Sewage flocculant

Abstract

The invention relates to the technical field of sewage treatment, in particular to a sewage flocculant. The flocculant consists of the following components in parts by weight: 12-25 parts of poly-aluminum calcium chloride, 5-15 parts of ferric chloride, 2-10 parts of aluminum potassium sulfate, 2-8 parts of sodium carboxymethylcellulose, 1-6 parts of sodium hypochlorite, 10-30 parts of poly-molybdenum chloride, 10-20 parts of diatomite, 10-20 parts of zeolite and 0.01-0.05 part of additives. The sewage flocculant has the beneficial effects that the obtained flocculant is good in degradability, low in ecotoxicity, free of stimulation on human bodies, obvious in flocculation effect on the treatment of various complex sewage and high in cost performance for dehydration of sludge; the sewage flocculant has the characteristics of no toxicity and residue for human bodies, good flocculation effect and wide application range.

Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewage flocculant. Background technique

[0002] Flocculants are mainly divided into inorganic flocculants, organic polymer flocculants and microbial flocculants. Among them, inorganic flocculants occupy an important share in my country's current market, with an annual demand of more than 100,000 tons, mainly represented by iron salts and aluminum salts. Iron salts are corrosive and easy to form residues, which will color the treated water and cause secondary pollution. In terms of hygiene, it has been found that the accumulation of aluminum salts in the human body is directly related to today's Alzheimer's disease. Macromolecular organic flocculants, such as polyacrylamide, are not toxic in themselves, but are not easy to decompose. Long-term accumulation in nature will also cause secondary pollution. The acrylamide monomer has a strong "three-induced" effect. In 200...