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Universal dye wastewater treatment agent

A dye wastewater and treatment agent technology, applied in the direction of adsorption of water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the poor adaptability of dye wastewater composition changes, poor dye removal effect, and low adsorption rate and other problems, to achieve good application prospects, significant adsorption effect, and improve the effect of removal rate

Inactive Publication Date: 2018-01-09
陈云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can reduce the dye content in dye wastewater to a certain extent, there are still various defects, for example, due to low adsorption rate, high treatment cost and poor adaptability to changes in dye wastewater components, the result is The removal effect on dyes is not good, and toxic and harmful by-products or a large amount of sludge may be produced during the treatment process, resulting in secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A general dye wastewater treatment agent, comprising the following raw materials in parts by weight: 15 parts of chitosan / activated carbon, 40 parts of polyacrylamide, 18 parts of polyaluminum chloride, 5 parts of tannin, 35 parts of kaolin, and 80 parts of deionized water .

[0015] Wherein, the chitosan / activated carbon preparation method is: add glacial acetic acid after the uniform mixing of chitosan and activated carbon, the mass ratio of chitosan, activated carbon, and glacial acetic acid is 3:2:1, after stirring and swelling for 2h Add glutaraldehyde at a concentration of 5-30mg / L, stir and cross-link in a constant temperature water bath at 60°C, then wash with sodium hydroxide solution to remove the remaining glutaraldehyde, wash, dry, grind, and sieve to finally obtain Required cross-linked chitosan / activated carbon.

Embodiment 2

[0017] A general dye wastewater treatment agent, comprising the following raw materials in parts by weight: 20 parts of chitosan / activated carbon, 30 parts of polyacrylamide, 26 parts of polyaluminum chloride, 10 parts of tannin, 25 parts of kaolin, and 100 parts of deionized water .

[0018] Wherein, the chitosan / activated carbon preparation method is: add glacial acetic acid after the uniform mixing of chitosan and activated carbon, the mass ratio of chitosan, activated carbon, and glacial acetic acid is 3:2:1, after stirring and swelling for 2h Add glutaraldehyde at a concentration of 5-30mg / L, stir and cross-link in a constant temperature water bath at 60°C, then wash with sodium hydroxide solution to remove the remaining glutaraldehyde, wash, dry, grind, and sieve to finally obtain Required cross-linked chitosan / activated carbon.

Embodiment 3

[0020] A general dye wastewater treatment agent, comprising the following raw materials in parts by weight: 28 parts of chitosan / activated carbon, 35 parts of polyacrylamide, 22 parts of polyaluminum chloride, 6 parts of tannin, 30 parts of kaolin, and 95 parts of deionized water .

[0021] Wherein, the chitosan / activated carbon preparation method is: add glacial acetic acid after the uniform mixing of chitosan and activated carbon, the mass ratio of chitosan, activated carbon, and glacial acetic acid is 3:2:1, after stirring and swelling for 2h Add glutaraldehyde at a concentration of 5-30mg / L, stir and cross-link in a constant temperature water bath at 60°C, then wash with sodium hydroxide solution to remove the remaining glutaraldehyde, wash, dry, grind, and sieve to finally obtain Required cross-linked chitosan / activated carbon.

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PUM

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Abstract

The invention discloses a universal dye wastewater treatment agent. The universal dye wastewater treatment agent comprises, by weight, 15 to 20 parts of chitosan / active carbon, 30 to 40 parts of polyacrylamide, 18 to 26 parts of poly aluminium chloride, 5 to 10 parts of tannin, 25 to 35 parts of kaolin, and 80 to 100 parts of deionized water. According to a preparation method, chitosan / active carbon are added, physical adsorption and chemical adsorption are combined for adsorption treatment of dye wastewater, adsorption effect is obvious, and wastewater removing rate is increased effectively;natural tannin is added, and better removing effect is achieved after combination of natural tannin with wastewater. The raw materials are friendly to the environment, no secondary pollution is causedby treatment, and application prospect is promising.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a general wastewater treatment agent. Background technique [0002] In recent years, the treatment of dye wastewater has become one of the research hotspots in the field of water treatment. In the early days, the commonly used dye wastewater treatment methods mainly included flocculation precipitation method, chemical oxidation method, membrane separation method and biological interpretation method. Although these methods can reduce the dye content in dye wastewater to a certain extent, there are still various defects, for example, due to low adsorption rate, high treatment cost and poor adaptability to changes in the composition of dye wastewater, the result is The removal effect on dyes is not good, and toxic and harmful by-products or a large amount of sludge may be produced during the treatment process, resulting in secondary pollution. Contents of...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/30
Inventor 陈云
Owner 陈云
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