摘要：

采用A／OMBR与BAF组合工艺处理垃圾渗滤液，首先用含苯酚和氨氮模拟废水对种污泥进行预驯化处理，然后切换实际垃圾渗滤液进行通水实验，在不同的进水渗滤液稀释比条件下，系统考察A／OMBR和BAF对COD及氨氮的降解情况。研究结果表明，对于A／OMBR处理单元，当进水稀释比分别为9：1和5：1时，COD与氨氮的去除率可分别保持在90％和60％左右；而当稀释比减小到2：1时，COD与氨氮的去除率会分别减小到80％和35％左右。对BAF处理单元，A／OMBR出水中剩余的COD几乎不能被降解，而剩余的氨氮可被继续降解，其结果可使组合工艺的氨氮去除率提高到75％左右。

关键词: 垃圾渗滤液, 厌氧, 好氧, 膜生物反应器, 生物曝气滤池

Abstract:

The removal of COD and NH₄⁺-N characteristics in actuarial landfill leachate treatment have been investigated at various dilution ratios of leachate by a combination of A/O MBR and BAF processes. The incubated activated sludge from an industrial wastewater plant is acclimated initially by simulated water containing phenol and ammonium. The results show that in A/O MBR process, when the dilution ratio of leachate in influent are 9∶1 and 5∶1 respectively, the removal efficiencies of COD and NH₄⁺-N are maintained at about 90% and 60%. However, when this dilution ratio is decreased to 2∶1, their efficiencies drop to 80% and 35% respectively. In BAF process, it is found that the residual COD in A/O MBR of effluent almost cannot be degraded, only the residual NH₄⁺-N can be degraded continuously. Consequently, the removal efficiency of NH₄⁺-N in the whole system can be raised to 75%.

Key words: landfill leachate, anaerobic process, aerobic process, membrane bioreactor, biological aerated filter

中图分类号: 

• X703.1