Sludge combined conditioner based on moderate flocculation and protein solidification theory, conditioning method of sludge combined conditioner and economic dosage determination method

Abstract

The invention provides a sludge chemical combined conditioner based on a moderate flocculation and protein curing theory. The sludge chemical combined conditioner comprises a protein curing agent accounting for 0.5-2.5% of the dry basis mass of to-be-treated sludge and a flocculating agent accounting for 0.5-2.5% of the dry basis mass of the to-be-treated sludge, the invention further provides a conditioning method of the sludge chemical combined conditioner based on the moderate flocculation and protein solidification theory, a method of firstly solidifying and then flocculating is adopted, the dewatering capacity of the sludge is greatly improved, and the water content of a prepared sludge cake meets the requirement of 1t; the sludge is conditioned by using an organic agent, the addition amount is lower than 5%, and the conductivity is increased by lt; and the dehydration efficiency is stable and controllable, and the defects of poor sludge dehydration performance, large agent dosage and more inorganic ion component residues in the prior art are overcome.

Description

technical field [0001] The invention relates to the technical field of sludge treatment in municipal sewage plants, in particular to a sludge chemical joint conditioner based on the theory of moderate flocculation and protein solidification, a conditioning method and a method for determining economic dosage. Background technique [0002] Sludge is the main by-product of sewage biological purification treatment, enriching a large number of pathogenic bacteria, heavy metals, and organic pollutants. If it cannot be effectively treated and disposed of, it will produce extremely serious environmental secondary pollution. With the continuous improvement of economic development and urbanization, the rate of sewage collection and treatment in my country has increased year by year. By 2020, a total of 58.825 billion tons of sewage will be treated throughout the year, and 58.7939 million tons of sludge will be generated (with a moisture content of 80%). Such a huge volume of sludge ...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above-mentioned problems existing in the prior art, this application provides a conditioning method of sludge chemical joint conditioner based on the theory of moderate flocculation and protein solidification. The method of solidification and re-flocculation can greatly improve the dehydration ability of sludge, and the moisture content of the prepared mud cake can meet the requirement of <60%, and the sludge is conditioned by using organic agents, the dosage is less than 5%, and the increase in conductivity is <10%. , the dehydration efficiency is stable and controllable, which solves the defects of poor sludge dehydration performance, large dosage of chemicals and more residual inorganic ion components in the prior art