Water-soluble organic amphoteric copolymer flocculant and preparation method

Abstract

The invention discloses a water-soluble organic amphoteric copolymer flocculant and a preparation method. The water-soluble organic amphoteric copolymer flocculant is a copolymer formed by copolymerizing three monomers, namely, methyl acrylyl oxyethyl trimethyl ammonium halide, crylic acid-N,N-dimethylamino ethyl ester and 2-acrylamide-2-methyl propanesulfonic acid (salt), with a bifunctional monomer diacrylate. A redox initiator, an inorganic peroxide initiator and a polymerizing auxiliary agent are simultaneously used in the preparation process; the conversion rate of the monomers is increased; the remained monomers are reduced; the flocculant is simply prepared and operated and can be directly used; and the prepared flocculant has the advantages of small dosage, large floc diameter, quick sedimentation, and the like.

Description

technical field [0001] The invention relates to a water-soluble organic amphoteric copolymer flocculant and a preparation method. Background technique [0002] Water is the basic material for human survival and social development. At present, the water environment in the world is facing the problems of water resource shortage, excessive consumption and serious pollution. The World Health Organization (WHO) survey shows that 80% of human diseases are related to unsafe water quality. China is a country with abundant water resources, but at the same time it is a country with severe water shortage, extremely low utilization rate of water resources and serious water pollution. These three factors seriously restrict people's normal life and sustainable economic development. Therefore, effective treatment and reuse of waste water (sewage) is an inevitable way to solve limited water resources to meet people's growing production and living needs. In the process of waste (sewage) ...

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Problems solved by technology

2. The Mannich reaction requires the use of a large amount of organic solvents, which does not conform to the principles of green chemistry;

3. Polyacrylamide amphoteric polymer flocculant modified by Mannich reaction is not suitable for treating wastewater with high pH, ​​and its storage stability is not high

3. Overcome the shortcomings of poor dehydration effect and unstable performance of polyacrylamide flocculants;

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