原位阻隔抽提协同生物修复技术在焦化厂污染场地的工程应用

APPLICATION OF IN-SITU GAS THERMAL DESORPTION TECHNOLOGY IN ORGANIC CONTAMINATED SITE

随着城市更新和存量规划政策的提出,大量城市内遗留工业场地亟待重新利用,污染土壤的处理成为了企业和政府关注的焦点。其中土壤气因其散溢性强、范围不定和舆论敏感的特点,在治理与修复中面临一定难度。以某北方某大型钢铁退役焦化厂内污染土壤修复工程作为中试场地,通过“原位气相抽提+阻隔+生物强化”多技术协同修复模式,对含有苯、甲苯等挥发性有机物污染的土壤进行修复。

As the policy of urban renewal and inventory planning was proposed,huge amount of remaining industrial sites within cities needed redevelopment.The soil contamination treatment is the main concern of governments and enterprises.It may cause certain difficulties in soil remediation due to the characteristics of soil gas which has high volatility,range uncertainty,and sensitive public sentiment.The in-situ soil vapor extraction(SVE)+separation+bioau gmentation multi-technology collaborative treatment was implemented for soil remediation containing volatile organic compounds(VOCs)such as Benzene and Methylbenzene,where the treatment was carried out in a decommissioned coking plant of a large steelwork in northern China.