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首页> 外文会议>Sixth International in Situ and On-Site Bioremediation Symposium, 6th, Jun 4-7, 2001, San Diego, California >IN SITU REMOVAL OF PERCHLORATE FROM GROUNDWATER
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IN SITU REMOVAL OF PERCHLORATE FROM GROUNDWATER

机译：原位清除地下水中的高氯酸盐

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摘要

Laboratory column studies suggest that in situ barriers might be used to remove perchlorate from groundwater. Water containing 20 mg/L (0.2 mM) perchlorate was pumped through 1.5 by 30 cm columns containing sand. At the start of the study all columns were inoculated with bacteria from a soil extract and, after 14 days operation 0.47 mg of soybean oil was injected onto one group of columns, the treatment group, while a second group of columns, the control group, received no oil. Water containing perchlorate was pumped through both groups of columns and samples of the effluent water were collected at intervals and analyzed for chloride and perchlorate. In the control columns, perchlorate was present in the column effluents throughout the study. In the treatment columns, perchlorate in the effluent decreased by ～ 99 % (～ 0.2 mM) and the concentration of chloride increased by ～0.2 mM after the addition of the vegetable oil. In the control columns perchlorate levels remained high and chloride levels low throughout the study. Permeable barriers containing innocuous vegetable oils, other carbon substrates, or other electron donors might be used in situ to remove perchlorate from contaminated groundwater.
机译：实验室柱研究表明，就地屏障可用于去除地下水中的高氯酸盐。将含20 mg / L（0.2 mM）高氯酸盐的水泵送通过1.5 x 30 cm含沙的色谱柱。在研究开始时，所有柱均接种了土壤提取物中的细菌，手术14天后，将0.47 mg大豆油注入一组柱（治疗组），而另一组柱（对照组），没有收到油。将含高氯酸盐的水泵送通过两组色谱柱，并定期收集废水样品，并分析其中的氯离子和高氯酸盐。在整个研究过程中，对照柱中的高氯酸盐都存在于柱流出物中。在处理塔中，加入植物油后，废水中的高氯酸盐减少了约99％（〜0.2 mM），氯化物的浓度增加了约0.2 mM。在整个研究中，对照柱中的高氯酸盐水平保持较高，而氯离子水平较低。可以使用含有无害植物油，其他碳底物或其他电子给体的渗透性屏障，以从受污染的地下水中去除高氯酸盐。

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