Composition for treating mine soil pollution and method for remedying mine soil

Abstract

The invention relates to a composition for controlling soil pollution in mines. The composition comprises the following components: crop straws and derivatives of crop straws; the crop straws are peanut straws, corn straws, soybean straws, rapeseed straws, rice straws One or more of various crop straws such as straw; the crop straw derivatives are peanut straw biochar prepared from peanut straw, soybean straw biochar prepared from soybean straw, and corn straw biochar prepared from corn straw One or more of rape stalk biochar prepared from rape stalks and rice straw charcoal prepared from rice straw; according to the different pH values ​​of mine soil, the weight percentages of crop straw and crop straw derivatives are different. The invention can not only reduce the bioavailability of heavy metals in mine soil, reduce the acidity of polluted soil, but also improve soil fertility at the same time, without secondary pollution, and turn waste into treasure.

Description

technical field [0001] The invention belongs to the field of mine soil pollution control, and relates to the removal of heavy metals in mine soil, the reduction of soil acidity and the improvement of soil fertility by using crushed crop straw and its derivatives. It is a cheap, efficient and non-secondary pollution The soil treatment technology, specifically relates to a composition for controlling mine soil pollution and its application method and application. Background technique [0002] In recent years, a large number of metal mines have been exploited in the southern region, and the problem of environmental pollution by mining has attracted people's attention. Mining activities lead to heavy metal pollution in mining areas (surface soil, surface water, groundwater), soil acidification, crop yield reduction and quality decline, directly endangering human health and the sustainable development of the mining industry. [0003] Mine soil remediation methods are generally d...

AI Technical Summary

Problems solved by technology

However, the preparation of this method is relatively complicated, and it is not suitable for the promotion and application of large areas.

[0011] The existing mine soil remediation technology has certain disadvantages whether it is physical remediation, chemical remediation, or phytoremediation. Physical remediation is a large amount of work, which consumes manpower, material resources, and financial resources; various chemical reagents used in chemical remediation are applied to Secondary pollution is easy to occur in the soil; the phytoremediation cycle is long, and there is no good way to deal with plants enriched with heavy metals

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