[1]高晨晨,孙永利,穆莹,等.城市居民生活污水污染物沉积衰减规律及影响[J].中国给水排水,2023,39(3):67-72.
　GAOChen-chen,SUNYong-li,MUYing,et al.Deposition and Attenuation Law of Pollutants in Urban Residential Domestic Sewage and Its Impact[J].China Water & Wastewater,2023,39(3):67-72.
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城市居民生活污水污染物沉积衰减规律及影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第3期 页码: 67-72 栏目: 出版日期: 2023-02-01
Title:
Deposition and Attenuation Law of Pollutants in Urban Residential Domestic Sewage and Its Impact
作者:
高晨晨， 孙永利， 穆莹， 刘钰， 王诣达， 李思雨， 王金丽,葛铜岗
（中国市政工程华北设计研究总院有限公司，天津 300074）
Author(s):
GAO　Chen-chen， SUN　Yong-li， MU　Ying， LIU　Yu， WANG　Yi-da， LI　Si-yu， WANG　Jin-li， GE Tong-gang
（North China Municipal Engineering Design & Research Institute Co. Ltd.， Tianjin 300074， China）
关键词:
生活污水污染物;  污水管网;  沉积衰减;  污染物收集量;  进水浓度;  提质增效
Keywords:
domestic sewage pollution;  sewage sewer network;  deposition and attenuation;  pollutant collection amount;  influent concentration;  quality and efficiency improvement
摘要:
城市污水管网的运行流速是影响污染物收集处理效能的重要因素。为分析污水在管网输送过程中受沉积作用的影响，以居民源头排放的生活污水为对象，研究污水在较不利流态条件下污染物的沉积衰减规律。结果表明，按照输送距离测算，当沉积时间为10 h时，污水中SS、COD和TP浓度分别下降了61.1%、18.2%和9.3%，NH3-N浓度提高了8.7%，导致COD/TN、COD/NH3-N、COD/TP和COD/PO43--P分别降低了19.9%、24.8%、11.9%和18.0%。由此可见，污水输送过程中污染物的沉降淤积是导致污水处理厂进水浓度偏低、碳氮比失调的重要原因，建议充分考虑管网运行工况对污染物收集处理效能的综合影响。
Abstract:
The flow velocity of urban sewage sewer network is an important factor affecting the efficiency of pollutant collection and treatment. To analyze the influence of deposition on sewage transportation in the sewer system, this paper investigated the deposition and attenuation law of pollutants in domestic sewage discharged from residential sources under unfavorable flow conditions.According to the transportation distance, the deposition time was 10 hours. The concentrations of SS, COD and TP in sewage decreased by 61.1%, 18.2% and 9.3%, respectively, while NH3-N concentration increased by 8.7%. As a result, the COD/TN, COD/NH3-N, COD/TP and COD/PO43--P decreased by 19.9%, 24.8%, 11.9% and 18.0%, respectively. Therefore, the deposition of pollutants in the sewage transportation process was an important cause for the low influent concentration and imbalance of C/N ratio in the sewage treatment plant. It is suggested to fully consider the comprehensive influence of sewer network operating conditions on the collection and treatment efficiency of pollutants.

相似文献/References:

[1]孙永利,郑兴灿,高晨晨,等.城镇居民人均日生活污水污染物产生量测算之方法构建[J].中国给水排水,2019,35(24):1.
　SUN Yong-li,ZHENG Xing-can,GAO Chen-chen,et al.Calculation Method Construction of Daily Domestic Pollutant Production of Urban Residents Per Capita[J].China Water & Wastewater,2019,35(3):1.

更新日期/Last Update: 2023-02-01