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首页> 外文会议>International Conference on Remediation of Chlorinated and Recalcitrant Compounds >Evaluation of the Fate, Transport, and Mass Flux/Discharge of Commingled Chlorinated Benzenes, Toluenes, and Xylene near a River
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Evaluation of the Fate, Transport, and Mass Flux/Discharge of Commingled Chlorinated Benzenes, Toluenes, and Xylene near a River

机译：评价河流附近混合氯化苯并，甲苯和二甲苯的命运，运输和质量通量/放电

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Background/Objectives. An evaluation of the fate, transport, and mass flux/discharge of commingled volatile organic compounds (VOCs) in groundwater is being performed at a former industrial site in the northeast United States. The primary VOCs in groundwater are chlorobenzene (up to 14 mg/L), 1,2-dichlorobenzene (up to 30.7 mg/L), 2-chlorotoluene (up to 48.4 mg/L), toluene (up to 15.4 mg/L), and xylenes (up to 1.1 mg/L). The water table is 7 to 10 feet below ground surface (ft bgs), and the site is underlain by the following stratigraphic layers: (1) urban fill and concrete structures; (2) homogenous gray silt of alluvial origin; (3) a heterogeneous mixture of gray sand, silt, clay, and gravel of glacial outwash origin; (4) relatively homogeneous fine sand and silty sand; (5) glacial till; and (6) competent sandstone bedrock (50 to 59 ft bgs). Groundwater migrates beneath a steel sheetpile bulkhead at a depth of 25 ft bgs, eventually discharging to a river adjacent to the site. The portion of the groundwater VOC plume with VOCs at concentrations above applicable regulatory criteria is approximately 2 acres in aerial extent, and extends over a depth interval of 7 to 42 feet below ground surface (ft bgs). A groundwater extraction and treatment system situated upgradient of the bulkhead to intercept the plume was operated between 1995 and 2010, yielding asymptotic mass removal rates towards the end of operation. The purpose of the current evaluation is to characterize mass flux discharge to the river and to evaluate alternative remedial approaches to address the completed exposure pathway.
机译：背景/目标。在美国东北地区的前工业部位进行地下水中混合的挥发性有机化合物（VOC）的命运，运输和质量通量/放电的评估。地下水中的主要VOC是氯苯（高达14mg / L），1,2-二氯苯（高达30.7mg / L），2-氯戊戊烯（高达48.4mg / L），甲苯（高达15.4 mg / L. ）和二甲苯（高达1.1 mg / L）。水位桌子在地面（FT BGS）以下7至10英尺，并且通过以下地层层面临下划线：（1）城市填充和混凝土结构; （2）冲积起源的均匀灰色淤泥; （3）灰色砂，淤泥，粘土和冰川露水起源的砾石的异质混合物; （4）相对均匀的细砂和粉状; （5）冰川直到; （6）孤独的砂岩基岩（50至59英尺BGS）。地下水以25英尺25英尺的深度迁移钢铁型舱壁下方，最终向毗邻现场的河流。地下水VOC羽流的浓度高于适用的调节标准的VOC在鸟类范围内约为2英亩，并且在地面下方7至42英尺的深度间隔上延伸到地面（FT BGS）。地下水提取和处理系统位于1995年和2010年间拦截灯管升高的膨胀程度，从而在运行结束时产生渐近质量去除率。目前评价的目的是将质量磁通量放电表征到河流上，并评估替代的补救方法以解决已完成的曝光途径。

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