Department of Environmental Engineering and Geodesy, University of Life Sciences in Lublin, Leszczyńskiego 7, 20-069, Lublin, Poland.
Environ Sci Pollut Res Int. 2018 Jan;25(1):952-962. doi: 10.1007/s11356-017-0519-8. Epub 2017 Oct 27.
A decade of observations provided grounds for assessing the operation of one of the few stormwater treatment plants in Poland (system: screens-grit chambers-settler-retention pond) which collects effluents from 471 ha of the city. Among other aspects, the following were evaluated: treatment efficiency, relationship between the quality of treated stormwater and that of waters in the receiving body (the ox-bow lake of the Vistula river), operating stability of key units, significance of the facility for nature. During the assessment, the plant had a positive effect on the quality of stormwater effluents-the content of the analysed pollutants was reduced (more than 80% average efficiency for mineral forms of nitrogen and suspension matter) and oxygen ratios improved (23% increase in the average concentration of dissolved oxygen and more than 50% decrease in 5-day biochemical oxygen demand and chemical oxygen demand). Although the overall assessment of the facility's operation was good, some omissions and operating errors were noted (method of removing retained pollutants, stormwater flow control). Eliminating them is a prerequisite for maintaining the expected reliability of the system. An effect of stormwater ponds on the increase in biodiversity in the poor urbanised landscape has also been observed. The structures, forming a uniform system along with urban green areas, constitute specific enclaves which attract living organisms.
十年的观测为评估波兰为数不多的几个雨水处理厂之一的运行情况提供了依据（系统：筛网-砾石室-沉淀池-滞留池），该处理厂收集了城市 471 公顷面积的污水。除其他方面外，还评估了以下方面：处理效率、处理后雨水水质与受纳水体（维斯瓦河牛轭湖）水质之间的关系、关键单元的运行稳定性、设施对自然的重要性。在评估期间，该工厂对雨水污水质量产生了积极影响-分析污染物的含量降低（氮和悬浮物的矿物形式的平均去除效率超过 80%），氧气比提高（溶解氧的平均浓度增加 23%，五日生化需氧量和化学需氧量减少超过 50%）。尽管该设施的运行总体评估良好，但也注意到了一些遗漏和操作错误（去除滞留污染物的方法、雨水流量控制）。消除这些问题是保持系统预期可靠性的前提。还观察到雨水池塘对城市景观中生物多样性增加的影响。这些结构与城市绿地一起形成了一个统一的系统，构成了吸引生物的特定飞地。
