Preparation method of compound flocculating agent for adsorbing metal ions

A technology of metal ions and flocculants, applied in chemical instruments and methods, flocculation/precipitation water/sewage treatment, separation of microorganisms, etc., can solve the problems of low activity, poor adsorption, and low utilization rate of flocculants, and achieve high-efficiency flocculation, The effect of improving utilization and activity
CN107686172AInactive Publication Date: 2018-02-13张芸
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
张芸
Publication Date
2018-02-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a composite flocculant for adsorbing metal ions, and belongs to the technical field of flocculants. The present invention separates and screens four microbial flocculant-producing bacteria with the highest flocculation activity from river sludge, mixes and ferments to obtain microbial flocculants, and produces high molecular compounds such as glycoproteins, mucopolysaccharides, proteins, cellulose, and nucleic acids. After soaking in water, the fine particles and natural colloidal particles in the water can be condensed into large flocs, which can be removed from the water. They have high-efficiency flocculation and improve the utilization rate and activity of the flocculant. Using α-ketoglutaric acid to modify chitosan, synthesize chitosan derivatives with higher adsorption capacity, introduce -NH2 to react with carbonyl groups, and introduce carboxyl groups to form stable five-membered ring chelation with metal ions It can effectively absorb heavy metal ions in wastewater. The invention solves the problems of low utilization rate, poor adsorption and low activity of the current flocculant for sewage treatment.
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Description

technical field

[0001] The invention belongs to the technical field of flocculants, and in particular relates to a preparation method of a composite flocculant for adsorbing metal ions. Background technique

[0002] With the development of modern industry and frequent human activities, heavy metal pollution in the ecological environment is becoming more and more serious. In recent years, the frequent occurrence of blood lead and cadmium rice incidents once again shows that heavy metal pollutants can pass through media such as air, water or soil directly or indirectly. Therefore, it has become the focus of our government's work to actively carry out research on the pollution behavior of heavy metals and its prevention and control.

[0003] The direct discharge of heavy metal sewage will not only cause serious pollution to the environment, but also directly affect the healthy life of human beings. Among them, the heavy metal cadmium has the characteristics of high toxicity an...

Claims

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