ZOUAn-ping.Numerical Simulation of Design Volume of Combined Sewer Overflow Storage Tank[J].China Water & Wastewater,2022,38(5):116-121.
合流制溢流污染调蓄池设计容积数值模拟
- Title:
- Numerical Simulation of Design Volume of Combined Sewer Overflow Storage Tank
- Keywords:
- combined sewer overflow (CSO); initial rainfall; storage tank; SWMM
- 摘要:
- 按照现有规范计算雨水调蓄池的容积，无法对调蓄后的截污效果进行有效评估。以SWMM为计算工具，通过数值模拟，可以针对具体的流域分析降雨强度、调蓄池容积对污染物的截留效果。以深圳市龙岗区某流域为研究对象，设定不同强度的初期降雨深度，模拟不同初雨径流流量过程和污染物冲刷过程，并对6种污染物（COD、SS、TN、TP、BOD5、NH3-N）累积收集量和调蓄池容积的关系进行数值模拟。结果表明，初雨雨量的差异性对污染物冲刷峰值和总量不具有倍数关系；初期冲刷效应按照递减排序为TN >COD>BOD5>NH3-N>SS，TP没有明显的初期冲刷效应；调蓄容积不低于浓度峰值对应的容积，综合考虑多个污染物的控制效果后可以适当放大；本案例中，调蓄池污染物浓度在峰值之后呈现先快后慢的下降趋势，当调蓄容积不超过10 000 m3时，收集效率仍然较高。调蓄池的主要控制对象和目标值不同时，需要综合考虑后确定调蓄容积。
- Abstract:
- It is impossible to evaluate the sewage interception performance accurately after storage if the volume of the storage tank is calculated according to the existing design codes. The effect of rainfall intensity and storage tank volume on pollutant interception in a specific watershed was analyzed through numerical simulation of SWMM. Initial rainfall depth with different intensities was set, and the flow process and pollutant flush process of different initial rainfall runoff in a watershed of Longgang District, Shenzhen were simulated. In addition, the relationship between the accumulated collection amount of six pollutants (COD, SS, TN, TP, BOD5 and NH3-N) and the storage tank volume was calculated through numerical simulation. The difference of initial rainfall had no multiple relationships between the peak value and the total amount of pollutants. The flush effect of initial rainfall in descending order was TN, COD, BOD5, NH3-N and SS, and the initial rainfall had no obvious flush effect on TP. The storage capacity should not be less than the volume corresponding to the peak concentration, and it could be appropriately amplified after considering the control efficiency of multiple pollutants. In this case, the concentration of pollutants in the storage tank decreased rapidly at first and then slowed down after the peak value. When the storage capacity was less than 10 000 m3, relatively high collection efficiency was still obtained. When the main control object and target value of the storage tank are different, the storage volume should be determined after a comprehensive consideration.
相似文献/References:
[1]赵泽坤,车伍,赵杨,等.美国合流制溢流污染控制灰绿设施结合的经验[J].中国给水排水,2018,34(20):36.
ZHAO Ze kun,CHE Wu,ZHAO Yang,et al.Experiences of Combination of Gray-Green Infrastructure for Combined Sewer Overflow Control in the United States[J].China Water & Wastewater,2018,34(5):36.
[2]莫俊锋,王文亮,白献宇,等.基于设计暴雨法的CSO调蓄池池容计算方法探讨[J].中国给水排水,2020,36(8):77.
[3]韩靖博,杨默远,潘兴瑶,等.合流制排水分区海绵城市多层级调控效果定量评估[J].中国给水排水,2020,36(19):95.
HAN Jing-bo,YANG Mo-yuan,PAN Xing-yao,et al.Quantitative Evaluation of Multi-level Regulation Effect of Sponge City in Combined Drainage Zone[J].China Water & Wastewater,2020,36(5):95.
[4]史昊然.合流制溢流调蓄处理工艺效果评估及优化对策[J].中国给水排水,2021,37(5):106.
SHI Hao-ran.Performance Evaluation and Optimization Solutions of Combined Sewer Overflow Storage and Treatment Process[J].China Water & Wastewater,2021,37(5):106.
[5]常胜昆,周丹,马洪涛,等.厦门浯溪黑臭水体合流制溢流污染控制技术[J].中国给水排水,2021,37(6):1.
CHANG Sheng-kun,ZHOU Dan,MA Hong-tao,et al.Technical Research on CSO Pollution Control of Black and Odorous Water Body of Wuxi River in Xiamen[J].China Water & Wastewater,2021,37(5):1.
[6]张磊,杨卫国,王浩正,等.辅助设计CSO调蓄池的动态模拟工具[J].中国给水排水,2022,38(18):6.
ZHANGLei,YANGWei-guo,WANGHao-zheng,et al.A Dynamic Simulation Tool for Aided Design of CSO Storage Tanks[J].China Water & Wastewater,2022,38(5):6.
[7]尹华升,柳畅,谭觉,等.《湖南省排水系统溢流污染控制技术导则》解读[J].中国给水排水,2024,40(16):18.
YINHua-sheng,LIUChang,TANJue,et al.Explanation of Technical Guideline for Overflow Pollution Control of Sewer System in Hunan Province[J].China Water & Wastewater,2024,40(5):18.
[8]陈梅娟,李伟英,朱晓媛,等.北京市龙潭西湖流域合流制溢流污染调蓄系统设计[J].中国给水排水,2024,40(18):71.
CHENMei-juan,LIWei-ying,ZHUXiao-yuan,et al.Design of Regulation and Storage System for Combined Overflow Pollution Control in the Longtanxi Lake Area of Beijing[J].China Water & Wastewater,2024,40(5):71.