LIShuang-ju,CHENGRui-feng,LIUJia-ran,et al.Upgrading Engineering Design of Post-denitrification Filter and Activated Carbon Contact Tank[J].China Water & Wastewater,2024,40(18):96-102.
后置反硝化滤池和活性炭接触池的提标工程设计
- Title:
- Upgrading Engineering Design of Post-denitrification Filter and Activated Carbon Contact Tank
- Keywords:
- wastewater treatment plant; upgrading and reconstruction; advanced treatment; denitrification filter; activated carbon contact tank; high-efficiency magnetic coagulation tank; combined process
- 摘要:
- 河南省某污水处理厂规模为13×104 m3/d，出水将由执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）的一级A标准提高至《地表水环境质量标准》（GB 3838—2002）的准Ⅳ类标准。在更换老旧设备基础上，充分挖掘现有构筑物潜能，新建磁混凝高效池替代二期深度处理设施强化除磷，并增设反硝化滤池和活性炭接触池强化对有机物及TN的去除。因用地限制，新建构筑物集约叠合布置，以改善施工空间。通过构筑物组合运行，可有效应对工业废水引起的进水水质波动，确保出水水质稳定优于地表水准Ⅳ类标准。该提标改造工程与传统深度处理工艺相比，节约了电耗和药耗成本，解决了厂区用地紧张和抗冲击负荷能力差的难题。
- Abstract:
- The effluent quality of a wastewater treatment plant with capacity of 13×104 m3/d in Henan Province, will be raised from the first level A criteria in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) to the quasi-Ⅳ criteria in the Environmental Quality Standards for Surface Water (GB 3838-2002). Based on replacing the dilapidated equipment and excavating the potential of the existing system, a high-efficiency magnetic coagulation tank was built to replace the treatment facility of phase Ⅱ, and a denitrification filter and an activated carbon contact tank were installed to enhance the removal of organic matter and TN. Because of land use restrictions, new buildings are arranged intensively to improve the construction space. The operation of combined process can effectively cope with the fluctuation of influent quality caused by industrial wastewater and ensure the effluent quality stably superior to level quasi?Ⅳ standard of surface water. Comparing with the traditional advanced treatment process, the upgrading project saves the electricity consumption and chemical consumption cost, and solves the problems of land shortage and poor anti?impact load capacity of the plant.
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