Soil heavy metal cadmium remover and preparation method and application thereof

Abstract

The invention belongs to the field of soil heavy metal cadmium removers, and particularly relates to a soil heavy metal cadmium remover which is prepared from the following raw materials in parts by weight: 6-8 parts of citric acid, 20-30 parts of straw powder, 10-20 parts of desulfurized gypsum, 6-10 parts of a coagulant aid, 50-60 parts of distilled water, 4-6 parts of polyacrylamide, 8-10 parts of terpilenol, 4-6 parts of sodium oleate, 6-8 parts of activated carbon, 10-16 parts of phanerochaete chrysosporium extracellular polymeric substance, 6-8 parts of montmorillonite, 10-14 parts of pectin and 10-20 parts of polyhydroxy amino polyether. According to the scheme, citric acid, straw powder, desulfurized gypsum, sodium sulfate and montmorillonite are designed to serve as main materials of the heavy metal cadmium remover, polyacrylamide, terpilenol, activated carbon, phanerochaete chrysosporium extracellular polymeric substances and polyhydroxy amino polyether are designed to serve as auxiliary materials, and the auxiliary materials are matched with coagulant aids, water and pectin to form the novel heavy metal cadmium remover. The heavy metal cadmium remover can be effectively combined with the heavy metal cadmium so that the purpose of removing the heavy metal cadmium in the soil can be achieved, and the soil containing the heavy metal cadmium is well recovered.

Description

technical field [0001] The invention belongs to the field of soil heavy metal cadmium remover, in particular to a soil heavy metal cadmium remover and its preparation method and application. Background technique [0002] With the irrational development and application of mineral resources, sewage irrigation, large-scale application of chemical fertilizers and pesticides, and the rapid development of industrialization and urbanization, soil pollution has become increasingly serious. At present, among the polluted soil area in our country, the land grain polluted by heavy metals every year reaches 1.2×10 7 tons, and the direct economic loss exceeded 20 billion yuan. Facing such a severe situation, how to deal with soil heavy metal pollution and soil remediation has become the focus of research in the fields of agriculture, ecology and environmental science. [0003] Soil remediation is a technical measure to restore the normal function of polluted soil. Soil remediation ref...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a soil heavy metal cadmium remover and its preparation method and application, which solves the problem that the existing soil heavy metal cadmium remover uses too many inorganic components, resulting in poor soil repair effect, and also solves the problem Solved the problem of poor adsorption effect on heavy metal cadmium in soil