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Cationic polyacrylamide sewage treatment agent

A technology of polyacrylamide and sewage treatment agent, which is applied in the direction of flocculation/sedimentation water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of secondary pollution, long flocculation time and high cost, and achieve the convenience of industrial The effect of low production and operation cost and convenient operation

Inactive Publication Date: 2017-12-15
WUHAN QIANRUITAI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the sewage treatment agents used in the prior art have the following disadvantages in the treatment of sewage: (1) The traditional method treats such waste water that contains some metal ions, suspended solids, organic and inorganic chemical decomposition substances, etc. that remain in the beneficiation tailings solution When using multiple agents to remove harmful components respectively, each agent only has a single effect and cannot remove two or more harmful components in the wastewater at the same time; (2) Use agents with multiple effects to treat sewage The cost is high, the process is complicated, and it is easy to cause secondary pollution; (3) The flocculation time is too long, which is not suitable for the current automatic operation of sewage treatment, and the flocculation effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Acrylamide 5g, dimethylamine 20g, dibenzoyl peroxide 0.5g, allyl alkylthionocarbamate 25g, sodium persulfate 0.5g, sodium hydroxide 10g were used.

[0014] Make a 1% solution of polyacrylamide with deionized water, stir evenly, take a certain amount of polyacrylamide solution and put it in a three-necked flask, add sodium hydroxide solution to adjust the pH = 10-11, add dimethylamine after 30 minutes Solution, after stirring for 20 minutes, add dibenzoyl oxide, then pass through nitrogen, and carry out polymerization reaction at 60-70°C, polymerize for 2-3 hours, and finally add allyl alkylthionocarbamate slowly, and react After cooling for 1 hour, add sodium sulfate and mix evenly to obtain a cationic polyacrylamide sewage treatment agent.

Embodiment 2

[0016] Acrylamide 15g, dimethylamine 30g, dibenzoyl peroxide 1g, allyl alkylthionocarbamate 35g, sodium persulfate 3g, sodium hydroxide 20g were used.

[0017] Make a 1% solution of polyacrylamide with deionized water, stir evenly, take a certain amount of polyacrylamide solution and put it in a three-necked flask, add sodium hydroxide solution to adjust the pH = 10-11, add dimethylamine after 30 minutes Solution, after stirring for 20 minutes, add dibenzoyl oxide, then pass through nitrogen, and carry out polymerization reaction at 60-70°C, polymerize for 2-3 hours, and finally add allyl alkylthionocarbamate slowly, and react After cooling for 1 hour, add sodium sulfate and mix evenly to obtain a cationic polyacrylamide sewage treatment agent.

Embodiment 3

[0019] Acrylamide 10g, dimethylamine 25g, dibenzoyl peroxide 0.7g, allyl alkylthionocarbamate 30g, sodium persulfate 1.5g, sodium hydroxide 15g were used.

[0020] Make a 1% solution of polyacrylamide with deionized water, stir evenly, take a certain amount of polyacrylamide solution and put it in a three-necked flask, add sodium hydroxide solution to adjust the pH = 10-11, add dimethylamine after 30 minutes Solution, after stirring for 20 minutes, add dibenzoyl oxide, then pass through nitrogen, and carry out polymerization reaction at 60-70°C, polymerize for 2-3 hours, and finally add allyl alkylthionocarbamate slowly, and react After cooling for 1 hour, add sodium sulfate and mix evenly to obtain a cationic polyacrylamide sewage treatment agent.

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PUM

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Abstract

The invention relates to a cationic polyacrylamide sewage treatment agent and belongs to the technical field of sewage treatment. The cationic polyacrylamide sewage treatment agent has the advantages that the prepared cationic polyacrylamide sewage treatment agent is excellent in flocculation effect, high in sedimentation rate, good in water purification effect, free of toxins, harmless, safe and reliable.

Description

technical field [0001] The invention relates to a cationic polyacrylamide sewage treatment agent, which belongs to the technical field of sewage treatment. Background technique [0002] Polyacrylamide Classification Polyacrylamide Product Introduction: Polyacrylamide (PAM) is a water-soluble high molecular polymer, insoluble in most organic solvents, has good flocculation, can reduce friction resistance between liquids, and is classified according to ionic characteristics It can be divided into four types: non-ionic, anionic, cationic and amphoteric. Sewage treatment plants use cationic polyacrylamide as a sludge dewatering agent for sewage operations. [0003] At present, the sewage treatment agents used in the prior art have the following disadvantages in the treatment of sewage: (1) The traditional method treats such waste water that contains some metal ions, suspended solids, organic and inorganic chemical decomposition substances, etc. that remain in the beneficiation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F11/14C08F120/56C08F265/10C08F228/02
CPCC02F1/56C02F11/14C08F120/56C08F265/10
Inventor 周文婷罗超何运良
Owner WUHAN QIANRUITAI ENVIRONMENT TECH CO LTD