Water Environ Res. 2014 May;86(5):387-97. doi: 10.2175/106143013x13789303501920.
This study compares the performance of a field bioretention cell with and without an internal water storage (IWS) layer for treating highway runoff. Both synthetic and natural runoff tests were conducted. Hydraulic performances on peak discharge reduction and detention time extension were measured. Pollutant removal efficiencies were evaluated for total suspended solids (TSS), copper (Cu), lead (Pb), zinc (Zn), total nitrogen, nitrate, ammonia, total phosphorus, and orthophosphate phosphorus. Pollutants in soil media were measured. Results reveal that both IWS and non-IWS designs reduced peak discharge and extended detention time, while the IWS design performed better. For water quality performance, the non-IWS design removed TSS, Cu, Pb, Zn, and total phosphorus to varying degrees of efficiency, but total nitrogen removal was minimal. The IWS layer significantly improved removal efficiencies for TSS, Cu, Zn, nitrogen, and phosphorus. Soil media accumulated some metals over time.
本研究比较了具有和不具有内部储水层（IWS）的野外生物滞留池处理公路径流的性能。进行了合成和天然径流测试。测量了峰值排放减少和停留时间延长的水力性能。评估了总悬浮固体（TSS）、铜（Cu）、铅（Pb）、锌（Zn）、总氮、硝酸盐、氨、总磷和正磷酸盐磷的去除效率。测量了土壤介质中的污染物。结果表明，IWS 和非 IWS 设计都减少了峰值排放并延长了停留时间，而 IWS 设计的效果更好。对于水质性能，非 IWS 设计在不同程度上去除了 TSS、Cu、Pb、Zn 和总磷，但总氮去除效果最小。IWS 层显著提高了 TSS、Cu、Zn、氮和磷的去除效率。土壤介质随时间积累了一些金属。
