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Coagulant for treating spinning wastewater

A textile wastewater and coagulant technology, which is applied in water/sewage treatment, textile industry wastewater treatment, special compound water treatment, etc., to achieve fast speed, good heat resistance and good coagulation effect

Inactive Publication Date: 2015-01-14
王玉琴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the development of chemical fiber fabrics, the rise of imitation silk and the improvement of finishing requirements after printing and dyeing, a large amount of refractory organic substances such as PVA size, rayon alkali hydrolyzate, new dyes, and auxiliaries have entered textile printing and dyeing wastewater. The treatment process poses a serious challenge, and the COD concentration has also risen from the original hundreds of milligrams per liter to 3000-5000 mg / l

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0017] A coagulant for treating textile wastewater of the present invention comprises the following components by weight: 20 parts of aluminum sulfate, 15 parts of sodium aluminate, 7 parts of activated silicic acid, 3 parts of polyacrylamide and 10 parts of bentonite.

[0018] Add 500mg of coagulant per 1L of sewage.

Embodiment 2

[0020] A coagulant for treating textile wastewater of the present invention comprises the following components by weight: 25 parts of aluminum sulfate, 18 parts of sodium aluminate, 5 parts of activated silicic acid, 2 parts of polyacrylamide and 15 parts of bentonite.

[0021] The coagulant also contains sodium acetate.

[0022] Preferably, sodium acetate accounts for 5% of the weight percent of coagulant.

[0023] For the coagulant for treating textile waste water, 450mg of coagulant is added to every 1L of sewage.

Embodiment 3

[0025] A coagulant for treating textile wastewater of the present invention comprises the following components by weight: 10 parts of aluminum sulfate, 15 parts of sodium aluminate, 3 parts of activated silicic acid, 4 parts of polyacrylamide and 8 parts of bentonite.

[0026] The coagulant also contains sodium acetate.

[0027] Sodium acetate accounts for 8% of the weight percentage of coagulant.

[0028] For the coagulant for treating textile waste water, 300mg of coagulant is added to every 1L of sewage.

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PUM

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Abstract

The invention discloses a coagulant for treating spinning wastewater. The coagulant comprises aluminum sulfate, sodium aluminate, activated silicic acid and bentonite. The coagulant is used for treating the spinning printing and dyeing wastewater through the steps of firstly filtering the spinning printing and dyeing wastewater by grid, then entering a settling pond, and adding the coagulant into the spinning printing and dyeing wastewater in the settling pond for treating, so that the generated coagulated products are strong and unlikely to damage. The coagulant disclosed by the invention is good in settling performance, good in discoloring and oil-removing effects, large in applied pH value range, high in thermal stability and stable in effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a coagulant for treating textile wastewater. Background technique [0002] The textile printing and dyeing industry is a large discharge of industrial wastewater. The sewage mainly contains dirt, grease, salt on textile fibers, and various sizing, dyes, surfactants, additives, acids and bases added during processing. 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. [0003] 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 auxiliaries have entered textile printing and dyeing wastewater. The treatment p...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/5209C02F9/00C02F2101/32C02F2103/30C02F2305/04
Inventor 牟军平朱娜刘晓于春光
Owner 王玉琴
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