人工湿地控制暴雨径流污染的实验研究

研究了不同填料，不同植物的人工湿地对暴雨径流中污染物的去除，实验结果表明：（1）以沸石为填料的人工湿地对暴雨径流中的COD，N具有高而稳定的去除率。（2）沸石能高效去除氨氮，并可生物再生，长期保持吸附氨氮能力。（3）N的去除是通过硝化，反硝化作用。植物吸收，微生物的同化作用去除。（4）草蒲和芦苇对N的去除效果没有明显区别。（5）对COD的去除，芦苇好于菖蒲，但菖蒲的除P能力大于芦苇。

Experimental Study on Artificial Wetland for Controlling Stormwater Runoff Pollution

Artificial wetland with different filler and vegetation for treatment of stormwater runoff has been studied.The principal results were: 1) the artificial wetland using zeolite as substrate showed high COD and TN removal over the whole period of study, 2) zeolite in artificial wetland could not only remove ammonia, but also show biological regeneration, 3) nitrogen was removed via nitrification and denitrifica-tion, plant uptake and microorganisms assimilation, 4) for reed and calamus, nitrogen removal showed no difference, and 5), reed has higher COD removing efficiency than calamus ,but for P removal, calamus was higher than reed.