污水截流系统问题分析及改良策略

Problem Analysis and Strategies for Improvement of Sewage Interception System

污水截流系统在合流制排水系统污水截流和雨水排水系统混接污水截流中均有广泛应用,结合污水截流系统设计和运行中的影响因素,比较了截流系统和截流井类型及特点,分析了污水截流量失控、截流污水浓度偏低、污水逆向流出截流系统、河水倒灌、新增内涝区域等问题及原因。在此基础上提出"理想污水截流系统"模型,作为污水截流系统设计的参照标准,并进一步介绍了污水截流系统中新型截流设施、防倒灌设施、限流设施等,对当前各地的污水截流系统设计具有积极参考意义,使污水收集做到应收尽收,又能提质增效。

The sewage interception system is widely used in the sewage interception of the combined drainage systems as well as the mixed-sewage interception of the rainwater drainage systems.Combined with the influence factors in the design and operation of the sewage interception system,the types and characteristics of the interception system and the interception well are compared,the problems and causes of uncontrolled sewage interception flow,low concentration of intercepted sewage,sewage outflowing the interception system,river water inversion,newly-added waterlogged areas are discussed.Thereby,we proposed the"ideal sewage interception system"model as a reference standard for sewage interception system design,and further introduced the new interception facilities,backflow prevention facilities,and flow limiting facilities in the sewage interception system.This work has a positive reference for the current sewage interception system design in various localities,so that the sewage collection can achieve a full collection as well as improvement of the quality and efficiency.