Nitrogen removal performance of coculture granular sludge based on nitrate/nitrite-dependent anaerobic methane oxidation and anaerobic ammonium oxidation

被引：0

作者：

Liu C. ^{[1
]}

Li W. ^{[1
]}

Yu H. ^{[1
]}

Zhang H. ^{[1
]}

Zhang L. ^{[1
]}

Zhao D. ^{[1
]}

Liu F. ^{[1
]}

Zhao C. ^{[1
]}

机构：

[1] College of Chemical Engineering in China University of Petroleum(East China), Qingdao

来源：

Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2022年 / 46卷 / 01期

关键词：

Anaerobic ammonium oxidation; Co-culure granular sludge; Nitrate/nitrite-dependent anaerobic methane oxidation (DAMO); Nitrogen removal;

D O I：

10.3969/j.issn.1673-5005.2022.01.021

中图分类号：

学科分类号：

摘要：

The co-culture granular sludge of nitrate/nitrite-dependent anaerobic methane oxidation (DAMO) and anaerobic ammonium oxidation was successfully developed in modified UASB reactor by shortening HRT from 9.6 d to 0.9 d at 30 ℃ after 160 days cultivation. The characteristics of particle structure and microbial composition were studied by FISH and 16S rRNA gene sequencing. The results indicate that the ammonium and nitrite removal rate by co-culture granular sludge is 588.9 and 523 mg•L-1•d-1, respectively. The activity of DAMO reaches 95.2 mg•L-1•d-1, and the effluent nitrate concentration is lower than 40 mg L-1. The total nitrogen removal efficiency is up to 92.5%. The average co-culture granular sludge diameter is 0.76 mm, which is 1.46 times larger than the inoculated anammox granular sludge. DAMO microorganisms mainly locate in the outer layer, and anammox bacteria primarily present in the inner part of the co-culture granular sludge. The dominate anammox bacteria is Candidatus Brocadia and the dominate DAMO archaea is Candidatus Methanoperedens. The main bacteria is Candidatus Methylomirabilis. © 2022, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.

引用

页码：177 / 182

页数：5

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