C/N对好氧反硝化菌强化的SBR脱氮效率的影响

doi:10.12068/j.issn.1005-3026.2018.08.028

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (8): 1205-1210.DOI: 10.12068/j.issn.1005-3026.2018.08.028

C/N对好氧反硝化菌强化的SBR脱氮效率的影响

赵鑫，刘芳，赵研，胡筱敏

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2017-04-05 修回日期:2017-04-05 出版日期:2018-08-15 发布日期:2018-09-12
通讯作者: 赵鑫
作者简介:赵鑫(1982-)，男，辽宁沈阳人，东北大学副教授，博士；胡筱敏(1958-)，男，江西婺源人，东北大学教授，博士生导师.冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家科技重大专项(2013ZX07202-010).国家自然科学基金资助项目(51171041).

Effects of C/N on the Denitrification Efficiency of SBR Enhanced by Aerobic Denitrifying Bacteria

ZHAO Xin， LIU Fang， ZHAO Yan， HU Xiao-min

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-04-05 Revised:2017-04-05 Online:2018-08-15 Published:2018-09-12
Contact: ZHAO Xin
About author:-
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摘要/Abstract

摘要： 使用2株具有良好的好氧反硝化能力的假单胞菌对序批式反应器(SBR)进行生物强化，连续运行61 d，探讨进水C/N变化对微生物强化SBR内微生物菌群和其脱氮效率的影响.随着C/N降低，反硝化效率明显降低，但是经强化的SBR的反硝化效率始终优于对照组，向活性污泥中接种好氧反硝化细菌后，NO^-₃-N 去除率最高提升14.1%，使用纯菌构建人工菌群可将NO^-₃-N去除率提高22.6%.使用好氧反硝化菌进行强化可以提升反硝化细菌所占比例，促使其迅速成为优势功能菌群，缩短系统的启动周期，大幅提高系统的反硝化效率，并且提高菌群结构和系统运行的稳定性.该技术在处理C/N>10∶1的含硝酸盐的污水时更具优势.

关键词: 生物强化, 好氧反硝化, 序批式反应器, 脱氮效率, 菌群结构分析

Abstract: Two strains of Pseudomonas with efficient aerobic denitrification ability were used in the bio-augmentation process of sequencing batch reactor. In the 61 days’ operating process， the effects of C/N on the microbial community structures and denitrification efficiency were investigated. Although the denitrification efficiencies obviously decreased with the C/N decreasing， the performances of bio-augmentation groups were better than those of the negative control. Adding efficient aerobic denitrifiers into activated sludge enhanced the NO^-₃-N removal rate by about 14.1%， whereas the pure-cultured group was enhanced by 22.6%. Bio-augmentation with aerobic denitrifiers enhanced the proportion of denitrifiers， promoted them to be the dominant functional population， shortened the system’s start-up period， greatly enhanced the denitrification efficiency， and improved the stability of the microbial community structure and the system’s operation. This technique is more advantageous in the treatment of C/N>10∶1 wastewater containing nitrate.

Key words: bio-augmentation, aerobic denitrification, SBR, denitrification efficiency, microbial community structure analysis

中图分类号:

X522

赵鑫，刘芳，赵研，胡筱敏. C/N对好氧反硝化菌强化的SBR脱氮效率的影响[J]. 东北大学学报:自然科学版, 2018, 39(8): 1205-1210.

ZHAO Xin， LIU Fang， ZHAO Yan， HU Xiao-min. Effects of C/N on the Denitrification Efficiency of SBR Enhanced by Aerobic Denitrifying Bacteria[J]. Journal of Northeastern University Natural Science, 2018, 39(8): 1205-1210.

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C/N对好氧反硝化菌强化的SBR脱氮效率的影响

Effects of C/N on the Denitrification Efficiency of SBR Enhanced by Aerobic Denitrifying Bacteria

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