【摘要】 北方某设计规模为6万m³/d的地下式污水处理厂，采用多模式AO-MBR工艺，出水水质满足《城镇污水处理厂水污染物排放标准》（DB11/890-2012）中B标准要求。项目建设总投资为46 276万元。单位水量处理总成本为3.26元/m³,其中可变成本为0.918元/m³,固定成本为2.342元/m³。自投入运营以来，设计工艺处理高效且稳定，出水COD、TN、NH₃-N、TP平均排放浓度为13 mg/L、10.6 mg/L、0.24 mg/L、0.2 mg/L,平均去除率分别为93%、78.6%、99.5%和96%。水厂高质量保证所在规划服务区域的再生水供应，有效保障该地区再生水资源可持续利用。更多还原

【Abstract】 A underground WWTP with a design scale of 60 000 m³/d in northern China adopted the multi-stage A/O process and MBR process for inlet water, and the effluent quality met the requirements of standard B in the Discharge Standard of Water Pollutants for Urban Sewage Treatment Plants（DB 11/890-2012）. The total investment of the project is 462.76 million yuan. The total cost of water treatment is 3.26 yuan/m³, of which the variable cost is 0.918 yuan/m³, and the fixed cost is 2.342 yuan/m³. Since commercial transport, the design process has been efficient and stable. The average discharge concentrations of COD, TN, NH₄-N and TP in effluent are 13 mg/L, 10.6 mg/L, 0.24 mg/L and 0.2 mg/L, and the average removal rates are 93%, 78.6%, 99.5% and 96%, respectively. The high quality of the water plant ensures the supply of recycled water in the planned service area, effectively ensuring the sustainable use of recycled water resources in the area.更多还原