A kind of microbial preparation for repairing heavy metal polluted soil and preparation method thereof

Abstract

The invention provides a microbial preparation for repairing heavy metal-contaminated soil, which comprises the following components in parts by weight: 10-20 parts of pentachloronitrobenzene-degrading bacteria, 10-20 parts of Aspergillus oryzae, and 10 parts of Bacillus megaterium ‑20 parts, Bacillus licheniformis 10‑20 parts, Trichoderma 15‑25 parts, Pseudomonas fluorescens 15‑25 parts, Bacillus circulans 15‑25 parts, bran 1000‑2000 parts, passed in the bran Add 60% water, sterilize and insert the microorganisms of each component for cultivation to obtain microbial preparations, and then combine with hyperaccumulator plants to repair heavy metal-contaminated soil, which can effectively make the heavy metals in the contaminated soil effective. The state content was significantly increased, which enhanced the absorption of heavy metals in polluted soil by hyperaccumulator plants.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a microbial preparation for remediating heavy metal polluted soil and a preparation method thereof. Background technique [0002] Soil provides living conditions for crops, and agricultural production is inseparable from soil. Soil is a prerequisite for human food sources. With the increasing industrialization of production, the extensive use of pesticides and fertilizers, irrigation of farmland, and solid waste left in the soil, the soil is exposed to huge environmental pollutants. These pollutants accumulate in the soil and cause damage to the soil. The soil itself has a certain purification ability. If the concentration of pollutants exceeds the purification ability of the soil, the soil will change and soil pollution will follow. Among these numerous soil pollutions, heavy metal pollution is becoming more and more prominent. The food shortage and envir...

AI Technical Summary

Problems solved by technology

[0003] Current traditional physical remediation, chemical remediation and biological remediation technologies are costly and easily cause secondary pollution

Images