Composite bio-enzyme soil heavy metal remediation agent and preparation method thereof

Abstract

The invention belongs to the field of soil heavy metal remediation and particularly relates to a composite bio-enzyme soil heavy metal remediation agent and a preparation method thereof. The compositebio-enzyme soil heavy metal remediation agent is composed of, by weight part, 10-15 parts of composite bio-enzymes, 5-10 parts of complex microbial agent, 50-60 parts of plant adsorbent and 20-30 parts of adsorption additives, wherein the complex microbial agent can enrich heavy metal ions through ion exchange, complexation and the like to improve the form of existence of the heavy metal ions insoil; lumbrokinase and chitinase can improve the granular structure as well as the physiochemical properties of soil and accordingly change the form of existence of the heavy metal ions; the plant adsorbent can effectively absorb the heavy metal ions in soil to achieve the aim of reducing the content of heavy metal; the adsorption additives can promote reaction of the composite microbial agent, the complex microbial agent and the heavy metal ions and accordingly can accelerate absorption and conversion and heavy metal.

Description

technical field [0001] The invention belongs to the field of soil heavy metal restoration, and in particular relates to a composite biological enzyme soil heavy metal restoration agent and a preparation method. Background technique [0002] Soil heavy metal pollution refers to the process in which human activities bring heavy metals into the soil, which increases the content of heavy metals in the soil and affects the ecological environment. Since most heavy metals are relatively stable in the soil, the soil itself cannot transform them or It can only be enriched along the food chain if it moves out, so the potential threat to the ecosystem, human, animal and plant health is increasing day by day. "Minamata disease" and "bone pain disease" are caused by mercury Hg pollution and Cd pollution of. [0003] At present, my country has paid enough attention to soil heavy metal pollution, especially in the field of bioremediation of heavy metal pollution. Bioremediation refers to ...

AI Technical Summary

Problems solved by technology

However, the method of relying on the growth of plant roots to reduce soil heavy metals is time-consuming and the effect is not obvious; microbial remediation refers to the absorption of heavy metals in the soil through the metabolic activities of microorganisms, and the chemical substances secreted by microorganisms redox or react to heavy metals. Generate sediment, thereby reducing the content of heavy metals in the soil, but the absorption effect of microorganisms currently used is not ideal, and cannot effectively reduce the content of heavy metals in the soil