Application Of Sponge City Technology In Urban Road

At present,there are still many urban water environment pollution problems in domestic at home.The issues of urban road runoff pollution and water eutrophication are particularly prominent,seriously damaging aquatic ecosystem and health of human beings among those problems in which the excesses of nitrogen and phosphorus are the main reasons that lead to the water pollution.In view of this,how to solve the problems of excessive nitrogen and phosphorus in water is very crucial.As the emerging of the modern urban rainstorm management mode,our country combine the advanced foreign storm water management and take different environmental requirements into consideration,then proposed the sponge city which is one of the methods to solve the urban water environment pollution problems in our country.Mainly through the water sampling of rainfall runoff in trial sponge city,the subject effectively solves the urban rainfall runoff pollution problem,providing a practical basis for the future promotion of sponge city technology.Through the knowing of the precipitation,surface water and groundwater distribution in Anhui Province and the understanding of the concept of sponge city,the subject finds out that the Huaihe River Basin is located in the north of Anhui Province and there is little rainfall in urban areas,with groundwater mainly being the urban water source and the surface runoff being small.the area also focus on following the "purifying","infiltration","storage" and "using." waterlogging and runoff pollution Jianghuai hilly areas and polders along the river are serious.so it should be focus on the "infiltration","retention","storage","purifying" and "using" The water source of urban water in XinAn river area is mainly surface water,with abundant surface water resources,good water quality around the city and slight local pollution which focus on following the "retention","infiltration" and draining.Analyzing of the merits and demerits of a demonstration road in the city of Qishan road in the Chizhou,focuses on its issues on water quality and water quantity.The project is divided into five regions by the reconstruction of Qishan road using the comprehensive control technology of source,passenger water and large drainage respectively.The scheme design not only considers the source low impact development of facility control but also considers the problem of large drainage system of the road and it changes the traditional road design ideas to break through the original design of the scope of the catchment of the road,and technical drainage without municipal pipelines,drains,completely fitting the way in which the source,the drainage of the road drainage,having its system innovation;technology source technology and large drainage channel system integration ensure normal runoff control,and it also can effectively control the occurrence of water logging through rapid discharge and prohibit the existing slope for heavy rainstorms.The characteristics of rainfall runoff pollution in sponge facilities and the water quality after the facilities are discussed in three aspects based on the data of water quality and rainfall of two actual rainfall events on May 23,2017 and August 13,2017 as follows: The concentrations of COD,TN,TP,Cu and SS in rainfall runoff were measured experimentally,and the instantaneous concentration changes of various runoff pollutants with rainfall duration were plotted,and the effects of various pollutants under different rainfall intensities and under different conditions were analyzed and the concentrations of pollutants in each terminal were measured through experiments to explore the reduction effect of pollutants of Qishan road with sponge facilities before and after passing through the facilities.