Study On Controlling Rainwater Runoff On Campus

Campus as a large urban water supply networks user nodes with large quantities of water and concentrate characteristics. In addition, the drainage network is an important control point, the campus is also a very large displacement, when the sewer system receiving storm water runoff, the storm struck the campus of the rain often can not be discharged in the case of the campus area, resulting in the campus plaza was flooded road. Campus as well the planning and accumulation of the flow of stormwater runoff to use, you can not only ensure the campus when the storms hit, the normal order, you can also change the waste into water, add water on campus. In this paper, the new campus of Tianjin Industrial University for the study, carried out a typical school district and regional variation of rainfall runoff pollution studies, campus storm water runoff drainage system simulation and optimization studies and discussions with campus campus water use characteristics of the measures and methods.Through research projects, and achieved some results. Mastered the campus area runoff on different land surface characteristics and the law: the best water quality of roof runoff, surface runoff water quality is poor and playgrounds; roof rainwater washed with a good initial effect, and the effects of road runoff erosion as the roof rain erosion effects are obvious; pollutants in stormwater runoff has a certain relevance. In addition, the use of SWMM software for the new campus of Tianjin Polytechnic University, none of the drainage system after treatment, stormwater drainage process simulated the campus. Found in the rainfall return period of 2 years and 5 years part of the pipe with more than economic flows phenomenon. Through the campus area stormwater drainage system optimization, re-simulate the return period of 5 years when rainfall drainage process, the result is better. Campus environment with the characteristics of the proposed rainwater harvesting scheme. Playground and the road through the wetlands stormwater treatment, water supply as a landscape water; flow roof rainwater collection suggested abandoning the early rain, rain abandoned flow Kean 20 minutes before the formation of runoff water to identify, collect roof rainwater through a filter sterilized post-processing can be reused living in sanitary ware and other miscellaneous water and so on.In this paper, the campus stormwater runoff water quality and stormwater runoff control, for more in-depth research and management control and storm water runoff on campus to use a certain reference value.