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首页> 外文会议>International Conference on Remediation of Chlorinated adn Recalcitrant Compounds >Combining ERH and ISCO for Treatment of PCE-Contaminated Soils(Abstract)
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Combining ERH and ISCO for Treatment of PCE-Contaminated Soils(Abstract)

机译：结合ERH和ISCO治疗PCE受污染的土壤（摘要）

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摘要

Electrical resistance heating (ERH) is capable of removing a significant fraction of PCE mass from low permeability soils. However, laboratory incubation of PCE contami- nated clay soils collected from Site 22 at the Naval Training Center Great Lakes, Illinois, have demonstrated that a slowly desorbing fraction of PCE remains even after heating at 95oC for up to 185 days. This observation was supported by post-thermal treatment soil samples from Great Lakes, which contained up to 84 mg/kg of PCE even though ground- water PCE concentrations were below the detection limit of 5 μg/L. This slowly desorb- ing fraction of contaminant may require prolonged heating to achieve remediation goals, and could result in the rebound of groundwater concentrations once thermal treatment ceases. In-situ chemical oxidation (ISCO) has the potential to increase the rate of PCE degradation and release from low permeability soils by degrading soil organic matter and minerals. This work was performed to determine if combining ERH with in situ chemical oxidation (ISCO) will be effective in reducing the time and temperature required to treat PCE-contaminated Great Lakes soil.
机译：电阻加热（ERH）能够从低渗透土壤中除去大部分PCE质量。然而，在海军训练中心大湖泊地点22伊利诺伊州的PCE染色土壤的实验室孵化已经表明，即使在95oC为高达185天，也仍然仍然缓慢解吸的PCE仍然存在。这种观察结果得到了来自大湖泊的热处理土壤样本，即使磨水PCE浓度低于5μg/升的检测限，含有高达84mg / kg的PCE。这种慢慢解吸的污染物部分可能需要长时间的加热来实现修复目标，并且在热处理一次停止一次后，可以导致地下水浓度的反弹。原位化学氧化（ISCO）通过降解土壤有机物质和矿物质，有可能提高PCE降解和从低渗透性土壤释放的速率。进行该工作以确定是否与原位化学氧化（ISCO）结合ERH，在减少治疗PCE受污染的大湖泊土壤所需的时间和温度方面是有效的。

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