关键词: 危险废物填埋场, 水泥窑协同处置, 污染土清挖外运, 地下水修复

Abstract: Taking the soil and groundwater restoration and treatment project of a hazardous waste landfill area as a practical case, the implementation effects of the pollution soil excavation and transportation-cement kiln collaborative disposal, and groundwater extraction-injection treatment process route were studied. The results indicated that the surrounding soil of the hazardous waste landfill area was mainly polluted by volatile phenols, arsenic, chromium and antimony, and the surrounding groundwater was polluted by volatile phenols, fluorides, arsenic and thallium. Volatile phenols are the main pollutants in the soil and groundwater of this hazardous waste landfill area. Groundwater pollution is closely related to soil pollution, but the characteristic pollutants in soil and groundwater are not completely consistent. In this study,the process of excavating and transporting contaminated soil for co-disposal with cement kilns could quickly remove pollution sources, creating conditions for the remediation and treatment of groundwater. The groundwater extraction-injection treatment process could effectively improve the groundwater quality, and the concentrations of volatile phenols, fluorides, arsenic and thallium in groundwater could be restored to below standard limits in a short period of time.

Key words: hazardous waste landfill, collaborative disposal with cement kilns, excavation and transportation of contaminated soil； groundwater remediation