Middleton John R, Barrett Michael E
Center for Research in Water Resources, University of Texas, Austin, TX 78712, USA.
Water Environ Res. 2008 Feb;80(2):172-8. doi: 10.2175/106143007x220842.
The objective of this research was to modify an extended detention basin to provide batch treatment of stormwater runoff. An automated valve/controller was developed and placed on the outlet of a detention basin in Austin, Texas, which allowed the water quality volume to be retained in the basin for a preset length of time. The influent and effluent of the modified basin were monitored for total suspended solids (TSS), nutrients, chemical oxygen demand (COD), and total and dissolved metals. Statistically significant removal of total metals, COD, total nitrogen, total phosphorus, and TSS was observed, with a discharge event mean TSS concentration of 7 mg/L and a TSS removal efficiency of 91%. The modified basin has substantially better pollutant removal than conventional extended detention basins and is comparable with that of Austin sand filters, which are a common structural stormwater treatment system in the Austin area. The valve also can be used to isolate hazardous material spills.
本研究的目的是对一个扩展滞留池进行改造，以实现对雨水径流的间歇式处理。开发了一种自动阀门/控制器，并将其安装在德克萨斯州奥斯汀市一个滞留池的出水口，这使得水质水量能够在池中保留预设的时长。对改造后滞留池的进水和出水进行了总悬浮固体（TSS）、营养物质、化学需氧量（COD）以及总金属和溶解金属的监测。观察到总金属、COD、总氮、总磷和TSS有统计学意义的去除，排放事件的平均TSS浓度为7毫克/升，TSS去除效率为91%。改造后的滞留池在污染物去除方面比传统的扩展滞留池有显著改善，与奥斯汀砂滤池相当，奥斯汀砂滤池是奥斯汀地区常见的结构性雨水处理系统。该阀门还可用于隔离危险物质泄漏。
