Abstract:

The start-up and stable running status of the treatment of landfill leachate by anaerobic MBR degradation have been investigated. When the inflow COD_Cr is 6 000-8 000 mg/L，hydraulic retention time 2d，and mass concentration of sludge around 25 g/L，the average COD_Cr removing rate by the system is 65%-80%，in which the interception contribution rate of the membrane is about 5.6%. The average degradation rate of ammonia-nitrogen by the system is 28.6%，in which the interception rate of the membrane is about 4%. Ideal flux recovering rate can be obtained by hydraulic cleaning，acid-alkali cleaning and off-line cleaning.

Key words: landfill leachate, anaerobic membrane bio-reactor, start-up, membrane cleaning

摘要：

考察了厌氧MBR降解垃圾渗滤液的启动及稳定运行状况．当进水CODCr为6 000～8 000 mg/L，水力停留时间为2 d，污泥质量浓度在25 g/L左右时，系统对COD_Cr的平均去除率为65%～80%，其中膜的截留贡献率为5.6%左右;系统对氨氮的平均降解率为28.6%，其中膜的截留率为4%左右．膜组件经水力清洗、酸碱清洗和离线清洗后，能获得较为理想的通量恢复率．

关键词: 垃圾渗滤液, 厌氧膜生物反应器, 启动, 膜清洗

CLC Number: 

• X703