Study on the path of combined sewer renovation and overflow control under the background of sponge city construction
In China the number of combined drainage pipes is large,the construction situation is complex,and the operation problem is prominent.It has become the key problem restricting the improvement of urban water environment quality.Under the background of systematized sponge city construction,the renovation of combined sewer system and the overflow pollution controlling have become the key task of many cities.According to the statistical yearbook data of the urban construction for recent years,the quantity,distribution and change of the urban combined drainage network are analyzed.The paper summarizes the status and existing problems of Chinese urban combined sewer system and relevant requirements in the current sponge city construction,control of black and smelly water bodies,comprehensive control of waterlogging,sewage quality and effi-ciency improvement,etc.On this basis,the definition and evaluation method suitable for Chinese urban combined sewer system are put forward.Combined with the problems existing in the process of promoting the relevant work in various cities,the path of combined system renovation and over-flow control under the background of sponge city construction is put forward,that is,the system-atic scheme of combined system renovation and overflow pollution control,and the working process and technical points of the systematic scheme are clarified.
Sponge cityBlack and smelly waterCombined sewer systemOverflow pollution controlSystematic scheme
万方数据
维普
