Institute of Civil Engineering, Warsaw University of Life Sciences (WULS-SGGW), Nowoursynowska 159 St, 02-776, Warsaw, Poland.
Environ Sci Pollut Res Int. 2023 Jan;30(5):13256-13269. doi: 10.1007/s11356-022-23092-8. Epub 2022 Sep 21.
The idea of water balance calculations within the landfill is to determine the distribution of water input and output, and finally the volume of leachate generated. The scope of this data is essential for rational planning of water and wastewater management, and designing leachate drainage network and leachate treatment systems. The aim of this study was to assess the possible amounts of leachate generation regarding ten different scenarios of landfill sealing systems. The calculations were performed using the Hydrologic Evaluation of Landfill Performance (HELP) model. It was revealed that the greatest share among the components of water balance in the landfill has precipitation (on average 509 mm in the 5-year period of simulation), together with evapotranspiration (on average 391 mm in the 5-year period of simulation). The study shows that the minimum amount of leachate (797-803 m/year) occurs when the best placement quality (=5) is regarded for the geomembrane installed in the bottom of the landfill. The maximum leachate generation (830 m/year) was found for those scenarios in which only three layers of bottom sealing systems were adopted, with the worst placement quality (=1) assigned to geomembranes. The results of this study confirm that the application of multilayer sealing systems has visible impact on the reduction of leachate generation of around 33 m/year.
垃圾填埋场内的水量平衡计算旨在确定水分的输入和输出分布，最终确定产生的渗滤液量。该数据范围对于合理规划水资源和废水管理、设计渗滤液排水网络和渗滤液处理系统至关重要。本研究旨在评估十种不同封场系统下渗滤液产生的可能量。使用水文评价填埋场性能（HELP）模型进行计算。结果表明，在填埋场水量平衡的各个组成部分中，降水（模拟的 5 年内平均为 509mm）和蒸发蒸腾（模拟的 5 年内平均为 391mm）占最大份额。研究表明，当在垃圾填埋场底部安装的土工膜质量最佳（=5）时，渗滤液的产生量最小（797-803m/年）。当仅采用三层底部封场系统且土工膜质量最差（=1）时，渗滤液产生量最大（830m/年）。本研究结果证实，应用多层封场系统可显著减少约 33m/年的渗滤液产生量。
