Compound microbial preparation for soil remediation and preparation method and application of compound microbial preparation for soil remediation

Abstract

The invention discloses a compound microbial preparation for soil remediation. The compound microbial preparation comprises a spirulina platensis agent, a corynebacterium glutamicum ATCC13032 agent and a Hyphomicrobium denitrificans CGMCC No.10620 agent. The invention further discloses a preparation method and application of the compound microbial preparation for soil remediation. By joint use ofthe three microbial agents, effects of nitrogen and phosphorus removal and heavy metal adsorption are much superior to those of single and pairwise joint use of the bacterial agents, the ammonium-nitrogen removal rate reaches 95% or above, the P removal rate reaches 95%, and the heavy metal Cu and Cd removal rate reaches 96% or above.

Description

[0001] Technical solutions [0002] The invention belongs to the technical field of soil remediation, and in particular relates to a composite microbial preparation for remediation of soil, a preparation method and application thereof. Background technique [0003] Soil is the target of pollutants in the atmosphere, water and solid waste that migrate, flow and deposit in the environment. It is the bearer of long-term environmental pollution. With the rapid development of social economy and industrialization, some industrial wastewater has caused soil heavy metal pollution. Ammonia nitrogen pollution, organic pollution, etc. [0004] The remediation technology and method of soil pollution have been studied abroad since the late 1970s and early 1980s. In the early stage, physical and chemical methods were generally used to remediate contaminated soil, such as heat treatment and chemical leaching, but they were expensive and not suitable for large areas. application. In the lat...

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Problems solved by technology

[0004] The remediation technology and method of soil pollution have been studied abroad since the late 1970s and early 1980s. In the early stage, physical and chemical methods were generally used to remediate contaminated soil, such as heat treatment and chemical leaching, but they were expensive and not suitable for large areas. application

In the late 1980s and early 1990s, foreign countries began to study bioremediation methods based on the catabolism of microorganisms and plants based on physical and chemical processes. In recent years, they have developed very rapidly. They are not only more economical than physical and chemical methods, but also less prone to secondary pollution. pollution, it is more suitable for large-scale soil remediation, and bioremediation technology has begun to be the main treatment technology for soil remediation, and has played an increasingly important role. Therefore, it is urgent to comprehensively solve and repair the problems of heavy metal pollution, ammonia nitrogen pollution and organic matter pollution in the soil.

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