Soil stabilizer for heavy metal contamination, method for preparing soil stabilizer and application thereof

Abstract

The invention discloses a soil stabilizer for heavy metal contamination, a method for preparing the soil stabilizer and application thereof. The soil stabilizer comprises, by weight, 30-40 parts of akadama, 11-19 parts of caffeic acid, 3-7 parts of cobalt naphthenate, 15-25 parts of jade powder, 11-19 parts of sodium lactate and 5-9 parts of dimethyl carbonate. The method includes smashing the akadama, adding the akadama into cobalt naphthenate solution to obtain first solution, heating and hermetically stirring the first solution, adding the dimethyl carbonate into the first solution to obtain second solution and centrifugally separating and washing the second solution to obtain mixtures A; grinding the jade powder, adding the jade powder into caffeic acid solution to obtain first solution, heating and hermetically stirring the first solution, adding sodium lactate solution and the mixtures A into the first solution to obtain second solution, carrying out ultrasonic treatment on the second solution, stirring the second solution until the second solution is dried and carrying out calcination to obtain the soil stabilizer. The soil stabilizer, the method and the application have theadvantages that excellent effects of stabilizing heavy metal or organic contaminants in soil can be realized by the soil stabilizer; effects of degrading halogenated or brominated organic matters canbe realized as the time goes by, and accordingly the total quantity of organic matters can be reduced; the soil stabilizer is high in stabilization speed and low in dosage, and good stabilization effects can be realized by the soil stabilizer.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a soil stabilizer polluted by heavy metals, a preparation method and application thereof. Background technique [0002] In recent years, heavy metal pollution incidents have occurred from time to time, especially the problem of heavy metal soil pollution is becoming more and more apparent. The area of ​​soil pollution in my country is increasing year by year, and it has not been effectively controlled. It has become one of the important environmental problems. For the remediation and treatment of heavy metal soil, stabilization technology is a relatively mature and economically feasible method, and there are currently specific implementation cases at home and abroad. However, from the perspective of existing applications, cement-based reagents are mainly used as stabilizers for restoration. Stabilization with such reagents has the problems of large volume increase ratio an...

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Problems solved by technology

However, from the perspective of existing applications, cement-based reagents are mainly used as stabilizers for restoration. Stabilization with such reagents has the problems of large volume increase ratio and large landfill storage capacity, and it also causes soil or other solid waste to harden and increase. Capacity and other issues are not conducive to subsequent disposal and utilization

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