HUANGZhi-wei,WENJing,CUIFei-jian,et al.Efficiency Analysis of Sewage Collection and Treatment System Based on Water Quantity and Quality[J].China Water & Wastewater,2023,39(1):49-57.
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Efficiency Analysis of Sewage Collection and Treatment System Based on Water Quantity and Quality

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第1期 Page: 49-57 Column: Date of publication: 2023-01-01
Author(s):
HUANG　Zhi-wei1; 2;  WEN　Jing1; 2;  CUI　Fei-jian1; 2;  QIN　Guang-xiong1; 2;  FANG　Huai-yang1; 2;  ZENG　Fan-tang1; 2;  DU　Hong-wei1; 2
（1. State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control， South China Institute of Environmental Sciences， MEE， Guangzhou 510530， China； 2. Guangdong Key Laboratory of Water and Air Pollution Control， Guangzhou 510530， China）
Keywords:
sewage collection and treatment system;  water quantity and quality;  efficiency analysis;  Shahe River basin
Abstract:
From the perspective of watershed management, this paper proposed a method for efficiency analysis of sewage collection and treatment system based on water quantity and quality. The water quantity and quality characteristics of typical drainage households, sewer networks and wastewater treatment plants in Shahe River basin were systematically investigated, the “loss” rate of pollutants along the sewer system was analyzed, the actual collection and treatment rates of sewage and pollutants in each drainage subarea were calculated to identify the key area, so as to provide reference for watershed management and improvement of quality and efficiency. The influent concentration of wastewater treatment plants in Shahe River basin was generally low, and the sewer network was the key factor that caused the “loss” of pollutants along the drainage system, which contributed to the loss rate of 61%-69%. Rainfall had a great impact on the influent quantity and quality of wastewater treatment plants. Some areas did not have the capacity to treat excess mixed wastewater, and overflow pollution was a serious problem in rainy season. The collection and treatment rate of pollutants in wastewater could be used as an important reference for quantitative evaluation of the efficiency of urban sewage collection and treatment system. The collection and treatment rate of sewage in Shahe River basin was calculated to be 71%, and the collection and treatment rates of COD, NH3-N, TN and TP were 59%, 50%, 55% and 62% respectively, which was in line with the water environment quality of the basin and the actual situation of sewer network construction.
Last Update: 2023-01-01