基于水量和水质监测的污水处理厂外水入侵分析  

Analysis of External Water Intrusion of WWTP Based on Wastewater Quantity and Quality Monitoring

作　　者：白加敏 王经波 李长芳 王庆娇 王强 BAI Jiamin;WANG Jingbo;LI Changfang;WANG Qingjiao;WANG Qiang(Shenzhen Water and Environment Group Co.,Ltd.,Shenzhen 518000,China;Shanghai BIOENV Environmental Technology Co.,Ltd.,Shanghai 201203,China)

机构地区：[1]深圳环境水务集团有限公司,广东深圳518000 [2]上海铂尔怡环境技术股份有限公司,上海201203

出　　处：《净水技术》2025年第1期114-119,共6页Water Purification Technology

摘　　要：【目的】为分析南方某污水处理厂雨天进厂水量上升和进厂污染物浓度下降的现象,并溯源其外水入侵原因,为其他地区污水处理厂优化调度提供指导实践。【方法】分别对该厂东西两侧进厂主干管进行水量和水质监测分析,其中,为提高测量精度以及适应管网不同运行状况,采用德国NIVUS集团的互相关流量计做实时流量分析并采集不同降雨条件及不同时段水样作水质监测。【结果】结果表明,雨天东侧进厂箱涵水量较晴天增长56.0%,而西侧进厂主管雨天水量反而比晴天降低19.1%,降雨时因东侧进厂箱涵瞬时流量和流速的增长,在汇集井处对西侧进厂主管来水造成了顶托作用。水量和水质监测结果显示,降雨期间东侧进厂箱涵水量的增加是污水厂进厂水量增加的直接原因。东西两侧进厂主管日流量在晴天占污水处理厂进厂水量的比例为7∶2,而在降雨期间该比例上升为8∶1,两侧进厂主管在降雨期间均存在污染物量损失,东侧进厂箱涵雨天大幅增长的水量得以处理,而西侧进厂主管则因顶托作用,污水无法收集进厂导致进厂污染物量大幅减少。【结论】因此,从整体污染减排的角度,降雨期间应优先保障西侧污水进厂,同时优化降雨期间污水厂进厂调度规则,在保证西侧进厂主管污水全量收集进厂的前提下,合理调度东侧箱涵来水泵站。[Objective]In order to analyze the phenomenon of the increase of influent and the decrease of influent pollutant concentration in a wastewater treatment plant(WWTP)in southern China,and to trace the causes of external water invasion,so as to provide guidance and practice for optimizing the scheduling of WWTPs in other regions.[Methods]The water quantity and quality of the main influent pipes from the east and west sides of the WWTP were monitored and analyzed respectively.To improve measurement accuracy and adapt to different operating conditions of the pipeline network,a cross-correlation flowmeter from the German NIVUS group was used for real-time flow analysis,and water samples were collected for water quality monitoring under different rainfall conditions and different time periods.[Results]The results showed that the water volume of the box culvert entering the WWTP on the east side increased by 56.0%compared to sunny days,while the water volume of the main pipe entering the plant on the west side decreased by 19.1%compared to sunny days.The increase of instantaneous flow rate and velocity of the east inlet box culvert during rainfall caused a jacking effect on the incoming water from the main pipe on the west side at the gathering well.The water quantity and quality monitoring results showed that the increase in water inflow into the east side box culvert during rainfall was the direct reason for the increase capacity of the WWTP.The daily flow rate of the main pipes entering the WWTP on both sides of the east and west sides is 7∶2 on sunny days,while during rainy days,this ratio increases to 8∶1.During the rainfall,there was pollutant loss in the main pipes entering the WWTP on both sides.The influent of the box culvert on the east side which increased significantly on rainy days was treated,while the influent entering the west side was unable to be collected into the WWTP due to the jacking effect,resulting in a significant reduction in the amount of incoming pollutants.[Conclusion]Therefore,from the

关 键 词：水量和水质监测 外水入侵 顶托作用 合理调度 污染减排 

分 类 号：TU992[建筑科学—市政工程]