In order to effectively control and treat the initial stormwater pollution caused by the overflow of the drain-age system in the central urban area of megacities,Liedeyong and Shijing River in Guangzhou were selected as typical riv-ers.Based on the analysis of the initial stormwater quality and rainfall characteristics,the sewage absorption capacity of the water area was reviewed,and the intercepting rainfall and pollutant reduction efficiency were compared and analyzed.The intercepting standard for the initial stormwater treatment was proposed.The results show that the standard of initial rain interception should be 8-10 mm in the area of combined flow system and 5-6 mm in the area of split flow system.The research results can provide scientific basis for the early rainwater pollution control in the central urban areas of Guang-zhou and other megacities.
关键词
特大城市/初期雨水/截流标准/纳污能力
Key words
megacity/initial rain/cut off standard/fouling capacity
维普
万方数据