GONG Xuan-yi,WANG Zhe-xiao,WANG Shun,et al.Application of Super Magnetic Separation and BAF Combined Process in Source Sewage Emergency Control Project[J].China Water & Wastewater,2021,37(14):132-136.
超磁分离与BAF组合工艺用于应急控源截污工程
- Title:
- Application of Super Magnetic Separation and BAF Combined Process in Source Sewage Emergency Control Project
- Keywords:
- source sewage emergency control; biological aeration filter; nitrogen and phosphorus removal; super magnetic separation; suspended solids
- 摘要:
- 某污水处理厂因超负荷运行导致污水溢流，且受到占地、建设周期等因素制约，经过比选最终选择了超磁分离与无堵塞曝气生物滤池（BAF）组合工艺用于应急处置。介绍了该组合工艺的技术特点、技术参数、工艺流程、调试运行要点。该系统自2018年通水后，出水水质稳定达到《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准，累计削减COD约224.2 t、SS约29.2 t、总磷约5 t、氨氮约41.8 t。该工艺投资成本约2 645万元，运行费用约1.08元/m3（不含投建费用），节省环保税约88.06万元。实践证明，该工艺在受到占地面积、施工周期等因素制约时仍能较好地发挥高品质应急控源截污作用，具有较强的技术可行性和一定的经济性。
- Abstract:
- Due to the overload operation of a sewage plant, and restricted by factors such as land occupation and construction period, the combined process of super magnetic separation and non-clogging biological aeration filter(BAF) was finally selected for emergency treatment after comparison. The technical features, parameters, process flow, conditioning, operation key points are elaborated. The effluent quality has stably reached the first level A criteria in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) since operation in 2018. The total reductions of COD, suspended solids, total phosphorus and ammonia nitrogen are 224.2 t, 29.2 t, 5 t, and 41.8 t, respectively. The investment cost is about 26.45 million yuan, the operating cost is about 1.08 yuan/m3 (excluding building costs), and about 880 600 yuan green taxes are saved. The practice shows that it can still play the role of high-quality emergency source control and pollution interception well under the constraints of occupation area and construction period, and has strong technical feasibility and certain economic benefits.
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