Additive for treating sludge and preparing method thereof

Abstract

The invention discloses an additive for treating sludge and a preparing method thereof and belongs to the technical field of sludge treatment. The additive is prepared from, by weight, 5-25 parts of ferrous sulfide, 30-60 parts of magnesium oxide, 1-15 parts of ammonium bicarbonate, 1-15 parts of urea, 1-15 parts of calcium phosphate, 1-15 parts of calcium silicate, 1-15 parts of potassium sulphate and 5-25 parts of plant ash. The additive has the advantages that municipal sludge and river sediment can be effectively treated, waste materials are recycled, artificial soil is made to be used for landscape planting, mine ecological restoration and other projects, and environment benefits, economic benefits and social benefits are high.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to an additive for treating sludge and a preparation method thereof. Background technique [0002] The output of urban sludge (80% water content) in my country is huge, up to 20 million tons per year. However, the current sludge disposal technology in my country is expensive and has limited applicability. It is difficult to absorb all the sludge and the sludge is harmless. The disposal rate is less than 25%, and the phenomenon of sludge siege is becoming more and more prominent; river dredging is an important way to control river water pollution, but the government and environmental protection enterprises are also in a dilemma when faced with the disposal of dredged sediment. [0003] "Water control without mud control is equal to no water control." Urban sludge and river sediment have high water content, are perishable, have a strong odor, and contain parasite e...

AI Technical Summary

Problems solved by technology

[0002] The output of urban sludge (80% water content) in my country is huge, up to 20 million tons per year. However, the current sludge disposal technology in my country is expensive and has limited applicability. It is difficult to absorb all the sludge and the sludge is harmless. The disposal rate is less than 25%, and the phenomenon of sludge siege is becoming more and more prominent; river dredging is an important way to control river water pollution, but the government and environmental protection enterprises are also in a dilemma when faced with the disposal of dredged sediment

[0003] "Water control without mud control is equal to no water control." Urban sludge and river sediment have high water content, are perishable, have a strong odor, and contain parasite eggs, pathogenic microorganisms and heavy metals. Safety has become a limit to the utilization of sludge resources. barriers to use

However, the simple landfill or stacking of sludge will cause secondary pollution, and the cost of incineration and disposal is high. Municipal sludge and river sediment have become another source of pollution, making urban sewage treatment an embarrassing situation

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