生物法+膜法工艺处理垃圾焚烧电厂渗滤液

Treatment of Leachate from Waste Incineration Power Plant by Biological and Membrane Process

某城市生活垃圾焚烧电厂采用生物法+膜法工艺(预处理/UASB/MBR/NF/RO)处理垃圾渗滤液,处理规模为360 m^(3)/d。运行结果表明,该工艺处理效果稳定、耐冲击能力强。采用生物法(UASB/MBR)能有效去除渗滤液中的COD、BOD_(5)、NH_(3)-N、TN及SS,采用膜法(NF/RO)对水中的有机物及盐分进行深度处理,能保证出水达标回用。当进水COD、BOD_(5)、氨氮、TN、SS分别为63 700、29 300、1 930、2 450、9 000 mg/L时,出水指标分别为46.0、7.0、0.7、13、0 mg/L,完全满足《城市污水再生利用工业用水水质》(GB/T 19923—2005)中敞开式循环冷却水补充水的水质要求。该系统运行成本为34.41元/m^(3)。

The biological and membrane process (pretreatment/UASB/MBR/NF/RO) was used to treat landfill leachate of a waste incineration power plant,with design capacity of 360 m^(3)/d.The operation results showed that the process treatment effect was stable and had strong resistance to shock loading.The biological process(UASB/MBR) could effectively remove the COD,BOD_(5),NH_(3)-N,TN and SS,and the membrane process (NF/RO) can further treat organic and salt to ensure the effluent reach the recycle standard.When the influent concentration of COD,BOD_(5),ammonia nitrogen,TN,and SS were 63 700mg/L,29 300 mg/L,1 930 mg/L,2 450 mg/L and 9 000 mg/L respectively,the relevant effluent indexes were 46.0 mg/L,7.0 mg/L,0.7 mg/L,13 mg/L,0 mg/L,respectively,the effluent quality could meet the requirements of supplementary water for open recirculating cooling water in The Reuse of Urban Recycling Water—Water Quality Standard for Industrial Uses (GB/T 19923-2005).The operation cost of the system was 34.41 yuan/m^(3).