村镇污水管网运行关键问题诊断

Key Problem Diagnosis of Village Sewage System Operation

针对我国南方某镇污水管网系统存在的高水位运行、污水处理厂进水COD浓度低等关键问题,基于高程重测、水位测量、水质水量监测等多种方法,对污水管网连接关系、埋设相对位置、相对水位等基础数据进行了分析。结果表明,过河管不合理设计、河水倒灌入侵、自来水入侵为管网现存运行问题的主要原因。

Aiming at the key problems such as high water level of sewage system and low water concentration of the wastewater treatment plant inlet COD in a town of southern China,this paper made analysis of the connection relationship of the sewage network,relative buried depth and water level based on several field measurements such as elevation remeasurement,water level measurement,water quality and quantity monitoring. The results show that the unreasonable design of pipe cross the river,intrusion of river water andtapwater are main reasonsof pipeline systemoperation.