Advances in Microbial Remediation of Organic Contaminated Soil

Abstract

With the growth of population and the rapid development of economy, the discharge of “three wastes” from industry keeps increasing, and the soil organic pollution keeps aggravating, which poses a great threat to human health and the safety of ecological environment. Now for typical organic pollutants, the main use of low cost, no secondary pollution and easy operation of bioremediation method, including composting, bioreactors, etc., and the main body of the repair technology are microbes, due to the microorganism has stronger adaptability to the environment, variability, in the process of survival differentiate into a variety of metabolic type, and can better adapt to the environment. With the development of genetic, genomic, proteomics and metabolomics technologies, knowledge about physiology, ecology, biochemistry and the regulation mechanism of microbial metabolic pathways has been greatly enriched. Therefore, in the future, we can study the degradation ability of the dominant degrading bacteria and their adaptation mechanism to pollutants through experiments, and study the composition of soil microbial community, community function and metabolic pathway through macro gene sequencing, so as to improve the degradation efficiency of bacteria to petroleum hydrocarbons, polycyclic aromatic hydrocarbons and halogenated hydrocarbons. It provides data support and theoretical basis for degradation of compound organic pollutants in natural environment.