摘要
由于城市排水管道沉积物易引发管道堵塞、超负荷排放、早期溢流和大量污染物进入受纳水体等一系列问题,开展排水管道沉积物的研究、量化沉积污染物污染负荷、研究沉积物的运移规律对管道出水水质的改善具有重要意义。阐述了排水管道沉积物的来源、构成特性及危害,综述了国内外对管道沉积物的基础性研究,主要介绍了排水管道沉积物冲刷、淤积和污染负荷模型的研究进展,并根据我国排水管道的现状进一步分析了该领域的研究重点及难点。
This paper would like to present a research review on the advances and prospects of the choke with sediment silt due to the confluence of the combined sewer overflow （CSO） in the rainy sea- sons. Under heavy rainfall conditions, it is often the case that the overflow and clogs of the rain-water in-sewer become an important reason for the deterioration of urban water quality, including large amounts of toxic and hazardous pollutants penetrating into the water bodies directly, which may not only severely damage the regular wa- ter environment, but also endanger human health. With the increase of the external sludge sources, the release of in-sewer pollution stocks under the runoff transport is easily turning to be the internal sources of pollution and a serious impact on the water body. Therefore, it has become an urgent need to study how to treat the sediment silt of the drainage channels by properly assessing the pollution load and study the regularity of the sediment movement and transfer manner so as to reduce such kinds of pollution of urban water system. In order to solve the above said problem, the paper has first of all described the sources of sewer solids and analyzed the compositions and chemical features of the pollutants and the potential hazards of the sediments in the drainage pipes, with our stress of our study put on the progress of erosion model, siltation model and pollution load model at home and abroad. Moreover, we have analyzed the priorities and difficulties in treating such in-sewer sediments. Since so far there hasn＇t yet exist- ed any systematic study on treating sewer sediments, nor highly ma- ture measures than what we have done in the field. According to the current situation of China＇ s drainage system, it is of great signifi- cance to effectively control the urban water pollution by strengthening the state control rules for sediment deposition and erosions, and it is in this aspect that we have put forward some suggestions, wishing to provide a valuable starting points and grounds for further discussion in solving the problem of the water choke and sediment silt pollution control in the country.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2013年第6期90-95,共6页
Journal of Safety and Environment
基金
国家水体污染控制与治理科技重大专项(2011ZX07301-004-01)
北京市城市排水管道沉积物控制与管理对策研究项目(13CSC010)
关键词
环境工程学
管道沉积物
合流制溢流
沉积物运输模型
控制措施
environmental engineering
sewer sediments
combinedsewer overflow
sediment transport model
control measures
