• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ground Water Monitoring & Remediation >Simulated Soil Vapor Intrusion Attenuation Factors Including Biodegradation For Petroleumhydrocarbons
【24h】

Simulated Soil Vapor Intrusion Attenuation Factors Including Biodegradation For Petroleumhydrocarbons

机译：模拟的土壤蒸汽入侵衰减因子，包括石油烃的生物降解

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Aerobic biodegradation can contribute significantly to the attenuation of petroleum hydrocarbons vapors in the unsatu-rated zone; however, most regulatory guidance for assessing potential human health risks via vapor intrusion to indoor air either neglect biodegradation in developing generic screening levels or allow for only one order of magnitude additional attenuation for aerobically degradable compounds, which may be overly conservative in some cases. This paper describes results from three-dimensional numerical model simulations of vapor intrusion for petroleum hydrocarbons to assess the influence of aerobic biodegradation on the attenuation factor for a variety of source concentrations and depths for residential buildings with basements and slab-on-grade construction. The simulations conducted in this study provide a framework for understanding the degree to which bioattenuation will occur under a variety of scenarios and provide insight into site conditions that will result in significant biodegradation. This improved understanding may be used to improve the conceptual model of contaminant transport, guide field data collection and interpretation, and estimate semi-site-specific attenuation factors for combinations of source concentrations, source depth, oxygen distribution, and building characteristics where site conditions reasonably match the scenarios simulated herein.
机译：有氧生物降解可显着促进未饱和区域中石油碳氢化合物蒸气的衰减。但是，大多数通过蒸气侵入室内空气评估潜在的人类健康风险的法规指南在制定通用筛选水平时忽略了生物降解，或者仅允许将需氧降解化合物的额外衰减降低一个数量级，在某些情况下可能过于保守。本文描述了石油烃蒸汽侵入的三维数值模型仿真结果，以评估有氧生物降解对地下室和楼板结构住宅建筑各种源浓度和深度的衰减因子的影响。在这项研究中进行的模拟提供了一个框架，用于了解在各种情况下生物衰减的程度，并提供了对导致严重生物降解的现场条件的了解。这种更好的理解可用于改善污染物传输的概念模型，指导现场数据收集和解释，并在现场条件合理的情况下针对源浓度，源深度，氧气分布和建筑物特征的组合估算特定于现场的半衰减因子匹配此处模拟的场景。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号