摘要
针对长江流域某片区污水系统地下水、雨水入流入渗造成污水处理厂进水量上升、进水COD浓度下降的现象,在实施排水系统提质增效过程中,基于现场实地调查和其他地区的评估经验,采用经验值法、现场试验法和水质特征因子法评估该片区旱天的地下水理论入渗量,通过典型旱、雨天水量对比分析雨天入流入渗量,最后计算得到污水处理厂在旱、雨天情景下的日均进水量。结果表明:该片区污水管道每千米管长地下水入渗量为67.0 m^(3)/d,雨水入流量为71.6 m^(3)/d;污水处理厂旱天进水均值为4.07万m^(3)/d,雨天为5.15万m^(3)/d。该结果可为后续提质增效项目的开展和整治效果评估提供理论依据,并为片区排水系统的日常运维提供参考。
The inflow and infiltration in the sewer system in a certain area of the Yangtze River Basin caused a significant increase of water inflow and decrease of influent concentration of the wastewater treatment plant.The project of improving the quality and efficiency of the sewer system was implemented,and the area was systematically rectified with“one plant,one policy”.During the process,based on the evaluation experience in other areas and onsite field investigation,the theoretical range of groundwater infiltration in dry days in the area was evaluated by the empirical value method,field test method and water quality characteristic factor method.The inflow and infiltration of rainwater in the area were calculated,and the theoretical inflow of the wastewater treatment plant in the area under drought and rain conditions was finally calculated.The results show that the average groundwater infiltration amount per kilometer of the wastewater pipeline in this area is 67.0 m^(3)/d,and the rain-induced inflow amount is 71.6 m^(3)/(km·d);the average influent of the wastewater treatment plant is 40,700 m^(3)/d in dry days and 51,500 m^(3)/d in rainy days.The results can provide a theoretical basis for the subsequent quality and efficiency improvement projects and the evaluation of the improvement effect,and provide a reference for the daily operation and maintenance of the drainage system in the area.
作者
黄荣敏
张浩
成浩科
刘卡
张爱红
丁睿
郭帅
HUANG Rongmin;ZHANG Hao;CHENG Haoke;LIU Ka;ZHANG Aihong;DING Rui;GUO Shuai(Yangtze Ecology and Environment Co.,Ltd.,Wuhan 430062,China;College of Civil Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《水利水运工程学报》
CSCD
北大核心
2023年第4期107-113,共7页
Hydro-Science and Engineering
基金
中国长江三峡集团有限公司科研项目(202103355)
长江生态环保集团有限公司科研项目(HB/AH2021039)
安徽省重点研发计划项目(202104i07020012)。
关键词
排水系统
外来水
入流入渗
污水处理厂
sewer system
extraneous water
inflow and infiltration
wastewater treatment plant
