Research of Decision for Contaminated Site Remediation Based on DESYRE Model

The DESYRE model developed by CVR, Italy was applied to investigate the remediation of a contaminated site in North China. After a comprehensive analysis of the status of pollutant distribution, pollutant toxicity and exposure pathways, the risk level distribution under different land use scenarios were determined. Several good remediation technologies were screened from existing remediation technologies database and the remediation effects were simulated to provide scientific basis for selecting remediation technologies and formulating land use scenario. The results showed that for the site was most suitable for residential and recreation land uses, and the combination of excavation treatment and solidification/stabilization ex-situ technologies was the better for remediation. The DESYRE model could be suitable for sustainable management of contaminated sites in China, although it needs some modifications to adapt to the actual management context in China.