Preparation method of sewage treatment agent

Abstract

The invention discloses a preparation method of a sewage treatment agent. The preparation method comprises the following steps of firstly, modifying sodium bentonite with dilute hydrochloric acid andlauryl sodium sulfate, afterwards, intercalating with chitosan, adsorbing an ammonium persulfate initiator by using the intercalated bentonite, next, adding 0.32 to 0.41 part of sodium hydroxide into50 parts of water, next, adding 3 to 4 parts of acrylic acid, 6 to 8 parts of acrylamide, 0.02 to 0.04 part of maleic anhydride and 0.002 to 0.003 part of polymerization inhibitor in sequence, continuously agitating at 50 to 55 DEG C, afterwards, adding 20 parts of polymerization seed, 0.08 to 0.11 part of sodium sulfite and 0.5 to 0.6 part of copper sulfate in sequence, reacting for 5min to 8min,subsequently, adding 0.02 to 0.05 part of N,N-methylene bisacrylamide, continuously reacting for 50min to 60min, afterwards, filtering, firstly washing by using desorption liquid, then washing to beneutral by using water, and finally drying and crushing to obtain the sewage treatment agent. According to the sewage treatment agent prepared by the preparation method, the bentonite is closely connected with a polymer, and the treatment effect on heavy metal contaminated water is good.

Description

technical field [0001] The invention relates to a preparation method of a sewage treatment agent. Background technique [0002] Due to population growth and economic development, a series of problems affecting the quality of resources caused by excessive exploitation and irrational development and utilization of resources have directly threatened the survival of us and future generations. Our country is also facing these problems. Our country is a country with insufficient water resources and medical resources. How to alleviate the problems of water resource medical shortage and pollution has become an urgent problem. [0003] At present, there are physical, chemical, biological, comprehensive and other methods to deal with the pollution of water resources, but most of the physical methods have problems of poor treatment effect and unstable treatment rate; the cost of biological methods is too high to be popularized and used; Chemical methods are used to treat sewage, but t...

AI Technical Summary

Problems solved by technology

[0003] At present, there are physical, chemical, biological, comprehensive and other methods to deal with the pollution of water resources, but most of the physical methods have problems of poor treatment effect and unstable treatment rate; the cost of biological methods is too high to be popularized and used; Chemical methods are used to treat sewage, but the existing sewage treatment agents have secondary pollution problems in their reagent components, which will also have a certain impact on the environment

Inorganic flocculant composite polymer has become the most researched flocculant at present, which has the characteristics of good flocculation effect and low toxicity, but the combination of inorganic flocculant and polymer is a difficult problem in the subject research. Combined in the form of wrapping, which weakens the sewage treatment capacity of the inorganic flocculant part