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High-efficiency sewage treatment flocculating agent and preparation method thereof

A sewage treatment and flocculant technology, applied in the field of sewage treatment agent preparation, can solve the problems of high water content, troublesome follow-up work, unsatisfactory flocculation effect, etc., and achieve the effect of low water content of filter cake and high water filtration capacity

Inactive Publication Date: 2012-05-30
TIANJIN SANNONGJIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in many sewage treatment processes, the flocculation effect of cationic flocculant and anionic flocculant alone is not ideal.
For example, the high water content in the cake and the low recovery rate of suspended solids have caused troubles to the subsequent work.

Method used

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Embodiment Construction

[0010] A high-efficiency sewage treatment flocculant is prepared by taking 36.5g of acrylamide AM, 20g of acrylic acid AA, 60.5g of diallyldimethylammonium chloride DAC, and 46.3g of acryloyloxyethyltrimethylammonium chloride AEAAC. After these four monomers were fully stirred in a reaction vessel equipped with an electric stirrer, 174g of deionized water and 0.5ml of stable dispersant polyethylene oxide (PEO) were added and the temperature was raised to 50°C, and then 0.016g of N,N- Use bisacrylamide as a crosslinking agent, add 0.5g initiator 2,2-azobis(2-peptidylpropyl) dihydrochloride and react for 7 hours, then add another initiator, solidify after 5 hours, dry and sieve , That is, a dispersion with a particle size of 10-15um and a molecular weight of 9 million to 10 million can be obtained.

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Abstract

The invention relates to a high-efficiency sewage treatment flocculating agent, which is prepared by mixing four monomers, namely acrylamide AM, acrylic acid AA, diallyldimethylammonium chloride DAC and acryloyloxyethyl trimethylammonium chloride AEAAC, according to the mol ratio of 30:20:10:40. The flocculating agent disclosed by the invention is an amphoteric ionic polymer flocculating agent, and has the flocculating effect superior to like products; besides a macromolecular bridging action, the flocculating agent has action mechanisms as follows: an anion base on a macromolecular chain is bonded with a metal ion on an activated surface, but cation is bonded with anion on the activated surface, therefore, the flocculating agent disclosed by the invention can be used in a large pH value range; the bonding and flocculating effect is increased; the flocculating agent can be used for flocculating in the event of being proper and protecting in the event of being excessive without damaging; and, when the flocculating agent is used for treating sewage, the advantages of higher water filter amount and lower moisture content of a filter cake are obtained.

Description

Technical field: [0001] The invention belongs to a preparation method of a sewage treatment agent, in particular to a high-efficiency sewage treatment flocculant and a preparation method thereof. Background technique: [0002] At present, in many sewage treatment processes, the flocculation effect of cationic flocculant and anionic flocculant used alone is not ideal. For example, the high water content in the cake and the low recovery rate of suspended solids have caused troubles to the subsequent work. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a high-efficiency sewage treatment flocculant, which has amphoteric polymer genes and negatively charged anion genes, and can be used in a wide range of pH values , increasing the combined flocculation effect. [0004] As conceived above, the technical solution of the present invention is: a high-efficiency sewage treatment floccul...

Claims

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Application Information

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IPC IPC(8): C08F220/34C08F220/56C08F220/06C08F226/02C08F222/38C02F1/56
Inventor 韩文彬王辰王木兰张克森
Owner TIANJIN SANNONGJIN TECH
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