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首页> 外文期刊>Journal of Contaminant Hydrology >The impact of low-temperature seasonal aquifer thermal energy storage (SATES) systems on chlorinated solvent contaminated groundwater: Modeling of spreading and degradation
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The impact of low-temperature seasonal aquifer thermal energy storage (SATES) systems on chlorinated solvent contaminated groundwater: Modeling of spreading and degradation

机译：低温季节性含水层热能存储（SATES）系统对氯化溶剂污染的地下水的影响：扩散和降解模型

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摘要

Groundwater systems are increasingly used for seasonal aquifer thermal energy storage (SATES) for periodic heating and cooling of buildings. Its use is hampered in contaminated aquifers because of the potential environmental risks associated with the spreading of contaminated groundwater, but positive side effects, such as enhanced contaminant remediation, might also occur. A first reactive transport study is presented to assess the effect of SATES on the fate of chlorinated solvents by means of scenario modeling, with emphasis on the effects of transient SATES pumping and applicable kinetic degradation regime. Temperature effects on physical, chemical, and biological reactions were excluded as calculations and initial simulations showed that the small temperature range commonly involved (AT< 15 ℃) only caused minor effects. The results show that a significant decrease of the contaminant mass and (eventually) plume volume occurs when degradation is described as sediment-limited with a constant rate in space and time, provided that dense non-aqueous phase liquid (DNAPL) is absent. However, in the presence of DNAPL dissolution, particularly when the dissolved contaminant reaches SATES wells, a considerably larger contaminant plume is created, depending on the balance between DNAPL dissolution and mass removal by degradation. Under conditions where degradation is contaminant-limited and degradation rates depend on contaminant concentrations in the aquifer, a SATES system does not result in enhanced remediation of a contaminant plume. Although field data are lacking and existing regulatory constraints do not yet permit the application of SATES in contaminated aquifers, reactive transport modeling provides a means of assessing the risks of SATES application in contaminated aquifers. The results from this study are considered to be a first step in identifying the subsurface conditions under which SATES can be applied in a safe or even beneficial manner.
机译：地下水系统越来越多地用于季节性含水层热能存储（SATES），用于建筑物的定期加热和冷却。由于与受污染的地下水扩散相关的潜在环境风险，在受污染的含水层中限制了其使用，但是也可能会产生积极的副作用，例如提高污染物的修复能力。提出了第一个反应性运输研究，以通过方案建模来评估SATES对氯化溶剂命运的影响，重点是瞬态SATES泵送的影响和适用的动力学降解机制。计算中未考虑温度对物理，化学和生物反应的影响，初步模拟表明，通常涉及的较小温度范围（AT <15℃）仅引起较小的影响。结果表明，当降解被描述为受沉积物限制且空间和时间的速率恒定时，只要不存在致密的非水相液体（DNAPL），污染物的质量和（最终）羽流就会显着减少。但是，在存在DNAPL溶解的情况下，尤其是当溶解的污染物到达SATES井时，会产生相当大的污染物羽流，具体取决于DNAPL溶解与通过降解去除物质之间的平衡。在降解受到污染物限制且降解速率取决于含水层中污染物浓度的条件下，SATES系统不会提高污染物羽流的修复能力。尽管缺少现场数据，并且现有的法规限制还不允许在污染的含水层中使用SATES，但是反应性运输模型提供了一种评估在污染的含水层中使用SATES的风险的方法。这项研究的结果被认为是确定地下条件的第一步，在该条件下可以安全或有益地使用SATES。

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  • 来源
    《Journal of Contaminant Hydrology》 |2013年第4期|1-13|共13页
  • 作者

    Koen G. Zuurbier; Niels Hartog; Johan Valstar; Vincent E.A. Post; Boris M. van Breukelen;

  • 作者单位

    KWR Watercyck Research Institute, Groningenhaven 7, 3433 PE, The Netherlands,Critical Zone Hydrology Croup, Department of Earth Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands;

    KWR Watercyck Research Institute, Groningenhaven 7, 3433 PE, The Netherlands,Deltares, Princetonlaan 6, 3584 CB Utrecht, The Netherlands,Environmental Hydrogeology Croup, Faculty of Earth Sciences, Utrecht University, P.O. Box 80021, 3508 TA Utrecht. The Netherlands;

    Deltares, Princetonlaan 6, 3584 CB Utrecht, The Netherlands;

    School of the Environment & National Centre for Groundwater Research and Training, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia;

    Critical Zone Hydrology Croup, Department of Earth Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ates; croundwater; remediation; reactive transport modeling;

    机译：吃水;地下水;修复;反应运输模型;

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