Study On Contaminated Soil Remediation And Management

Soil is an important material for production and human life, it is also an indispensable and non-renewable natural resource,"without it, nothing will exist". However, in recent years, industrial "Three Wastes" emissions, city life garbage landfill, the mining of the heavy metal and agricultural non-point source pollutions, have seriously threatened to the soil ecological environment, following the continuous increase of population, economic rapid development, city industrialization and agricultural modernization. At the same time, human health problems caused by contaminated soil are becoming more and more seriously, mainly due to pollutants in soil accumulated by plants/water. And then, they are enriched into the human and animal body through the food chain, resulting to endanger human health, cause cancer and other diseases ultimately.It is reason that soil has its significance to the survival of human beings. With the soil pollution problems increasingly prominent, it is particularly important in basic and applied researches on soil pollution prevention and remediation technology. The research on contaminated soil remediation technology started in the late1970s and has been rapidly developed in Europe and the United States and other developed countries during the past30years. However, this issue is initially emphasized in China after the "10th Five-Year Plan". An "Environmental Site Investigation Technical Specifications","Contaminated Site Risk Assessment Guidelines (draft)","Soil Environmental Quality Standards amended (draft)"(GB15618-1995) and "Contaminated Site Technical Guidelines" was successively promulgated even though still in its infancy now.Firstly, this paper briefly describes the knowledge of the soil contaminated, and then analyzes the importance and necessity of its prevention and remediation. Reading relevant literatures about it and reviewing the current soil remediation status in China, the advantages and disadvantages of physical-, chemical-and bio-technology are focused as well as the methods and models for risk assessment of soil contamination are discussed. Based on the practical experience of the developed countries, it is recommended that the framework of Chinese soil remediation technology in order to promote the sustainable, green and healthy development of China’s land use. Finally, some recommendations are proposed on China’s soil remediation and management-soil management pattern based on the result of risk assessment.