基于污水处理厂进水浓度提升的排水系统调查和评估

Investigation and Assessment on Urban Drainage System Based on the Improvement of Inlet Concentration of Sewage Treatment Plant

提升污水处理厂进水浓度、实现城镇排水系统提质增效的关键基础是对排水系统进行全面的调查和科学的评估。以赣东北某市第二污水处理厂污水收集片区排水系统调查项目为例,首先对城市基础资料进行分析,再对城市排水系统进行系统的“点、线、面”调查,通过运用节点水量和水质检测、管道QV检测和CCTV检测、管网普查及排水用户调查等方法,全面摸清排水系统存在的主要问题,在此基础上实施系统的工程措施进行“收污水”和“挤清水”。同时对排水管网的设计、施工和后期维护提出科学建议,以解决污水直排、污水外渗、外水入流入渗等问题,从而提升污水处理厂进水浓度,实现城镇排水系统提质增效的目的。

That investigation and scientific evaluation of urban drainage system is key basis to improve inlet concentration of sewage treatment plant and advance quality and efficiency of the urban drainage system simultaneously.The drainage system in the sewage collection area of 2rd sewage treatment plant of a city in the northeast of Jiangxi province was taken as an example. Basic urban dates was analyzed. Then, investigation from point, line and plane were systematically carried out. The main problems of the drainage system were found by node water volume and water quality inspection, pipe QuickView(QV) inspection, closed-circuit television(CCTV) inspection, pipe network detection and users survey. Construction measures of collecting sewage into sewerage system and exculding clean water from sewerage system were suggested. The advice on the design, construction and maintenance of the sewage pipeline were proposed as well to solve the problems including sewage direct discharge, sewage leakage and inflow and infiltration of clean water. Consequently, inlet concentration of sewage treatment plant was improved as well as advancing quality and efficiency.