曝气生物滤池去除SS以及水头损失增长的特性研究  

SS Removal and Head Loss Increase in Biological Aerated Filter

作　　者：李婷[1] 董文艺[1] 王宏杰[2] 林进南[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2013年第15期81-84,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07206-002-02);住房和城乡建设部研究开发项目(2012-k7-18)

摘　　要：通过中试考察了不同气水比下，上流式曝气生物滤池（BAF）去除悬浮物以及水头损失增长的特性。结果表明：随着气水比的增大，BAF对ss的去除效率降低，对SS的主要去除区域逐步向滤层上部推移，且反冲洗后滤层对SS去除能力的恢复减慢；BAF滤柱内的生物量随着气水比的增大而增加，随着滤层高度的增加而逐步减少，滤层高度为50cm处的生物量高达12．50～21．52mgVAS／g陶粒；BAF内水头损失的增加速率随着气水比的增大而减小，当气水比由2：1增大为10：1时．反冲洗周期内的终点水共桶央由30．A pilot-scale experiment was carried out to investigate SS removal and head loss in- crease in up-flow biological aerated filter （BAF） with various air/liquid ratios. The results showed that as the air/liquid ratio increased, the SS removal rate decreased, the major removal region moved upward. After backwashing, there was a slowdown in the recovery of BAF＇ s SS removal ability. The biomass in- creased with increasing the air/liquid ratio, but decreased with increasing the BAF layer height. At the BAF layer of 50 cm, the biomass reached 12.50 to 21.52 mgVAS/g ceramsite. The rise rate of the BAF head loss decreased with increasing the air/liquid ratio. When the air/liquid ratio increased from 2 ： 1 to 10 ： 1, the terminal head loss of a backwashing cycle reduced from 30.1 kPa to 10.5 kPa.

关 键 词：曝气生物滤池 悬浮物 水头损失 生物膜 气水比 

分 类 号：X703[环境科学与工程—环境工程]