Present Situation and Evaluation of Contaminated Soil Disposal Technique

Abstract

In recent years, because of the abuse of pesticides and fertilizers and the random discharge of sewage, the soil pollution is becoming more and more serious. At present, China's soil environment is grim. The treatment of contaminated soil is the focus of current research in agriculture, environment and ecology. Because of the different types of soil pollution and soil properties, and the complex process of contaminated soil, many factors need to be considered. Common soil remediation techniques include: Chemical remediation, bioremediation technology. The bioremediation technologies include: animal remediation technology, phytoremediation technology and microbial remediation technology. Animal remediation technology is the use of lower animals in the soil metabolic activity degradation of organic pollutants in soil conversion. Phytoremediation technology refers to the absorption, enrichment, degradation, transformation of soil contaminants, to achieve the purpose of soil control. At present, phytoremediation technology has been widely used, which can effectively control heavy metal contaminated soil. Microbial remediation technology is the use of soil microbial metabolic activity of the soil in the degradation of pollutants into non-toxic substances.