[1]王伟,丁永伟,尤岚,等.分流制排水系统下降雨对污水处理厂运行的影响[J].中国给水排水,2025,41(1):9-15.
　WANGWei,DINGYong-wei,YOULan,et al.Impact of Rainfall on Operation of Wastewater Treatment Plants in Separate Sewer Systems[J].China Water & Wastewater,2025,41(1):9-15.
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分流制排水系统下降雨对污水处理厂运行的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第1期 页码: 9-15 栏目: 出版日期: 2025-01-01
Title:
Impact of Rainfall on Operation of Wastewater Treatment Plants in Separate Sewer Systems
作者:
王伟1， 丁永伟1， 尤岚1， 黄继会1， 马九利2， 徐守强3
（1.苏州市排水有限公司，江苏 苏州 215006；2.苏州苏水环境监测服务有限公司，江苏 苏州 215100；3.南京水务集团有限公司，江苏 南京 210002）
Author(s):
WANG　Wei1， DING　Yong-wei1， YOU　Lan1， HUANG　Ji-hui1， MA　Jiu-li2， XU　Shou-qiang3
（1. Suzhou Drainage Co. Ltd.， Suzhou 215006， China； 2. Suzhou Su Shui Environmental Monitoring Service Co. Ltd.， Suzhou 215100， China； 3. Nanjing Water Group Co. Ltd.， Nanjing 210002， China）
关键词:
（1.苏州市排水有限公司; 江苏 苏州 215006; 2.苏州苏水环境监测服务有限公司; 江苏 苏州 215100; 3.南京水务集团有限公司; 江苏 南京 210002）
Keywords:
separate system;  low water level;  rainfall;  sewer network;  process model;  biological response
摘要:
降雨引发的入流入渗会使污水处理厂进水量大幅上升，并稀释排水系统收集的污水，造成进厂污染物浓度降低，进而影响污水处理效率。研究揭示了分流制污水管网在不同液位运行条件下，管道冲刷作用对COD、SS等污染物浓度的影响。在保持泵站管网恒液位条件下，降雨量在5~10 mm时，每1 mm降雨量对应水量增加3%~10%，且降雨量越大，增幅越明显。工艺模拟结果显示，降雨期间污水处理厂进水量增加，进水浓度下降，污泥向二沉池转移，出水污染物浓度呈上升趋势。峰值处理能力分析表明，在降雨条件下AAO工艺系统较改良型交替工艺系统更稳定。
Abstract:
Rainfall?induced inflow and infiltration can cause a significant increase in the influent volume of wastewater treatment plants(WWTPs), and dilute the collected sewage of the drainage system, resulting in a decrease in pollutant concentrations at the plant, which in turn affects the efficiency of wastewater treatment. Research has revealed the impact of pipeline scouring on the concentration of pollutants such as COD and SS under different liquid level operating conditions of a separate sewer network. Under the condition of maintaining a constant liquid level in the pump station and pipeline, when the rainfall was between 5 mm and 10 mm, each 1 mm of rainfall corresponded to a water volume increase of 3% to 10%, and the greater the rainfall, the more significant the increase. Simulation results of wastewater treatment processes showed that during rainfall, the influent volume of the WWTP increased, the concentration of influent quality decreased, sludge was transferred to the secondary sedimentation tank, which in turn affected the effluent quality. As the influent volume increased, the effluent concentration of the WWTP showed an upward trend. Peak capacity analysis indicated that the AAO process system of the WWTP was more stable under rainfall conditions compared to the modified alternating process system.
更新日期/Last Update: 2025-01-01