Flocculating agent for waste water treatment, and preparation method thereof

Abstract

The invention discloses a flocculating agent for waste water treatment. The flocculating agent comprises components of calcium sulfate, aluminum ion salt, sodium carbonate, polyacrylamide, sodium thiosulfate, chitosan, chitosan quaternary ammonium salt, diatomite, cement and a pH adjusting agent, can be used for treating waste water discharged from food processing plants, metal manufacturing plants, chemical plants and the like, can also be used for treating waste water discharged from farms and slaughter plants, can also be used for purification of water quality in river channels and lakes, and can effectively reduce COD, color and turbidity of waste water.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a flocculant for the treatment of polluted rivers and lakes, especially for the treatment of high-concentration organic wastewater produced in industries such as aquaculture, chemical industry, printing and dyeing, papermaking, and electroplating, and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the continuous expansion of industrial production scale, the problem of environmental pollution is becoming more and more serious, and the pressure on sewage treatment is also increasing. [0003] The traditional flocculants used in sewage treatment can be divided into inorganic flocculants and organic flocculants according to their chemical composition. Among them, inorganic flocculants can be divided into low-molecular inorganic flocculants and high-molecular inorganic flocculants, which mainly use...

AI Technical Summary

Problems solved by technology

Low-molecular-weight inorganic flocculants have the disadvantages of slow flocculation and sedimentation and high chemical consumption. Although high-molecular-weight inorganic flocculants overcome the shortcomings of low-molecular inorganic flocculants, their cost is greatly increased, and the treatment effect on low-temperature and low-turbidity sewage is poor.

Organic flocculants are based on organic polymers, the price is high, and they are greatly affected by the pH value of sewage. In practical applications, reagents need to be added to adjust the pH value of sewage. Therefore, the number of procedures and equipment needs to be increased, and the treatment process is increased. It will inevitably require more processing time, increase the cost of manpower and material resources, and the treated drainage will leave a large amount of organic matter, which will easily form new pollution through oxidation, and the discharge of a large amount of organic matter will destroy the microbial balance in nature and affect the self-purification ability of natural water bodies.

Images