Medicament for repairing polluted soil and preparation method thereof

Abstract

The invention discloses a medicament for repairing polluted soil and a preparation method thereof. The medicament is prepared from the following components in parts by weight: 5 to 100 parts of microorganism bacterium agent and 1 to 200 parts of chemical agent, wherein the microorganism bacterium agent is prepared from indigenous microorganism culture, nitrifying bacterium culture, denitrifying bacterium culture, phosphorus accumulating bacterium culture, saccharomycetes culture and lactic acid bacterium culture; the weight ratio of the indigenous microorganism culture to the nitrifying bacterium culture to the denitrifying bacterium culture to the phosphorus accumulating bacterium culture to the saccharomycetes culture to the lactic acid bacterium culture is (5 to 10) to (10 to 15) to (10to 15) to (5 to 10) to (10 to 15) to (5 to 10); the chemical agent is prepared from a heavy metal passivating agent and a curing agent; the weight ratio of the heavy metal passivating agent to the curing agent ranges from (1 to 30) to (3 to 170). According to the medicament disclosed by the invention, polluted soil is treated through adopting a physical-chemical-biological combined treatment technology; the medicament has a good repairing effect on the polluted soil.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a medicament for remediation of polluted soil and a preparation method thereof. Background technique [0002] Soil pollution has become a global environmental pollution problem. In recent years, the situation of soil pollution in my country has been very serious: a large area of ​​cultivated land in the country has been polluted by heavy metals and pesticides, seriously threatening the quality and safety of the country's "rice bags" and "vegetable baskets". Commonly used contaminated soil remediation techniques can be roughly divided into ex-situ remediation techniques and in-situ remediation techniques. Whether it is in-situ remediation or ex-situ remediation of polluted soil, in essence, the technical principles of contaminated soil remediation are: (1) Change the existing form of pollutants in the soil or the way they combine with the soil to reduce their pollution in t...

AI Technical Summary

Problems solved by technology

Existing agents for soil remediation all use a single chemical agent or microbial agent, which has poor remediation effect on contaminated soil