摘要
管道沉积物会影响排水管道的排水容量,在溢流排放下会造成水体污染,是目前合流制排水区域河道黑臭的重要原因之一。该文采用管道沉积物沉积负荷模型,结合南京市主城区管网分布数据,计算了主城区三大污水处理系统管网沉积负荷,并对三大污水处理系统沉积负荷差异进行了分析。结果显示,主城区管道COD沉积负荷与COD实际处理量占比为6.72%,其中江心洲污水处理系统因管网结构差、管道密度大,管道COD沉积负荷占比达7.68%。
The pipe sediments will affect the drainage capacity of pipeline, and even cause water pollution under the overflow discharge conditions ,which is one of the important reasons of black smelly river in the combined sewer area.This paper used the pipeline sediment load model, combined with the pipeline data of Nanjing urban area, calculated the pipeline sediment loads of three sewage treatment system, and then ana- lyzed the differences between them. The results shows that, the ratio of COD pipeline sediment loads of Nanjing urban area to the actual treat capacity reaches 6.72%, while the ratio of Jiangxinzhou sewage treatment system reaches 7.68%,maybe reasons for the worse pipeline structures and higher densities.
出处
《安徽农学通报》
2015年第9期83-86,共4页
Anhui Agricultural Science Bulletin
关键词
污水管网
管道沉积
模型计算
Sewage pipeline
Pipeline sediments
Model calculation
