The Ecological Purification Of Rain Water In The Initial Stage Of The Road Based On The Concept Of Sponge City Design

With the acceleration of urbanization,the area of urban built-up area is increasing.The type of the original natural underlying surface of the city has changed greatly.The increase of the area of buildings and roads makes the proportion of the impervious area of the city increasing and the infiltration capacity of surface water greatly weakened.The natural hydrological cycle in urban areas has been destroyed.Water resources are faced with water pollution problems,especially in the initial period of Rain Water pollution,in addition to the shortage and uneven distribution of water resources.Some studies have shown that Rain Water non-point source pollution is an important reason for the deterioration of inland water environment quality,and the pollutant quality concentration of Rain Water in the early stage of urban road is much higher than that of domestic sewage.Chinese scholars have done a lot of research on this,but the study of Rain Water in the early stage of the road is more scattered.Lack of further in-depth and systematic research.The research theme of this paper comes from the PPP project supported by the tutor team,and the research object is Bei Jing River Li Tai Lu in Suzhou Hi-tech Zone.This paper mainly explores the ecological purification method of Rain Water in the initial stage of the road based on the concept of sponge city,studies and analyzes the pollution situation of Rain Water in the initial stage of the road,and takes an effective way to purify Rain Water in the initial stage of the road.It is of great significance to the construction of sponge city.This paper first introduces the background of the research,including the concept of sponge city,the current situation of water resources in China.The current situation of our road Rain Water and our country's initial Rain Water.Then we study the domestic and foreign road initial Rain Water related research situation.In the main research content,the whole article comprehensive use of literature research method?case analysis?project practice method and field research method.Firstly,combined with the sponge city and urbanization background,the paper mainly expounds the related concepts of Rain Water in the initial stage of the road.The origin of the main pollutants and the main pollutants of Rain Water in the early stage of the road and the necessity of carrying out the ecological purification of Rain Water in the initial stage of the road were expounded,and the method of Rain Water runoff in the initial stage of the road purification was expounded,and the sponge city was studied.This paper analyzes and summarizes the application of the main technical means to the purification of Rain Water in the city.In the study of Rain Water's ecological design case in the early stage of Li tai Road of Bei Jing River in Suzhou.First of all,the basic situation of Suzhou is analyzed to understand the characteristics of climate,rainfall and soil in Suzhou.This paper studies the main pollutants in the Rain Water runoff in the early stage of Li Tai Road in Suzhou and the necessity of the ecological purification of Rain Water in the initial stage of the road.This paper analyzes the unfavorable situation around the design site,and uses HTCAD software to collect the amount of water and the collection of the site along the Li Tai Road.The capacity of the pool,according to the needs of the site to adjust the collection pool,focused on the site of the collection pool of the Li Tai Road in the early Rain Water purification approach.This paper gives the expected effect of Rain Water purification in the initial stage of the road,and then introduces the experience of the later maintenance and management of the site.It is concluded that the way of Rain Water purification in the initial stage of the site road should be carried out with concrete methods according to the landscape effect.Finally,the shortcomings of the paper research are summarized.