亚硝酸根作为电子受体的反硝化吸磷特性

亚硝酸根作为电子受体的反硝化吸磷特性

李相昆¹，周业剑²，高美玲²，王立军²，焦中志¹，黄荣新¹，刘冬峰³

1.哈尔滨工业大学市政环境工程学院，哈尔滨 150090;2.中国市政工程东北设计研究院，长春 130021;3.山东水利职业学院，山东日照 276826

收稿日期:2007-03-01 修回日期:1900-01-01 出版日期:2008-01-26 发布日期:2008-01-26
通讯作者: 李相昆

Nitrite Serving as Electronic Acceptor for Simultaneous Denitrification and Phosphorus Removal

LI Xiang-kun¹, ZHOU Ye-jian²，GAO Mei-ling²，WANG Li-jun², JIAO Zhong-zhi¹, HUANG Rong-xin¹, LIU Dong-feng³

1.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;2. Northeast Municipal Engineering Designing Academe of China, Changchun 130021, China;3. Shandong Water Polytechnic Institute, Rizhao, Shandong 276826, China

Received:2007-03-01 Revised:1900-01-01 Online:2008-01-26 Published:2008-01-26
Contact: LI Xiang-kun

摘要/Abstract

摘要： 为了考察聚磷污泥以NO^-₂为电子受体的反硝化吸磷特性，通过静态烧杯试验，研究了不同NO^-₂浓度聚磷污泥的反硝化同时吸磷能力及动力学。实验结果表明：NO^-₂质量浓度在3125 mg/L以下时，反硝化聚磷菌可以利用NO^-₂为电子受体完成反硝化吸磷；在高于3750 mg/L时，NO^-₂对缺氧吸磷有明显的抑制作用。但是反硝化聚磷菌经过驯化之后，即使NO^-₂质量浓度达到很高（7500 mg/L），仍然可以利用NO^-₂作为电子受体完成反硝化吸磷，而没有发现抑制吸磷的现象，而且NO^-₂的浓度对吸磷速率没有明显影响。以NO^-₂为电子受体平均吸磷速率为316 mg P/(gMLVSS·h)，平均反硝化速率为514 mg NO^-₂-N/(gMLVSS·h)，吸磷速率小于以氧和NO^-₃为电子受体时的速率。

关键词: 反硝化吸磷菌, 电子受体, 吸磷速率, 反硝化速率

Abstract: In order to inspect the phenomenon of anoxic phosphate uptake with simultaneous denitrification using NO^-₂ as electronic acceptor, a series of batch experiments under sequencing anaerobic/anoxic conditions were carried out. Wide variety concentrations of NO^-₂ were added during the anoxic condition. The results show that under anoxic condition, NO^-₂ had no inhibited behavior to phosphorus uptake bellow the concentration of 3125 mg/L, but at the concentration of 375 mg/L, phosphorus uptake inhibition happened. If the sludge of DPB was domesticated, NO^-₂ can serve as electron acceptor even at very high concentration (75 mg/L). Therefore under anoxic condition, phosphorus and nitrogen can be removed simultaneously via the process of denitrifying dephosphatation with nitrite as electron acceptors. Maximum specific rates of phosphorus uptake is 3.16 mg P/(gMLVSS·h) and denitrification rate is 514 mgNO^-₂-N/(gMLVSS·h).

Key words: denitrifying phosphorus removal bacteria, electron acceptor, ratio of P-uptake, ratio of denitrification

中图分类号:

X703

李相昆，周业剑，高美玲，王立军，焦中志，黄荣新，刘冬峰. 亚硝酸根作为电子受体的反硝化吸磷特性[J]. J4, 2008, 38(1): 117-0120.

LI Xiang-kun, ZHOU Ye-jian，GAO Mei-ling，WANG Li-jun, JIAO Zhong-zhi, HUANG Rong-xin, LIU Dong-feng. Nitrite Serving as Electronic Acceptor for Simultaneous Denitrification and Phosphorus Removal[J]. J4, 2008, 38(1): 117-0120.

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