室温和高氮素负荷条件下电场强化微生物群落结构

张驰; 沙宏举; 王超; 律泽; 胡筱敏

doi:10.13205/j.hjgc.202305006

室温和高氮素负荷条件下电场强化微生物群落结构

doi: 10.13205/j.hjgc.202305006

张驰¹,
沙宏举¹,
王超¹,
律泽¹,
胡筱敏^2, ,

1. 沈阳建筑大学市政与环境工程学院, 沈阳 110168;
2. 东北大学资源与土木工程学院, 沈阳 110819

基金项目:

国家重大科技专项"辽河流域水污染物排放限值研究"(2012ZX07505002)

详细信息

作者简介:
张驰(1990-),男,讲师,主要研究方向为污水微生物治理。642831713zc@sina.com

通讯作者:
胡筱敏(1958-),男,教授,博士生导师,主要研究方向为微生物治理,污水处理。hxmin_jj@163.com

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出版历程
- 收稿日期: 2022-09-27

MICROBIAL COMMUNITY STRUCTURE ENHANCEMENT BY ELECTRIC FIELD AT ROOM TEMPERATURE AND HIGH NITROGEN LOAD

1. School Municipal & Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

摘要

摘要: 为探究室温和高氮素负荷条件下电场对厌氧氨氧化微生物群落结构和细胞结构的影响。采用连续搅拌式反应器(CSTR),控制进水ρ(NH₄⁺-N)/ρ(NO₂^--N)为1.2,考察了电场对厌氧氨氧化系统的影响。试验结果显示:室温条件下电场能够影响微生物群落结构和相对丰度。在电场作用下,微生物细胞结构存在凹陷和褶皱,有效增加了细胞表面积,提高传质效率,降低了高氮素负荷的抑制作用。厌氧氨氧化细菌和反硝化细菌等功能细菌通过协同作用强化脱氮效率,并维持系统稳定性,抵抗进水高氮素负荷的冲击作用。但进水TN容积负荷过高时易滋生其他杂菌,破坏微生物细胞结构。滋生的丝状菌与厌氧氨氧化等功能细菌竞争并成为优势菌种,降低功能菌群相对丰度,从而抑制功能微生物群落发展。
- 电场 /
- 厌氧氨氧化 /
- 反硝化 /
- 微生物群落 /
- 细胞结构
Abstract: In order to investigate the effect of electric field on microbial community structure and cell structure of anammox, at room temperature and high nitrogen loading, the effect of electric field on an anammox system was investigated in a continuously stirred reactor (CSTR), with an influent NH₄⁺-N/NO₂^--N value of 1.2. The results showed that the electric field could influence the structure and relative abundance of the microbial community, at room temperature. Under the electric field, there were depressions and folds in the microbial cell structure, which effectively increased the cell surface area, improved the mass transfer efficiency, and reduced the inhibition of high nitrogen load. The anammox bacteria and denitrifying bacteria could enhance nitrogen removal efficiency through a synergistic effect, maintain system stability, and resist the inhibition of high nitrogen loading. However, high nitrogen loading could easily breed other miscellaneous bacteria and destroy microbial cell structure. The breeding filamentous bacteria could compete with anammox and other functional bacteria, and become the dominant species, which reduces the relative abundance of functional flora and inhibited the development of the functional microbial community.
- electric field /
- anammox /
- denitrification /
- microbial community /
- cell structure

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