Investigation of Nitrite Production Pathway in Integrated Partial Denitrification/Anammox Process via Isotope Labelling Technique and the Relevant Microbial Communities

• 作者: Li Yanzhe Gai Jianing Zhang Xiaofei Zhao dongfeng Guo Yadong Yu Gengxing Zhao Chaocheng Liu Fang Zhao Ruiyu Liu Chunshuang
• 来源期刊: 中国炼油与石油化工（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Environmental Protection
• 页码范围: 129-134
• 页数: 6页
• 语种: 英文

摘要

In this study,the nitrogen removal performance of partial denitrificaiton/anammox(PDA)process was investigated by using an UASB reactor.High total nitrogen(TN)removal efficiency(91.97％)was achieved at an influent nitrogen loading rate of 0.64 kg/(m3·d).Anammox bacteria did execute the function of converting nitrate to nitrite in PDA system according to 15N isotope labeling experiments and the contribution was approximately 36.3％.Candidatus Brocadia,Candidatus Kuenenia and Thauera were functional strains for anammox and denitrification process,respectively.Thauera and Candidatus_Brocadia were more important for TN removal at high loading rates(0.64 kg/(m3·d)).This result can provide a theoretical and technical foundation for the application of the PDA process.