Sewage precipitant and using method thereof

Abstract

The invention provides a sewage precipitant and a use method thereof. The sewage precipitant comprises a flocculant, a coagulant aid, a conditioner, a demulsifier, a defoamer and a disinfectant, and is characterized in that the flocculant is a mixture of polyaluminum chloride and PVA, the coagulant aid is a mixture of activated carbon, bentonite and polyacrylamide, the conditioner is calcium oxideand ferric chloride, the demulsifier is T-1, the defoamer is a mixture of silicon dioxide powder and stearic acid, the disinfectant is ozone, and the mass ratio of the flocculant to the coagulant aidto the conditioner to the demulsifier to the defoamer is 2: 10: 0.5: 0.1: 0.1. The sewage precipitant is high in precipitation rate, capable of removing heavy metal ions, free of retention of a largeamount of Al<3+> and Fe<3+> after sewage treatment, capable of sterilizing and removing organic matters such as color, smell and the like in water, high in decomposition speed, free of residual substances and free of secondary pollution.

Description

technical field [0001] The invention relates to the technical field of sewage precipitation, in particular to a sewage precipitation agent and its application method. Background technique [0002] The sewage produced in the process of human life is one of the main sources of pollution of water bodies, mainly feces and washing sewage. Domestic sewage contains a large amount of organic matter and particulate matter, such as cellulose, starch, sugar, fat protein and dust particles, etc.; also often Contains pathogenic bacteria, viruses and parasite eggs; inorganic salts such as chloride, sulfate, phosphate, bicarbonate and sodium, potassium, calcium, magnesium, etc., are generally characterized by high nitrogen, sulfur and phosphorus content. Under the action of anaerobic bacteria, it is easy to generate odorous substances. Some wastewater even contains some heavy metal ions, which need to be treated and discharged. Now when sewage is treated, some chemical additives need to b...

AI Technical Summary

Problems solved by technology

Some wastewater even contains some heavy metal ions, which need to be treated and discharged. Now when sewage is treated, some chemical additives need to be added. This treatment method will introduce new pollutants, such as precipitants, ion capture agents, etc., causing new pollution.

[0003] Therefore, the existing precipitant for sewage treatment has the problems of producing new pollutants and poor treatment effect

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