Marine Sciences Department, University of the Aegean, Greece.
Department of Civil and Environmental Engineering, University of Connecticut, USA.
Sci Total Environ. 2018 Jun 1;626:875-886. doi: 10.1016/j.scitotenv.2018.01.160. Epub 2018 Feb 19.
Managed Aquifer Recharge (MAR) is becoming an attractive water management option, with more than 223 sites operating in European countries. The quality of the produced water, available for drinking or irrigation processes is strongly depended on the aquifer's hydrogeochemical characteristics and on the MAR system design and operation. The objective of this project is the assessment of the operation efficiency of a MAR system in Cyprus. The coupling of alternative methodologies is used such as water quality monitoring, micro-scale sediment sorption experiments, simulation of groundwater flow and phosphate and copper transport in the subsurface using the FEFLOW model and evaluation of the observed change in the chemical composition of water due to mixing using the geochemical model PHREEQC. The above methodology is tested in the Ezousa MAR project in Cyprus, where treated effluent from the Paphos Waste Water Treatment Plant, is recharged into the aquifer through five sets of artificial ponds along the riverbed. Additionally, groundwater is pumped for irrigation purposes from wells located nearby. A slight attenuation of nutrients is observed, whereas copper in groundwater is overcoming the EPA standards. The FEFLOW simulations reveal no effective mixing in some intermediate infiltration ponds, which is validated by the inverse modeling simulation of the PHREEQC model. Based on the results, better control of the infiltration capacity of some of the ponds and increased travel times are some suggestions that could improve the efficiency of the system.
含水层人工补给（MAR）正成为一种极具吸引力的水资源管理选择，欧洲已有 223 个以上的场地在运营。补给水的质量，即饮用水或灌溉用水的质量，强烈依赖于含水层的水文地球化学特征以及 MAR 系统的设计和运行。本项目的目的是评估塞浦路斯 MAR 系统的运行效率。采用了水质监测、微尺度沉积物吸附实验、地下水流动模拟以及使用 FEFLOW 模型进行地下水中磷酸盐和铜运移的模拟、以及使用 PHREEQC 模型评估由于混合而导致的水化学成分变化的评估等替代方法进行耦合。该方法在塞浦路斯 Ezousa MAR 项目中进行了测试，在该项目中，从帕福斯废水处理厂处理后的废水通过河床沿线的五组人工池塘注入含水层。此外，还从附近的井中抽取地下水用于灌溉。尽管观察到营养物质有轻微衰减，但地下水中的铜含量超过了 EPA 标准。FEFLOW 模拟表明，一些中间渗透池塘中没有有效的混合，这通过 PHREEQC 模型的反向模拟得到了验证。基于这些结果，一些建议可以提高系统的效率，例如更好地控制一些池塘的渗透能力并增加水流时间。
