SHI Hao-ran.Performance Evaluation and Optimization Solutions of Combined Sewer Overflow Storage and Treatment Process[J].China Water & Wastewater,2021,37(5):106-110.
合流制溢流调蓄处理工艺效果评估及优化对策
- Title:
- Performance Evaluation and Optimization Solutions of Combined Sewer Overflow Storage and Treatment Process
- Keywords:
- combined sewer overflow; storage and treatment process; initial rainwater; ammonia nitrogen
- 摘要:
- 针对初期雨水及合流制溢流水质和水量波动大而引起的调蓄工程处理能力不足、运行能耗高及难以有效收集高负荷合流制溢流污水等问题，通过对不同时期进入调蓄工程的合流制溢流水质和水量特征的分析，结合调蓄工程处理工艺的沿程水质分析，考察了“微砂高效沉淀池+接触氧化池+D型滤池”工艺对合流制溢流的实际处理效果。结果表明，初期雨水及合流制溢流均呈水质和水量波动大、高氨氮、低COD的特征，氨氮是调蓄处理工艺出水水质达标的关键指标；同时,生化处理单元进水COD浓度低的特征不利于接触氧化池的生物挂膜，降低了工艺的实际处理能力。因此建议：①在接触氧化池后设置混凝加药装置，以保证出水SS和TP达标排放；②接触氧化池采用多点进水方式，并预留碳源投加装置；③增加精确曝气控制系统，实现节能降耗。
- Abstract:
- In view of the problems caused by the fluctuation of initial rainwater and combined sewer overflow wastewater quality and quantity, such as insufficient treatment capacity of regulation and storage project, high operation energy consumption, difficulty in effectively collecting combined sewer overflow wastewater with high load, etc, the quality and quantity characteristics of combined sewer overflow wastewater entering into regulation and storage project in different periods was analyzed, and the treatment effect of combined sewer overflow by the combined process of high efficiency fine sand sedimentation tank, contact oxidation tank and D-type filter was investigated through the water quality analysis along the process. The initial rainwater and combined sewer overflow were characterized by large fluctuation of water quality and quantity, high ammonia nitrogen and low COD. Therefore, ammonia nitrogen was the key index for the effluent of storage and treatment process to meet the discharge standard. At the same time, the low COD concentration in the influent of the biochemical treatment unit was not conducive to the growth of biofilm in the contact oxidation tank, which reduced the actual treatment capacity of the process. Suggestions were as follows: a precipitation unit should be set after the contact oxidation tank to ensure effluent SS and TP meeting the discharge standard; multi-point feeding mode should be adopted in contact oxidation tank, and carbon source adding devices should be reserved; a precise aeration control system should be installed to achieve energy saving and consumption reduction.
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]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.
[5]邹安平.合流制溢流污染调蓄池设计容积数值模拟[J].中国给水排水,2022,38(5):116.
ZOUAn-ping.Numerical Simulation of Design Volume of Combined Sewer Overflow Storage Tank[J].China Water & Wastewater,2022,38(5):116.
[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.