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Coagulant for printing and dyeing wastewater and preparation method thereof

A technology for printing and dyeing wastewater and coagulant, which is applied in the fields of water treatment parameter control, chemical instruments and methods, water pollutants, etc., can solve the problems of low treatment efficiency of printing and dyeing wastewater, non-standard discharge of printing and dyeing wastewater, and large amount of printing and dyeing wastewater discharge. , to achieve stable coagulation effect, easy control of parameters, and complete precipitation.

Active Publication Date: 2021-06-11
淄博正河净水剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country's printing and dyeing industry is developing rapidly, the discharge of printing and dyeing wastewater is large, and the composition is complex and difficult to treat. However, the existing coagulation method is still low in the treatment efficiency of printing and dyeing wastewater, resulting in the discharge of printing and dyeing wastewater that cannot meet the standard after treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The coagulant for printing and dyeing wastewater described in Example 1, the raw materials are diaminodiphenylmethane, calcium carbonate, aluminum sulfate, magnesium chloride hexahydrate, polyaluminum ferric chloride, polyaluminum silicate, sodium alginate, chitosan Mixture of sugars, benzalkonium chloride, benzalkonium sorbitol, polyvinylpyrrolidone and tetravinylpentylamine.

[0026] The coagulant, in parts by weight, has a raw material composition as follows: 3 parts of diaminodiphenylmethane, 4 parts of calcium carbonate, 5 parts of aluminum sulfate, 7 parts of magnesium chloride hexahydrate, 10 parts of polyaluminum ferric chloride, 13 parts of aluminum polysilicate, 6 parts of sodium alginate, 4 parts of chitosan, 8 parts of benzalkonium chloride, 13 parts of dibenzylidene sorbitol, 8 parts of polyvinylpyrrolidone and 3 parts of tetravinylpentylamine share.

[0027] In the coagulant, sodium alginate, as an immobilized carrier, has low mass transfer resistance, in...

Embodiment 2

[0038] The coagulant for printing and dyeing wastewater described in Example 2, the raw materials are diaminodiphenylmethane, calcium carbonate, aluminum sulfate, magnesium chloride hexahydrate, polyaluminum ferric chloride, polyaluminum silicate, sodium alginate, chitosan Mixture of sugars, benzalkonium chloride, benzalkonium sorbitol, polyvinylpyrrolidone and tetravinylpentylamine.

[0039] The coagulant, in parts by weight, consists of the following raw materials: 4 parts of diaminodiphenylmethane, 8 parts of calcium carbonate, 7 parts of aluminum sulfate, 10 parts of magnesium chloride hexahydrate, 13 parts of polyaluminum ferric chloride, 17 parts of aluminum polysilicate, 5 parts of sodium alginate, 5 parts of chitosan, 8 parts of benzalkonium chloride, 10 parts of dibenzylidene sorbitol, 5 parts of polyvinylpyrrolidone and 2 parts of tetravinylpentylamine share.

[0040] The preparation method of the printing and dyeing wastewater coagulant described in the present emb...

Embodiment 3

[0050] The coagulant for printing and dyeing wastewater described in Example 3, raw materials are diaminodiphenylmethane, calcium carbonate, aluminum sulfate, magnesium chloride hexahydrate, polyaluminum ferric chloride, polyaluminum silicate, sodium alginate, chitosan Mixture of sugars, benzalkonium chloride, benzalkonium sorbitol, polyvinylpyrrolidone and tetravinylpentylamine.

[0051] The coagulant, in parts by weight, has a raw material composition as follows: 5 parts of diaminodiphenylmethane, 7 parts of calcium carbonate, 6 parts of aluminum sulfate, 8 parts of magnesium chloride hexahydrate, 15 parts of polyaluminum ferric chloride, 15 parts of aluminum polysilicate, 7 parts of sodium alginate, 4 parts of chitosan, 10 parts of benzalkonium chloride, 12 parts of dibenzylidene sorbitol, 7 parts of polyvinylpyrrolidone and 3 parts of tetravinylpentylamine share.

[0052] The preparation method of the printing and dyeing wastewater coagulant described in the present embod...

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PUM

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Abstract

The invention belongs to the technical field of coagulants, and particularly relates to a coagulant for printing and dyeing wastewater and a preparation method thereof. The raw material of the coagulant is a mixture of diaminodiphenyl-methane, calcium carbonate, aluminum sulfate, magnesium chloride hexahydrate, polyaluminum ferric chloride, aluminum polysilicate, sodium alginate, chitosan, benzyl alkyl ammonium chloride, dibenzylidene sorbitol, polyvinylpyrrolidone and tetravinyl pentylamine. According to the coagulant for printing and dyeing wastewater disclosed by the invention, the inorganic coagulant and the organic compound are synergistically matched to generate adsorption, chelation and coagulation precipitation reaction to form very high cured flocculate, and the moisture content in the cured flocculate can be reduced, so that precipitation components are complete, and the treatment efficiency of the printing and dyeing wastewater is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coagulants, and in particular relates to a coagulant for printing and dyeing wastewater and a preparation method thereof. Background technique [0002] The textile printing and dyeing industry is the industry with the largest amount of wastewater discharge in the industrial industry. The printing and dyeing wastewater is the wastewater discharged from the printing and dyeing factories that mainly process cotton, hemp, chemical fiber and their blended products. Printing and dyeing wastewater has a large amount of water, 100-200 tons of water is consumed per ton of textile printing and dyeing, and 80-90% of it becomes wastewater. Textile printing and dyeing wastewater has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. It is one of the most difficult industrial wastewater to treat. Impurities, sand substances, inorganic sal...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F101/30
CPCC02F1/5236C02F1/5263C02F1/5272C02F1/56C02F1/547C02F1/54C02F2101/30C02F2101/308C02F2209/08
Inventor 杨爱国杨金悦董敬山胡正旗杨涛
Owner 淄博正河净水剂有限公司
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