使用处理后的城市污水进行含水层补给时与水头无关且不随时间变化的入渗率
Head-Independent Time-Invariant Infiltration Rate in Aquifer Recharge with Treated Municipal Wastewater
AI总结：
针对土壤含水层处理(SAT)入渗率难预测的问题，研究以色列Shafdan项目50个池十年数据，发现入渗率恒定且与水头无关，简化了淹水周期预测并有助于其他含水层补给方法。
摘要：
在面临水资源短缺和人口增长的地区，增加水资源的手段至关重要。土壤含水层处理（SAT）是一种廉价、低维护、低能耗的方法，可为生食作物灌溉甚至饮用水提供水源。然而，SAT 最昂贵的成本组成部分是土地使用，即入渗池，其面积与入渗率成反比。入渗率是 SAT 池设计和运行中最重要的特征，直到现在人们仍认为它依赖于时间，因此难以预测。本研究以以色列的 Shafdan SAT 为案例，利用来自 50 个补给池长达十年的数据，研究了入渗率的时间依赖性。研究揭示，在不同淹水事件中，排水阶段的污水水位下降具有显著的一致性，表明存在一个恒定的、与水头无关的入渗率。超过 40,000 次淹水事件中，97% 表现出这种行为。此外，以此方式计算的入渗率能很好地预测整个润湿阶段的平均入渗率。与水位无关的入渗率是一个普遍特征。在所有 50 个研究池中均发现了这一现象，无论土壤含沙量、投入运行年份、运行条件和季节如何。本研究揭示的恒定入渗率定律简化了淹水周期持续时间的预测，并将促进多个池 SAT 系统的简化预测建模。我们的研究可能超越 SAT 系统，为其他人工含水层补给方法提供适用见解，这对于有效的水资源管理和确保环境兼容性至关重要。
英文摘要：
Means to increase water resources are essential in regions grappling with water scarcity and growing populations. Soil aquifer treatment (SAT) is a cheap, low maintenance, low-energy method to supply water for irrigation of crops consumed raw or even for drinking purposes. However, the most expensive cost-component of SATs is the land use, the infiltration basins the area of which is inversely proportional to the infiltration rate, the most important characteristic of SAT basins design and operation, which until now was believed to be time-dependent and, therefore, difficult to predict. Focusing on the Shafdan SAT in Israel as a showcase and using a decade's worth of data from 50 recharge basins, we study the time dependence of the infiltration rates. The study reveals a noteworthy consistency in the decline of effluent levels during the drainage phase across various flooding events, signifying a constant, head-independent infiltration rate. 97% of over 40,000 flooding events showed this behavior. Furthermore, the infiltration rate calculated in this manner provides good predictions of the average infiltration rate during the entire wetting phase. The water-level-independent infiltration rate is a general feature. It was found in all the 50 studied basins, regardless of the soil sand content, commissioning year, operation conditions and season. The constant infiltration rate law revealed in this study simplifies the prediction of the flooding cycle duration and will facilitate simplified predictive modeling of multiple basins SAT systems. Our research may extend beyond SAT systems, offering insights applicable to other managed aquifer recharge methods, crucial for effective water resource management, ensuring environmental compatibility.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
