Sidhu J P S, Toze S, Hodgers L, Barry K, Page D, Li Y, Dillon P
J Environ Qual. 2015 Sep;44(5):1402-12. doi: 10.2134/jeq2015.03.0118.
Recycling of stormwater water and treated effluent via managed aquifer recharge (MAR) has often been hampered because of perceptions of low microbiological quality of recovered water and associated health risks. The goal of this study was to assess the removal of selected pathogens in four large-scale MAR schemes and to determine the influence of aquifer characteristics, geochemistry, and type of recharge water on the pathogen survival times. Bacterial pathogens tested in this study had the shortest one log removal time (, <3 d), followed by oocysts (, <120 d), with enteric viruses having the biggest variability in removal times (, 18 to >200 d). Human adenovirus and rotavirus were relatively persistent under anaerobic conditions (, >200 d). Human adenovirus survived longer than all the other enteric virus tested in the study and hence could be used as a conservative indicator for virus removal in groundwater during MAR. The results suggest that site-specific subsurface conditions such as groundwater chemistry can have considerable influence on the decay rates of enteric pathogens and that viruses are likely to be the critical pathogens from a public health perspective.
通过有管理的含水层补给（MAR）对雨水和处理后的污水进行循环利用，常常受到阻碍，原因是人们认为回用水的微生物质量较低以及存在相关健康风险。本研究的目的是评估四个大型MAR方案中特定病原体的去除情况，并确定含水层特征、地球化学以及补给水源类型对病原体存活时间的影响。本研究中测试的细菌病原体的对数去除时间最短（<3天），其次是卵囊（<120天），肠道病毒的去除时间变化最大（18至>200天）。人类腺病毒和轮状病毒在厌氧条件下相对持久（>200天）。人类腺病毒的存活时间比本研究中测试的所有其他肠道病毒都长，因此可作为MAR期间地下水中病毒去除的保守指标。结果表明，特定场地的地下条件，如地下水化学性质，可能对肠道病原体的衰减率有相当大的影响，并且从公共卫生角度来看，病毒可能是关键病原体。
