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首页> 外文期刊>International Journal of Soil, Sediment and Water >Pulsed Biosparging of a Residual Fuel Source Emplaced at CFB Borden43
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Pulsed Biosparging of a Residual Fuel Source Emplaced at CFB Borden43

机译：CFB Borden43放置的残余燃料源的脉冲生物喷雾

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Biosparging enhances both aerobic biodegradation and volatilization, and is commonly applied to residual hydrocarbon source zone remediation. This technology was applied in pulsed mode to a known source of gasoline contamination in order to quantify the extent of remediation achieved in terms of both mass removed and reduction in mass discharge into groundwater. The gasoline source was created by injecting about 40 L of gasoline with 10% ethanol in small volumes from 24 injection points below the water table in 2004. The downgradient plume is still being monitored and the source area was cored in 2007. In 2008, a 3-point biosparge system was operated with an airtight cover to capture and monitor off-gases. Of the hydrocarbons in place, about 80% of pentane, 50% of hexane, but only about 4% of the aromatic hydrocarbons were volatilized and removed. CO2 and O2 monitoring in the off-gas confirmed limited biodegradation of hydrocarbons.
机译：生物喷射同时促进有氧生物降解和挥发，通常用于残余烃源区的修复。这项技术以脉冲模式应用于已知的汽油污染源，以便根据去除的质量和减少的地下水入水量来量化修复的程度。通过在2004年从地下水位以下的24个注入点少量注入40 L的汽油和10％的乙醇来创建汽油源。仍在监控降羽羽状流，并在2007年对源区进行了核查。2008年，三点式生物喷雾系统带有气密盖，用于捕获和监测废气。在适当的碳氢化合物中，约80％的戊烷，50％的己烷，但仅约4％的芳族烃挥发并除去。尾气中的CO2和O2监测证实了碳氢化合物的有限生物降解。

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