Cationic polyacrylamide-modified Fe3O4 magnetic flocculant and preparation method thereof

A technology of polyacrylamide and magnetic flocculant, which is applied in the direction of flocculation/sedimentation water/sewage treatment, organic materials/organic magnetic materials, etc., and can solve the secondary pollution of magnetic flocculant application range, complex flocculation process, high cost, etc. question
CN103073101AInactive Publication Date: 2013-05-01INST OF PROCESS ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2013-05-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a magnetic flocculant and a preparation method thereof, wherein the magnetic flocculant is cationic polyacrylamide-modified magnetic nanometer Fe3O4 particles. The magnetic flocculant provided by the invention retains the advantages of low dosage of organic high molecular flocculant, high flocculation speed, coexistence of salts, low pH value and temperature influence, low total amount of flocculating constituent and the like; and the superparamagnetism of the flocculant enables the flocculant to quicken the precipitation under the effect of an applied magnetic field and to realize quick and efficient separation of residual flocculant and flocculation. The magnetic flocculant provided by the invention has the advantages of simple preparation technique, low cost, easiness in amplification and no secondary pollution, and facilitates realizing efficient and economic flocculation operation.
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Description

technical field

[0001] The present invention relates to a kind of magnetic flocculant, specifically, the present invention relates to a kind of cationic polyacrylamide modified Fe 3 o 4 Magnetic flocculant and its preparation method. Background technique

[0002] Flocculant is widely used in chemical industry, mining industry, environmental protection and other fields, in the process of solid-liquid separation and water treatment, to improve the sedimentation and filtration effect of fine solids. Flocculant, also known as settling agent, is a kind of substance that can coagulate and precipitate small solutes, colloids, and solid suspended particles in a solution that are not easy to settle. With the development of science and technology, the types of flocculants are also increasing. According to the different chemical components, they can be divided into inorganic, organic and microbial flocculants.

[0003] Typical inorganic flocculants include aluminum salts and iron sa...

Claims

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