Polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and preparation method thereof

A technology of polydimethyl diallyl ammonium chloride and dimethyl diallyl ammonium chloride, which can be used in flocculation/sedimentation water/sewage treatment, dehydration/drying/concentrated sludge treatment, etc. High cost of chemicals, poor water treatment effect, etc., to achieve the effect of good water treatment effect, excellent coagulation performance, and large alum
CN101628746BInactive Publication Date: 2011-11-16JINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JINAN UNIVERSITY
Publication Date
2011-11-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and a preparation method and an application thereof. The method comprises the following steps: heating polyaluminium chloride solution to 40-90 DEG C while stirring the solution, adding polyferric chloride, heating and stirring the solution to perform copolymerization between polyaluminium chloride and polyferric chloride for 0.5-2.0h, obtaining polymeric aluminum ferric chloride solution; adding polydimethyldiallylammonium chloride colloid at room temperature while stirring to obtain a mixed liquor of the two products; stirring at room temperature to ensure that the polydimethyldiallylammonium chloride colloid and polymeric aluminum ferric chloride are completely mutuallysoluble and obtaining the polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant.
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Description

technical field

[0001] The invention belongs to the technical field of environmental chemical engineering and environmental protection, and mainly relates to the preparation and treatment method of a treatment agent for water body algae pollution, in particular to a polyaluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and Its preparation method and application. Background technique

[0002] At present, my country's surface water is seriously polluted. With the development of industry and agriculture, a large amount of organic or inorganic nitrogen and phosphorus enter the water of lakes and reservoirs, causing a large number of algae to multiply and seriously affecting the water production process. At present, research in the field of algae removal at home and abroad focuses on the optimization and strengthening of conventional coagulants, biological pre-oxidation and chemical pre-oxidation methods, etc. Biological pre-oxidation is to use bi...

Claims

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