Cross-linked network structured inverse polymer emulsion and application thereof to sludge dewatering

The reverse phase polymer emulsion with a cross-linked network structure solves the problem of low efficiency in traditional sludge dehydration technology, achieves efficient flocculation and dehydration effects, and is suitable for the treatment of high organic matter and anaerobic sludge.

CN109824819AInactive Publication Date: 2019-05-31HUBEI KANGCHUANG TECH CO LTD
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Patent Information

Application Number
CN201910048232.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2019-01-18
Publication Date
2019-05-31
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the existing sludge dehydration technology, traditional flocculants are ineffective when dealing with high organic matter or anaerobic sludge, and it is difficult to improve dehydration efficiency.

Method used

A reverse-phase polymer emulsion with a cross-linked network structure is used, prepared through free radical polymerization, combined with an appropriate amount of pH regulator, metal complexing agent and cross-linking agent to form a water-in-oil emulsion, and polymerization reaction is performed to improve the shear resistance of the floc. cutting capacity and solid content.

Benefits of technology

It significantly improves the flocculation effect and dehydration efficiency of sludge. Compared with linear polymer flocculants, it has higher solid content and stability, and is suitable for the treatment of high organic matter and anaerobic sludge.

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Abstract

The invention discloses a cross-linked network structured inverse polymer emulsion. A system comprises an acrylamide monomer, free radical polymerizable cationic monomers, a cross-linking agent, a metal complexing agent, a chain transfer agent, water, an organic solvent, a first emulsifying agent, a second emulsifying agent, an initiator, an oxidant, a reducing agent, an inversion auxiliary agentand an appropriate amount of a pH regulator. By free radical polymerization, a cross-linked network structured polymer is obtained, the degree of crosslinking can be accurately regulated, and high solid content can be kept while the solid content reaches 50-55%. The inverse polymer emulsion is high in stability and excellent in dissolvability, and excellent application effects of the emulsion areguaranteed; in application of the emulsion to sludge flocculation of high-organic sludge or highly-anaerobic sludge, special flocculation effects are achieved. Compared with a linear polymer flocculating agent, the emulsion has advantages that sludge flocculation effects can be improved, high shear resistance of flocs is achieved, and sludge dewatering effects are remarkably improved.
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