Environmentally-friendly flocculating agent and preparation method thereof

Abstract

The invention discloses an environmentally-friendly flocculating agent and a preparation method thereof, and belongs to the field of water treatment agents. The environmentally-friendly flocculating agent comprises, by weight, 5-15 parts of fly ash, 5-15 parts of potassium aluminum sulfate, 5-15 parts of bentonite, 5-10 parts of polyvinylpyrrolidone, 4-8 parts of chitosan, 5-15 parts of vinylpyrrolidone, 4-10 parts of ammonium persulfate, 4-12 parts of sodium aluminum sulfate, 3-9 parts of styrene sulfonate and 100-150 parts of water. The environmentally-friendly flocculating agent has the advantages of short flocculation and precipitation time, good effect, low cost, improvement of the active emulsifying power of water molecules, and degradation of harmful substances and heavy metals in the water, can effectively treat high-concentration and high-turbidity wastewater and non-degradable wastewater, and can be widely used in the treatment of municipal sewage and various industrial wastewaters and the treatment of polluted river and lake water.

Description

technical field [0001] The invention relates to an environment-friendly flocculant and a preparation method thereof, belonging to the field of water treatment agents. Background technique [0002] Coagulation treatment is one of the key links in wastewater treatment, which can remove turbidity and pollution, and reduce the pollution load of subsequent sewage treatment. The flocculant is the key factor to determine the effect of coagulation treatment, and has an important impact on the operation status of the subsequent process, the final effluent water quality and cost. According to its chemical composition, flocculants can be generally divided into two types: inorganic flocculants and organic flocculants. Inorganic flocculants include inorganic coagulants and inorganic polymer flocculants; organic flocculants include synthetic organic polymer flocculants, natural organic polymer flocculants and microbial flocculants. Flocculants are mainly groups with positive (negative) ...

AI Technical Summary

Problems solved by technology

Due to the current disadvantages of slow flocculation and sedimentation and high drug consumption

Polymer flocculants such as basic polyaluminum chloride (PAC), polyaluminum sulfate, polyferric sulfate, etc., overcome the disadvantages of low processing efficiency of low molecular flocculants, but their cost is high, and when low temperature and low turbidity Poor processing effect

Organic flocculants are generally polymers, such as polyamine flocculants, quaternary ammonium starch-based flocculants, and polyacrylamide flocculants. Among them, polyacrylamide has the advantages of less dosage, strong ability to clarify water quality, and fast flocculation speed. It is not easily affected by the pH value of water, and the amount of sludge generated is less, which has been widely used. However, polyacrylamide has strong neurotoxicity and certain carcinogenicity. When a large amount of polyacrylamide is used to treat wastewater, it will produce polymer residues. , destroying the biological chain of the water body, thereby affecting human health