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| O_2、NO_3~-、NO_2~-为电子受体的生物除磷比较 | |
| 引用本文： | 蒋轶锋,郑建军,王宝贞,王琳,陈建孟.O_2、NO_3~-、NO_2~-为电子受体的生物除磷比较[J].环境科学,2009,30(2). |
| 作者姓名： | 蒋轶锋 郑建军 王宝贞 王琳 陈建孟 |
| 作者单位： | 1. 浙江工业大学生物与环境工程学院,杭州,310032 2. 浙江工商大学环保设计研究院,杭州,310005 3. 哈尔滨工业大学市政与环境工程学院,哈尔滨,150090 |
| 基金项目： | 国家自然科学基金，浙江省重大科技专项项目，杭州市重大科技攻关项目，浙江工业大学科研启动基金 |
| 摘 要： | 通过平行运行3个分别以O2、NO-3、NO-2为电子受体的SBR除磷系统,探讨了反硝化除磷区别于好氧除磷的工艺特征及其内在微生物竞争机制.NO-2不会对经驯化后反硝化聚磷菌(DPAO)的缺氧吸磷产生直接抑制作用,但其作为反硝化除磷电子受体的效能远低于NO-3;具备利用NO-3而缺乏NO-2反硝化酶系的DPAO(DPAO5)流失及聚糖菌(GAO)增殖是根本原因.而NO-3是一种高效电子受体,其反硝化除磷效能与以O2为受体的好氧除磷系统相当,两者在除磷计量学和功能菌群构成上十分接近.作为聚磷菌(PAO)的竞争者,GAO在3个研究系统中均大量存在.基于对不同电子受体的利用能力,PAO包含PO、PN、Pn、PNn、PON、PONn等6个种类.PON和PONn等兼性PAO是生物除磷的主体,其在污泥中比例越高,系统的除磷负荷也越大,即SBRo＞SBRn5＞SBRn3. |
| 关 键 词： | 生物除磷 电子受体 聚磷菌 聚糖菌 计量学 |
Comparison of Biological Phosphorus Removal Between Different Systems Using O_2,NO_3~- and NO_2~- as Electron Acceptors |
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| JIANG Yi-feng,ZHENG Jian-jun,WANG Bao-zhen,WANG Lin,CHEN Jian-meng.Comparison of Biological Phosphorus Removal Between Different Systems Using O_2,NO_3~- and NO_2~- as Electron Acceptors[J].Chinese Journal of Environmental Science,2009,30(2). | |
| Authors: | JIANG Yi-feng ZHENG Jian-jun WANG Bao-zhen WANG Lin CHEN Jian-meng |
| Affiliation: | 1.College of Biological and Environmental Engineering;Zhejiang University of Technology;Hangzhou 310032;China;2.Institute of Environment Design and Research;Zhejiang Gongshang University;Hangzhou 310005;3.College of Municipal and Environmental Engineering;Harbin Institute of Technology;Harbin 150090;China |
| Abstract: | By parallel operation of three phosphorus removal systems(SBR)using different electron acceptors of O_2,NO-_3 and NO-_2,process characteristics and inherent competition mechanism of microorganisms were discussed.Although NO-_2 had no direct inhibition on anoxic phosphorus uptake after the DPAO cultivation,system performance was still much lower than that with NO-_3 as electron acceptor.And it ultimately resulted from the washout of the group of DPAO(DPAO_5)that lacked the ability to denitrify NO-_2 and the ... |
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