Environmental Risk Control of Typical Units during Remediation of VOCs Contaminated Sites

VOCs have resulted in environmental risk during contaminated sites remediation process because of high volatility and biological toxicity of VOCs pollutants.Risk control system for remediation of VOCs contaminated sites was constructed.And then，technological and institutional risk control methods during the typical remediation procedures such as excavating process and soil vapor extraction（SVE）system exhaust treatment were researched specifically.