Study on the Control Performance of Rainwater Quality in the Ini-tial Stage of Urban Runoff by New Environmentally Friendly Rainwater Pass

Abstract

In view of the current situation of gully in China, new type of environmentally-friendly gully with anti-mosquito and odor-reducing function has been developed. The control performance of new gully on the initial rainwater pollutants under the condition of different filter material ratio and filter bag thickness. The results show that the new environmentally-friendly gully has better removal effect of various pollutants in the initial rainwater under the condition of 1:3 filter material and 3cm filter bag. The removal rate of SS is over 80%, total nitrogen the removal rate is above 75%, and the removal rate of COD and total phosphorus is over 70%.