脱氮除磷膜-生物反应器的除磷效果及特性  

Enhanced phosphorus removal in biological nitrogen and phosphorus removal process using membrane bioreactor

作　　者：张志超[1] 黄霞[1] 肖康[1] 李海滔[1] 赵晓靓[1] 沙恒[1] 张宇宁[1] 

机构地区：[1]清华大学环境科学与工程系,环境模拟与污染控制国家重点联合实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2008年第9期1472-1474,1478,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家“八六三”高技术项目(2005AA601030)

摘　　要：为了研究在脱氮除磷膜-生物反应器中的除磷效果及特性，主要考察了反应器处理生活污水过程对总磷的稳定去除效果，以及生物生长除磷、反硝化聚磷、好氧聚磷、膜截留除磷等不同除磷途径对除磷的贡献。试验结果表明，该工艺取得了较好且稳定的除磷效果，总磷的平均去除率为92．0％。在脱氮除磷膜-生物反应器中，缺氧区发生的反硝化聚磷占到了生物聚磷总量的34．O％～38．6％，反硝化聚磷得到了强化。此外，膜本身对胶体形态磷有一定的截留作用，对进一步降低出水磷浓度起到了一定作用。In order to study the effect and characteristics of phosphorus removal in biological nitrogen and phosphorus removal process using membrane bioreactor, this paper investigates the removal efficiency of total phosphorus （TP）, and discusses the contributions of biological growth phosphorus removal,denitrifying phosphorus removal, aerobic phosphorus removal, and membrane filtration phosphorus removal. The results show that the average removal effieiency of TP is 92.0%. The phosphorus removal mechanism in this process is different from that in the conventional biological phosphorus removal process in which aerobic phosphorus uptake plays the most important role. In the process, denitrifying phosphorus removal is enhanced and contributed by 34.00% -38.6% in the total phosphorus removal. In addition, membrane can reject a portion of colloidal phosphorus, leading to a further decrease of total phosphorus concentration in membrane bioreactor permeate.

关 键 词：生物脱氮除磷 膜-生物反应器 反硝化除磷 

分 类 号：X703.1[环境科学与工程—环境工程]