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Preparation method of composite flocculant

A composite flocculant and sodium bisulfite technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of incomplete treatment of pollutants, insufficient chroma, complex components, etc., and improve the efficiency of sewage treatment , reduce sewage turbidity, rapid proliferation effect

Inactive Publication Date: 2015-08-12
谢秋鸿
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] Most industrial wastewater has complex components and high chroma, and contains many heavy metals and organic substances that are harmful to microorganisms. The requirements of flocculants put forward higher requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] The preparation method of composite flocculant, its raw materials include crystalline aluminum chloride, sodium hydroxide, sulfuric acid, sodium bisulfite, ammonium persulfate, acrylamide, N,N-dimethyl-N-octadecanoyl benzyl chloride Ammonium, octadecyltrimethylammonium chloride and MMH, and are prepared according to the following ratio and steps:

[0014] 1) Synthesis of ternary graft copolymer: Install a PTFE stirrer, reflux condenser, thermometer and air guide tube on a 250mL four-necked flask, place the four-necked flask in a constant temperature water bath at 40°C, and add a certain amount of The monomer aqueous solution (the total mass fraction of acrylamide, N,N-dimethyl-N-octadecanoyl benzyl ammonium chloride and octadecyl trimethyl ammonium chloride is 28% to 35% respectively, and the monomer The molar ratio is 1.5~2:0.5~1:0.5~1), pass through ammonia to deoxygenate for 0.5h, under stirring, then slowly add dropwise (total mass fraction of ammonium persulfate an...

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Abstract

The invention discloses a preparation method of a composite flocculant. The composite flocculant comprises crystalized aluminum chloride, sulfuric acid, sodium hydrogen sulfite, amine persulfate, acrylamide and N, N-dimethyl-N- octadecyl benzemethanaminium chloride and octadecyl trimethyl ammonium chloride and MMH. The raw materials are subjected to ternary starch graft copolymer synthesis and crushed to obtain the composite flocculant. When the composite flocculant is matched with an existing sewage treatment system, sewage treatment effect can reach notational emission standards, sludge emission is reduced greatly, ecologicalization, reduction and recycling treatment of city industry and domestic sewage is achieved.

Description

technical field [0001] The invention relates to the technical field of flocculants, in particular to a preparation method of a composite flocculant. Background technique [0002] Flocculation is an important water purification method widely used in drinking water treatment and sewage treatment. In drinking water treatment, flocculation sedimentation is an effective means to remove suspended solids and colloids in raw water; in sewage treatment, it can be used as pretreatment before biochemical treatment, or can be strengthened synchronously with biochemical treatment, which can efficiently remove suspended solids and improve Biodegradability of sewage. [0003] Most industrial wastewater has complex components and high chroma, and contains many heavy metals and organic substances that are harmful to microorganisms. The requirements of flocculants put forward higher requirements. Contents of the invention [0004] In order to overcome the above-mentioned shortcoming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 谢秋鸿
Owner 谢秋鸿
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