Discussion of problems in the process of large-scale contaminate sites remediation and project practice

In recent years, with the rapid development of urbanization process, the problems of soil and groundwater pollution in large-scale polluted sites abandoned by the city were particularly prominent, and the environmental and human health risks in filed redevelopment process were high. The characteristics of large-scale contaminated sites, such as wide distribution, large area and complex pollution, as well as the problems faced in the process of redevelopment, such as emphasis on remediation than investigation, single type of remediation technologies, and difficulty in secondary pollution prevention and control were discussed. On this basis, the corresponding countermeasures were also proposed based on the concept of green sustainable remediation. Besides, the practical experience of implementing the concept of green sustainable remediation in the process of remediation and redevelopment of Beijing Coking Plant site was introduced, including conducting additional site investigations, adopting integrated remediation technologies, strengthening secondary pollution prevention and control, and establishing public participation mechanisms, etc.