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Chlorinated hydrocarbon treatment using a horizontal flow treatment well system

机译：使用水平流处理井系统的氯化烃处理

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Horizontal flow treatment well (HFTW) systems with in-well catalytic reactors, which are proposed for in situ destruction of chlorinated hydrocarbon contaminants dissolved in groundwater, are modeled. In an HFTW system, wells equipped with in-well catalytic reactors recirculate contaminated groundwater. No contaminated water is pumped to the surface. Due to groundwater recirculation, the contaminant makes multiple passes through the cataltic reactors, so the system achieves greater concentration reductions than would be attainable by a single-pass through the reactor. Palladium (Pd) has been found to catalyze the dehalogenation of chlorinated hydrocarbons completely and rapidly in the presence of molecular hydrogen (H_2) as the sole electron donor. Laboratory column studies were conducted to obtain kinetic parameters for dehalogenation of chlorinated ethenes in a Pd/H_2 reactor. These parameters are then incorporated into a model that accounts for both the recirculating flow through an HFTW system and the reaction kinetics of an in-well Pd/H_2 reactor. The model is used as a tool to design a system to treat trichloroethylene-contaminated groundwater at a hypothetical site.
机译：建立了带有井内催化反应器的水平流处理井（HFTW）系统的模型，该系统被建议用于就地销毁溶解在地下水中的氯代烃污染物。在HFTW系统中，配备井内催化反应器的井将受污染的地下水再循环。没有污染的水被泵送到地表。由于地下水的再循环，污染物多次通过催化反应器，因此与单次通过反应器相比，该系统可实现更大的浓度降低。已经发现，在分子氢（H_2）作为唯一电子给体的情况下，钯（Pd）可以完全，快速地催化氯化烃的脱卤作用。进行了实验室色谱柱研究，以获得动力学参数，用于在Pd / H_2反应器中对氯化乙烯进行脱卤。然后将这些参数合并到一个模型中，该模型既要考虑通过HFTW系统的再循环流量，又要考虑井内Pd / H_2反应器的反应动力学。该模型用作设计假想系统的工具，用于处理被三氯乙烯污染的地下水。

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