摘要：

福州某垃圾焚烧发电厂采用预处理/厌氧/外置式MBR/RO工艺处理渗滤液，设计规模为250 m³/d。运行结果表明，系统出水COD、BOD₅与NH₃-N分别为(47.7±18.5)、(14.6±6.1)、(0.70±0.22) mg/L，满足出水排放限值。分析污染物降解过程发现，COD与BOD₅在生物处理系统(厌氧+MBR)中的去除率分别为98.7%与98.6%，MBR中的TN去除率为81.5%。这表明COD与BOD₅主要在厌氧池与MBR中去除，大部分TN在MBR系统中脱除。

关键词: 垃圾焚烧, 渗滤液, 厌氧, 外置式MBR, 总氮

Abstract:

The combined process of "pretreatment/anaerobic/external MBR/RO" was used to treat the leachate in a municipal solid waste(MSW) incineration power plant in Fuzhou. The design treatment scale was 250 m³/d. The operation results showed that, the effluent concentrations of COD, BOD₅ and NH₃-N were (47.7±18.5) mg/L, (14.6±6.1) mg/L and (0.70±0.22) mg/L, respectively, which met the effluent water quality. The results of pollutants removal process showed, the removal efficiency of COD and BOD₅ in biological treatment process(both anaerobic and MBR) were respectively 98.7% and 98.6%, and the removal efficiency of TN achieved 81.5% in MBR. Therefore, COD and BOD₅ were mainly removed in anaerobic tank and MBR, while TN was primarily removed in MBR.

Key words: MSW incineration, leachate, anaerobic, external MBR, total nitrogen

中图分类号: 

• X703