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首页> 外文会议>International Conference on Remediation of Chlorinated and Recalcitrant Compounds >Treatability Evaluation for Chlorinated Propanes and Ethanes in Groundwater under Reductive Dechlorination Treatments
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Treatability Evaluation for Chlorinated Propanes and Ethanes in Groundwater under Reductive Dechlorination Treatments

机译：在还原脱氯处理下地下水中氯化丙酮和乙醇的可处理性评价

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Background/Objectives. Soil and groundwater at a former chemical facility has been impacted by chlorinated solvents including carbon tetrachloride (CT), 1,2-dichloroethane (DCA), 1,2-dichloropropane (DCP), 1,2,3-trichloropropnae (TCP) and chlorinated organic pesticides (COPs) including alpha-benzenehexachloride (BHC); beta-BHC; delta-BHC, dieldrin, and gamma-BHC. The site investigation began in 1985 and has been delineated for active remediation. The site is located in northeastern portion of Georgia’s Coastal Plain physiographic province. The shallow water-bearing unit (from 5 to 45 feet bgs) contains numerous, discontinuous, fine-grained lenses consisting of clay, silty clay, and clayey sand. The shallow groundwater is under semi-confined conditions and is encountered at 5 to 9 ft bgs. For the deep water-bearing unit below 45 feet bgs, coarsergrained, clayey sands, sands, and clayey gravel are encountered with no groundwater confining layer identified. Soil removal was conducted between 1996 and 2006 and consisted of the removal of 40,000 tons of COP impacted soil. The original approach for groundwater treatment was chemical reductive dechlorination with FMC EHC? product modified with higher zerovalent iron (ZVI) content. The approach was selected based on a bench-scale column study showing promising treatment of COPs. A pilot study of injecting modified EHC? slurry in the source area was implemented in May 2013.
机译：背景/目标。前化学设施的土壤和地下水受氯化溶剂的影响，包括四氯化碳（CT），1,2-二氯乙烷（DCA），1,2-二氯丙烷（DCP），1,2,3-三氯丙基环（TCP）和氯化有机杀虫剂（COP），包括α-苯甲酸氧化氯（BHC）; Beta-BHC; Delta-BHC，Dieldrin和Gamma-BHC。该网站调查于1985年开始，已被划定积极修复。该网站位于佐治亚州沿海普通地理学省的东北部。浅含水装置（5至45英尺BGS）含有由粘土，粉质粘土和粘土砂组成的许多不连续的细粒镜片。浅地下水位于半限制条件下，遇到5至9英尺的BGS。对于低于45英尺的深度含水装置，遇到典雅，粘土砂，砂和粘土砾石，没有鉴定地下水限制层。在1996年至2006年期间进行了土壤去除，并由去除40,000吨撞击土壤。地下水处理的原始方法是用FMC EHC进行化学还原脱氯吗？用较高的Zerovalent铁（ZVI）含量改性产品。该方法是基于基准尺度柱研究选择，呈现出对警察的有前途的治疗。注射改性EHC的试验研究？源区的浆料于2013年5月实施。

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