摘要
以某典型的Cr(Ⅵ)污染场地为例,针对不同的污染浓度选取不同的修复工艺达到修复目标,其中中轻度污染土壤[Cr(Ⅵ)总量小于150 mg/kg]采用还原稳定化工艺,重度污染土壤[Cr(Ⅵ)总量大于150 mg/kg]采用淋洗+还原稳定化联合修复工艺,并通过实验室小试确定合理的还原稳定化药剂添加量、淋洗菌液固液比、养护时间等工艺参数,为类似污染场地的修复工艺及主要参数的选取提供参考。
A typical Cr(Ⅵ)contaminated site was taken as an example,different remediation technologies were selected for different pollution concentrations in order to achieve the remediation target. The reduction stabilization process was used for moderately polluted soil which with a total Cr(Ⅵ)amount of less than 150 mg/kg,and leaching and reduction stabilization combined process was used for severely polluted soil which with a total Cr(Ⅵ)amount of more than 150 mg/kg. Through the laboratory test,the reasonable reduction stabilization agentia dosage,solid-liquid ratio of leaching bacteria,curing time and other technological parameters have been determined,which could provide references for the remediation process of similar contaminated sites and the selection of main parameters.
作者
江文琛
Jiang Wenchen(Shanghai Municipal Engineering Design Institute(Group)Co.Ltd.,Shanghai 200092)
出处
《环境卫生工程》
2020年第5期78-82,共5页
Environmental Sanitation Engineering
基金
上海市环保科研项目(沪环科[2019]第3号)。
关键词
Cr(Ⅵ)污染场地
还原稳定化工艺
淋洗工艺
药剂添加量
固液比
养护时间
Cr(Ⅵ) contaminated sites
reduction stabilization process
leaching process
agentia dosage
solid-liquid ratio
curing time
