Evaluation of the comprehensive efficiency of the interception pipeline in the urban rainwater pipe network for the initial rainwater collection and storage

Urban runoff pollution has become one of the important limiting factors hindering continuous improvement water environment. In process drainage system reconstruction, evaluation interception pipeline for collection and storage efficiency initial rainwater is an work. Therefore, this study uses analytic hierarchy to establish method containing 4 first-level indicators 10 second-level evaluate comprehensive storage. Taking in a Shanghai as case study, established was adopted it, indexes under rainfall return periods 0.5 year, 1 3 years 5 were calculated. The results indicated that could be well applied effectiveness intercepting pipelines systems, provide technical support planning design urban control projects future.