新型侧向流曝气生物滤池处理生活污水

Lateral flow biological aerated filter for domestic wastewater treatment

采用以沸石为填料的新型侧向流曝气生物滤池处理生活污水,考察了水力负荷和气水比的影响。结果表明,LBAF在最佳工况气水比10∶1,A、B段曝气量比1∶1,水力负荷0.43 m3/m2.h下,COD、SS、氨氮、总氮和总磷的去除率分别为88.01%、95.18%、78.97%、52.58%和21.02%;COD去除率随COD容积负荷的增加缓慢下降。氨氮、总氮去除率随COD容积负荷的增大明显下降,氨氮去除率随氨氮容积负荷的增大而明显降低。滤池纳污能力强,不易堵塞,可适当延长反冲周期。

A zeolite media lateral biological aerated is designed and used to treat domestic wastewater. The experimental results that under the optimal technological conditions which hydraulic is 0.43 m^3/m^2 · h and gas/ liquid is 10： 1, the removal rates of COD, SS, NH3-N,TN,TP are 88. 01% ,95. 18% ,78.97% ,52. 58% and 21.02% respectively. The research conclusions are that effluent COD capacity load increases with the COD removal reducing gradually and NH3-N, TN removal reducing obviously, effluent NH3-N capacity load increases with the NH3-N removal reducing obviously. LBAF has large pollution carrying capacity; and is uneasy to be blocked, in comparison with traditional BAF, the operation cycle of LBA is postponed.