Practice of quality improvement and efficiency enhancement project for sewage pipe network in a certain area
With the acceleration of urbanization,quality improvement and efficiency enhancement of urban drainage pipe networks has become the key to solving urban water environmental issues.Taking the quality im-provement and efficiency enhancement project of the sewage pipe network in the old urban districts of Xuanwei city in Yunnan province as an example,the technical route and practical effects of the renovation of urban old district drainage pipelines were discussed.Firstly,in response to the complex network of old urban districts,lack of information,low influent concentration of the sewage treatment plant,and high water level operation of the network,a targeted technical solution route was proposed.Through mapping,inspection,investigation and some other measures combined with manual surveys and verifications,an electronic data set of the drainage network was established,and the identified problems were categorized into a problem list.After that,through the imple-mentation of the renovation project,the sewage collection rate was effectively improved,and the collection effi-ciency of the existing drainage pipe network was comprehensively enhanced.For key areas with direct discharge of sewage and pipes misconnection,the problems were classified,and the invasion of external water was quantita-tively calculated,and renovation plans were formulated for each problem.Through the regional renovation project,the dry season sewage discharge was reduced by 3 500 m3/d,the collection rate of sewage in the key management areas was improved,and the water quantity and quality fluctuations within the network were reduced.
万方数据
维普
