulase and magnesium chloride solution into the active enzyme-promoting pool, stir the pool water to activate for 1 hour, so that the organic matter in the sewage is adsorbed by the active enzyme on the sur...

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Abstract

The invention relates to the technical field of treatment of textile printing and dyeing wastewater, in particular to a combined process for treating textile printing and dyeing wastewater, comprising the steps such as neutralizing, coagulating and precipitating, filtering with an O / A combined biofilter, activating with an active enzyme promoter, adsorbing with a constructed wetland tank, precipitating, sterilizing, and discharging; the combined process provided by the invention has good wastewater purifying effect and enables continuous treatment of batch production wastewater.

Description

technical field [0001] The invention relates to the technical field of textile printing and dyeing wastewater treatment, in particular to a composite textile printing and dyeing wastewater treatment process. Background technique [0002] The sewage discharged from textile printing and dyeing mainly contains fiber dirt on textile fibers, oils and salts coated in the dyeing and finishing process, and various sizing, dyes, surfactants, auxiliary agents, acid and alkali added in the processing process. Wait. Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, deep color, and large changes in water quality. It is a difficult industrial wastewater to treat. With the development of chemical fiber fabrics, the rise of imitation silk and the improvement of finishing requirements after printing and dyeing, a large number of refractory organic substances such as PVA size, rayon alkali hydrolyzate, new dyes, and auxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/30
CPCC02F1/001C02F1/52C02F1/66C02F3/34C02F3/342C02F9/00C02F2103/30C02F2303/04
Inventor 钟华
Owner ANHUI GUONENG YISHENG ENVIRONMENTAL PROTECTION SCI & TECH
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