Abstract: Taking the leachate treatment engineering of the middle-aged landfill leachate yard,having a treatment scale of 250 m³/d,in a city of Fujian Province,China,as an example,the application of the combined process,water quality equilibrium-MBR-nano-filtration-reverse osmosis,to the treatment of landfill leachate is introduced. It is known that the treated effluent COD≤30 mg/L,BOD₅≤10 mg/L,and NH₃-N≤20 mg/L,meeting the requirements for Discharge Limit Values specified in Table 2 of the Standard for Pollution Control on the Landfill Site of Municipal Solid Waste(GB 16889—2008). The chemical agent dosing costs are greatly reduced.

Key words: middle-aged landfill leachate, water quality equilibrium, MBR, nano-filtration, reverse osmosis

摘要： 以福建省某市处理规模为250 m³/d的中老龄垃圾填埋场渗滤液处理工程为例，介绍了水质均衡+两级A/O+超滤+纳滤+反渗透组合工艺在填埋场渗滤液处理中的应用情况。处理后出水COD≤30 mg/L、BOD₅≤10 mg/L、NH₃-N≤20 mg/L，满足《生活垃圾填埋场污染控制标准》（GB 16889—2008）中表2排放限值，且大大减少药剂投加成本。

关键词: 中老龄垃圾渗滤液, 水质均衡, MBR, 纳滤, 反渗透

CLC Number: 

• X703.1