NO_3^-、NO_2^-作为生物除磷最终电子受体的研究初探  

Preliminary study of nitrate and nitrite as final electron acceptor of biological phosphorous removal

作　　者：杨聪和[1] 孙力平[1] 李秀敏[1] 李亮[2] 

机构地区：[1]天津城市建设学院市政与环境工程系,天津300384 [2]新疆农业大学资源与环境工程学院,新疆乌鲁木齐830052

出　　处：《天津城市建设学院学报》2005年第2期102-106,共5页Journal of Tianjin Institute of Urban Construction

基　　金：天津市重大科技攻关项目(043112011);建设部重点科技项目(04227)

摘　　要：论述了生物除磷过程中以NO3-、NO2-作为最终电子受体时,厌氧条件下释磷规律,缺氧条件下PO43-P的去除效果以及缺氧段NO2-N的变化情况.得出结论:亚硝酸盐在一定程度上可以充当生物除磷的最终电子受体;以亚硝酸盐为电子受体,缺氧段的反硝化率要大于以硝酸盐为电子受体的情况;高浓度亚硝酸盐会抑制反硝化聚磷菌的厌氧释磷,而且这种抑制作用不是瞬间的,至少会持续一段时间.The rule of phosphorous releasing under anaerobic condition,the removal effects of NO_X^--N and PO_4^(3-)-P under anoxic conditions,and the variation of NO_2^--N are discussed when nitrate and nitrite are used to be the final electron acceptor during biological removal process.It is concluded that in some extend,nitrite can be used as the final electron acceptor of biological phosphorous removal.By using nitrite as electron acceptor, the denitrifying rate is higher than the condition of using nitrate.High concentrated nitrite will inhibit anaerobic phosphorous release of denitrifying dephosphatation removal bacteria,while the inhibition is not instant, but will last for some time.

关 键 词：电子受体 生物除磷 硝酸盐 亚硝酸盐 反硝化除磷 

分 类 号：X172[环境科学与工程—环境科学]