苏州市高新区不透水表面雨水径流污染与控制研究汇总.pdfVIP

Master Dissertation of Suzhou University of Science and TechnologyAbstract Abstract With the rapid development of economic and the improvement in the urbanization level,the area of impervious surfaces increases continuously, which brings about even more serious urban stormwater problems.The urban runoff from impervious surfaces, especially at the initial stage of rain, carries volume of pollutants drain to the urban rivers and effects such as ecological damage, environmental pollution.At present, most of cities face the problem of pollution-induced water shortage or water resources shortage, but the rainwater utilization has not even begun in some areas. The region of research in the paper is Suzhou New District, and the analysis was given to the quality of rainfall and runoff at different underlying surfaces, in order to master the characteristics of rainfall runoff pollutant from impervious surfaces. It is significant to provide a basis reference for the development of effective control measures of runoff and rational utilization of rainfall resources to solve the problem of urban rainfall.According to the main types of imervious surfaces of Suzhou, the paper choses the asphalt pavement and three roofs with different materials (cement,tile,asphalt) as typical gathering ground of the urban rainfall runoff. Analysis on the quality of rainfall from four points and the main results of this paper are shown as followed: (1) The roof runoff quality is better than the urban road runoff quality,the roof runoff is made up of oxygen consuming matter and solid particulate matter. And the contamination degree of roof runoff differs greatly with its materia