Preparation method of soil heavy-metal stabilizer

A heavy metal stabilizer and soil technology, which is applied in the restoration of polluted soil, chemical instruments and methods, and other chemical processes, can solve the problems of difficult adsorption of heavy metals, strong hydrophobicity, etc., achieve carbon sequestration, short repair time, Eases the effect of absorption
CN104549152AActive Publication Date: 2015-04-29银发环保股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
银发环保股份有限公司
Publication Date
2015-04-29

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Abstract

The invention relates to a preparation method of a soil heavy-metal stabilizer, and belongs to the technical field of soil remediation and treatment. The preparation method comprises the following steps of a, preparing active charcoal, namely, drying organic matter, crushing, immersing by an alkali salt solution, and then firing under the protection of N2 so as to obtain the active charcoal; and b, preparing active organic composite charcoal, namely, mixing a sodium dithiocarbamate derivative solution with the active charcoal, carrying out balance vibration under a dark condition, then centrifuging, collecting a precipitate mixture, and drying so as to obtain the soil heavy-metal stabilizer. The preparation method of the soil heavy-metal stabilizer has the advantages that adsorption and fixing effects for heavy metal in soil are obvious; the absorption of heavy metal in soil cy plants or crops can be relieved effectively; the hazard of taking in heavy metal from crops by human beings is reduced.
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Description

technical field

[0001] The invention belongs to the technical field of soil restoration and management, and in particular relates to a preparation method of a soil heavy metal stabilizer. Background technique

[0002] In recent years, heavy metal pollution incidents have occurred frequently, and the problem of heavy metal soil pollution has become increasingly serious. According to the "2014 National Soil Pollution Survey Bulletin" published by the Ministry of Environmental Protection and the Ministry of Land and Resources, the total soil exceeding the standard rate in the country reached 16.1%, and the point exceeding standard rate of cultivated land soil reached 19.4%. The area of ​​soil pollution is increasing year by year and has not been effectively controlled. Heavy metal soil pollution has become one of the most important environmental problems in my country, and the situation is particularly severe.

[0003] For the remediation and treatment of heavy metal soil, st...

Claims

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