城市污水治理中截流倍数的影响研究

通过城市有代表性地段的降雨量、溢流量的实际测定和研究 ,分析截流倍数对污水治理工程实施和经济效益的影响 ,确定了广州市污水及雨水的截流倍数。增加城市绿地的透水面积 ,加强管道、渠箱和街道的清洗维护 ,充分利用自然水体和相关城市设施的调蓄能力可有效降低截流倍数的取值 ,降低工程造价

Study on interception factor in urban wastewater treatment

The rainfall and run-off at representative site in urban area are measured in field. By this way the influence of interception factor (IF) of rainwater and wastewater on the execution and economical benefit of wastewater treatment project is discussed and the applied IF for Guangzhou City is determined. The access value of IF may be decreased in case when the infiltration of green belt in the urban area increases, the rainwater line and street are cleaned and the rainwater retention capacity of nature water bodies and municipal utilities are utilized fully. Of course in this time the investment of the project will be saved.