School of Engineering, Computer Science, and Mathematics, West Texas A&M University, Box 60767, Canyon, TX, 79016, USA.
Department of Agricultural Sciences, West Texas A&M University, Box 60998, Canyon, TX, 79016, USA.
Environ Sci Pollut Res Int. 2020 Feb;27(6):6112-6125. doi: 10.1007/s11356-019-07049-y. Epub 2019 Dec 21.
Determining alternative water sources to meet municipal water demands is important when availability is limited. The purpose of this study was to demonstrate a means for water planners to estimate the amount of combined sanitary wastewater and storm water that they might already be capturing through open air oxidation ponds. Increased understanding of the quantity of water that is already available could help water planners to better envision optimal water reuse scenarios. Using water and climate data on oxidation ponds in these three cities within the Texas Panhandle from 2010 to 2014, we evaluated water quantities which would be available for potential reuse. From the net monthly wastewater volumes values, the study also considered if per capita demand could have been met by reusing the wastewater. The study found wastewater volumes were lower in fall and winter months and much higher in spring and summer months. If a city considers reusing wastewater, blue water (groundwater) extraction could be reduced by as low as 45-50% in one city to as high as 100% in another. Water planners in similar environments and wastewater treatment systems may find this demonstration of potential reuse water quantity encouraging for better meeting their own water demands and enhancing water supply resiliency.
当可用水资源有限时，确定替代水源以满足市政用水需求非常重要。本研究旨在为水资源规划者展示一种方法，以估算他们可能已经通过露天氧化塘捕获的综合卫生废水和雨水的量。更好地了解现有的可用水量可以帮助水资源规划者更好地设想最佳的水再利用方案。本研究利用德克萨斯狭长地带这三个城市 2010 年至 2014 年的氧化塘的水和气候数据，评估了可能可用于潜在再利用的水量。从净月污水量值来看，本研究还考虑了是否可以通过再利用废水来满足人均需求。研究发现，污水量在秋季和冬季较低，而在春季和夏季较高。如果一个城市考虑再利用废水，一个城市的蓝水（地下水）抽取量可减少 45-50%，另一个城市可减少高达 100%。在类似的环境和废水处理系统中，水资源规划者可能会发现这种潜在再利用水量的演示令人鼓舞，因为这可以更好地满足他们自己的用水需求并提高供水弹性。
