Study On The Characteristics And Pollution Control Of Municipal Sewage Pipe Network In Lecong

The construction of sponge city and smelly water remediation is the focus of city construction and management of rivers in recent years. Closure of the confluence system pipe in the rain, a lot of rain water flooding pipeline network and more than closure multiples of rainwater and sewage pipe mixed sewage overflow, directly into nearby bodies of water. Complex river network of Pearl River Delta, rainfall is rich, is the precondition of overflow pollution and backward part pipeline due to mismanagement and even clear overflow phenomenon happens. Lecong Town is the Pearl River Delta is a typical intercepting confluence of town, sunny and rainy days will cause overflow, Creek black smelly situation serious. The purpose of this study is through the monitoring of sewage overflow water that change regularity of the overflow pollution, finds out the specific reasons cause overflow, and puts forward the control measures of Lecong overflow pollution, in order to achieve the purpose of smelly black Creek remediation. The topic for the Pearl River Delta city control Overflow Pollution and reduce non-point source pollution study provides basic data, also can be used for the Pearl River Delta region confluence of pipe network transformation, black smelly water remediation and sponge city construction provides examples for reference.To understand Lecong overflow pollution regulation, it is necessary to Lecong sunny days and rainy days overflow events of water quantity and water quality monitoring:selected Lecong Town Industrial Area, commercial area and the living area overflow pollution is more serious in the three sampling points, respectively, in the sunny day were two cycle monitoring, rainy days and a total of of three sampling points were eight single rainfall event monitoring. In order to find out the reasons for the overflow of Lecong Town, and put forward the corresponding transformation measures, it is necessary to develop a detailed scheme of the Lecong town of pipe network to conduct in-depth research.Overflow pollution monitoring results show that Lecong sunny overflow pollutant concentration is mainly affected by the impact in the daily life of the residents. At the same time, overflow water quality and quantity of the sewage situation have seasonal, generally speaking, summer sewage overflow quantity and winter sewage overflow concentration is high. During the Lecong town rainfall peak of pollutant concentration appeared in the early years of the 20 min; after the pollutant amount of accounting is also found that the output of the overflow pollutants rainfall early 20 min on the river accounted for relatively large, up to 66%; the rainfall intensity for the rain, the overflow pollutant concentration changed little even more than sunny Overflow Pollution decreased, rate of flow is decreased; the rainfall intensity is moderate, flow increased obviously and the overflow pollutant concentration decreased, and the flow is reduced, the pollutant concentration was increased; rainfall intensity for heavy rain and heavy rain, the overflow flow was increased while the overflow pollutant concentration also increased significantly.The pipe network of Lecong town of in-depth research Lecong sunny overflow pollution is due to the creek water intrusion into the pipeline, resulting in sewage can not be normal delivery to the sewage treatment plant and from the nearest sewage overflow into a body of water. At the same time, the river water also directly affects the production of rain overflow. It is concluded that the measures to control the pollution of sewage overflow are mainly to solve the problem of the water flowing into the pipe network. In view of the various problems in the sewage pipe network of Lecong Town, combined with the actual situation, the feasible measures to control the Overflow Pollution in Lecong town are put forward.