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首页> 外文期刊>Ecological engineering: The Journal of Ecotechnology >E-coil and turbidity attenuation during urban stormwater recycling via Aquifer Storage and Recovery in a brackish limestone aquifer
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E-coil and turbidity attenuation during urban stormwater recycling via Aquifer Storage and Recovery in a brackish limestone aquifer

机译：在微咸的石灰岩含水层中通过含水层的存储和回收，在城市雨水循环利用过程中降低了电子线圈和浊度

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摘要

Aquifer Storage and Recovery (ASR) has been used for decades as a technique to store harvested urban stormwater in aquifers for subsequent reuse. However, stormwater recycling via ASR may also provide a means of improving the quality of the recharged water through passage and storage in the aquifer, thereby allowing improved prediction and management of recovered water quality. In this study, water quality data were evaluated from four stormwater ASR sites operating for up to 14 years in Salisbury, South Australia. Stormwater was injected and stored in a confined carbonate aquifer that initially contained brackish water. Long term operational monitoring of stormwater recycling via ASR was used to quantify the changes in salinity, turbidity and Escherichia coli concentrations. At all sites, E. coli concentrations in recovered water was 2-3 log(10) (90 to 99%) less than injected water. Positive detections of E. coli were found >98% injected water samples in comparison with similar to 20% of recovered water samples from all four sites. Turbidity reduction was >50% for three of the ASR sites. Reductions could not be explained through dilution alone and are the result of bacteria retention and inactivation in the aquifer. The magnitude of E. coli removal, and to a lesser degree turbidity reduction, highlights the potential for integration with engineered treatments. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.
机译：含水层存储和恢复（ASR）已被用作将已收集的城市雨水存储在含水层中以供以后再利用的技术。但是，通过ASR进行的雨水循环利用还可以提供一种手段，通过在含水层中的通过和储存来提高补给水的质量，从而可以改善对回收水质的预测和管理。在这项研究中，对来自南澳大利亚索尔兹伯里长达14年的四个雨水ASR站点的水质数据进行了评估。注入了雨水并将其存储在最初含有微咸水的密闭碳酸盐含水层中。通过ASR进行的雨水回收的长期运行监控用于量化盐度，浊度和大肠杆菌浓度的变化。在所有站点，回收水中的大肠杆菌浓度比注入水少2-3 log（10）（90％至99％）。与所有四个地点回收的水样中的20％相似，发现注入的水样中98％以上的大肠杆菌呈阳性。三个ASR站点的浊度降低> 50％。减少量不能仅通过稀释来解释，而是细菌在含水层中滞留和失活的结果。去除大肠杆菌的程度以及浊度的降低程度较小，这突出表明了与工程化处理方法整合的潜力。 Crown版权所有（C）2015，Elsevier B.V.保留所有权利。

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