| Popis: |
The issue of contaminated sites is receiving increasing public concern in China due to its close relation with industrial activities, disposal of hazardous materials, and environmental accidents. CRAES has conducted many successful studies of soil pollution and remediation. In this chapter, six sections are included to briefly introduce these studies. Section 1 – “Introduction” – describes the background of risk management of contaminated sites. Section 2 – “Site Investigation and Risk Assessment” – describes the progress in pollution investigation and source appointment, risk assessment of contaminants and uncertainty analysis, and spatial pattern and distribution mapping of soil contaminants on certain sites. Section 3 – “Technologies Used for Soil Remediation and Risk Control” – describes the progress in bioremediation technology, thermal desorption, and mechanical soil aeration and stabilization and solidification. Section 4 – “The Environmental Fate and Criteria of Contaminants” – describes the progress in the vertical transport of PAHs in soils, the sorption kinetic processes of organic compounds in soils, the air-soil exchange of organochlorine pesticides, and the soil environmental criteria for antimony (Sb) based on groundwater protection. Section 5 describes the “Technical Support That CRAES Provided for Soil Environmental Management,” including national soil survey, soil pollution accident response, POPs-contaminated site management, and soil screening level establishment for central or local government. Section 6 – “Demonstrations and Projects” – provides a summary of demonstrations and projects that CRAES took part in. These demonstrations and projects include petroleum refinery site, oil fields, steel production site, medicine production site, pulp and paper production site, fertilizer production site, abandoned coking plant site, chloralkali production site, chromate plants, and pesticide plants. These studies have improved our understanding of soil pollution status and the development of remediation technologies in China and will aid in the formulation of policies and regulations regarding soil pollution control. |
