新一代多单元MSBR在梅村污水厂四期扩建工程中的应用
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摘要
无锡梅村污水厂原设计规模为11×10~4 m~3/d,为适应周边地区污水量增长及满足进一步节能减排的需求,于2016年启动梅村污水厂四期扩建工程,处理规模为5.0×10~4 m~3/d,出水要求执行优于《城镇污水处理厂污染物排放标准》(GB 18918—2002)中一级A标准,主体工艺采用"新一代多单元改良式序批间歇反应器(MSBR)工艺+滤布滤池",回用水部分采用超滤工艺进行进一步深度处理。通过对四期项目近一年多运行数据的分析,在进水水量水质不超过设计条件的工况下,可确保出水稳定达到《地表水环境质量标准》(GB 3838—2002)地表水IV类标准(TN指标除外)。与原MBR工艺比较,运行能耗可降低约0.15 kW·h/m~3,有效降低了运行成本。
The original treatment capacity of Meicun WWTP is 11×10~4m~3/d. In order to adapt to the increase of sewage volume in the surrounding areas and meet the need for further energy conservation and emission reduction, Wuxi Meicun WWTP phase IV expansion project is initiated in 2016, with treatment capacity of 5.0×10~4 m~3/d and stricter effluent standard than Class I—A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918—2002). The main process of this expansion project is "MSBR process + Disk filter", some part of treated effluent is reclaimed after further treatment with UF process. From the analysis of operation data, almost all the effluents(TN excepted) from Meicun WWTP phase IV expansion project achieve Class IV criteria specified in Environmental Quality Standards for Surface Water(GB 3838—2002) under the design condition. Energy consumption of "MSBR process+ Disk filter" in phase IV expansion project is 0.15 kW· h/m~3 lower than the original MBR processes, which decreases the operation cost efficiently.
The original treatment capacity of Meicun WWTP is 11×10~4m~3/d. In order to adapt to the increase of sewage volume in the surrounding areas and meet the need for further energy conservation and emission reduction, Wuxi Meicun WWTP phase IV expansion project is initiated in 2016, with treatment capacity of 5.0×10~4 m~3/d and stricter effluent standard than Class I—A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918—2002). The main process of this expansion project is "MSBR process + Disk filter", some part of treated effluent is reclaimed after further treatment with UF process. From the analysis of operation data, almost all the effluents(TN excepted) from Meicun WWTP phase IV expansion project achieve Class IV criteria specified in Environmental Quality Standards for Surface Water(GB 3838—2002) under the design condition. Energy consumption of "MSBR process+ Disk filter" in phase IV expansion project is 0.15 kW· h/m~3 lower than the original MBR processes, which decreases the operation cost efficiently.
引文
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