Advanced nitrogen and phosphorus removal from municipal wastewater via simultaneous enhanced biological phosphorus removal and semi-nitritation (EBPR-SN) combined with anammox.,Bioprocess and Biosystems Engineering

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Advanced nitrogen and phosphorus removal from municipal wastewater via simultaneous enhanced biological phosphorus removal and semi-nitritation (EBPR-SN) combined with anammox.
Bioprocess and Biosystems Engineering ( IF 3.5 ) Pub Date : 2020-06-27 , DOI: 10.1007/s00449-020-02392-8
Chuansheng Yuan ₁ , Yongzhen Peng ₁ , Jiantao Ji ₁ , Bo Wang ₁ , Xiyao Li ₁ , Qiong Zhang ₁

Affiliation

Abstract

In this study, a novel laboratory-scale synchronous enhanced biological phosphorus removal and semi-nitritation (termed as EBPR-SN) combined with anammox process was put forward for achieving nutrient elimination from municipal wastewater at 27 ℃. This process consisted of two 10 L sequencing batch reactors (SBRs), i.e. EBPR-SN SBR followed by Anammox SBR. The EBPR-SN SBR was operated for 400 days with five periods and the Anammox SBR was operated starting on period IV. Eventually, for treating municipal wastewater containing low chemical oxygen demand/nitrogen (COD/N) of 3.2 (mg/mg), the EBPR-SN plus Anammox system performed advanced total inorganic nitrogen (TIN) and P removal, with TIN and P removal efficiencies of 81.4% and 94.3%, respectively. Further analysis suggested that the contributions of simultaneous partial nitrification denitrification, denitrification, and anammox to TIN removal were 15.0%, 45.0%, and 40.0%, respectively. The enriched phosphorus-accumulating organisms (PAOs) in the EBPR-SN SBR facilitated P removal. Besides, the EBPR-SN SBR achieved P removal and provided stable anammox substrates, suggesting a short sludge retention time (SRT 12 d) could achieve synergy between ammonia-oxidizing bacteria and PAOs. These results provided an alternative process for treating municipal wastewater with limited organics.

Graphic abstract

中文翻译：

通过同时增强生物除磷和半亚硝化 (EBPR-SN) 结合厌氧氨氧化对城市污水进行高级脱氮除磷。

摘要

本研究提出了一种新型的实验室规模同步强化生物除磷和半亚硝化（简称EBPR-SN）结合厌氧氨氧化工艺，以在27 ℃下实现城市污水中的养分去除。该工艺包括两个 10 L 序批式反应器 (SBR)，即 EBPR-SN SBR，然后是 Anammox SBR。EBPR-SN SBR 在五个周期内运行了 400 天，Anammox SBR 从周期 IV 开始运行。最终，为了处理化学需氧量/氮 (COD/N) 为 3.2 (mg/mg) 的城市废水，EBPR-SN 加 Anammox 系统进行了高级总无机氮 (TIN) 和 P 去除，同时去除了 TIN 和 P效率分别为 81.4% 和 94.3%。进一步分析表明，同步部分硝化反硝化、反硝化和厌氧氨氧化对 TIN 去除的贡献分别为 15.0%、45.0% 和 40.0%。EBPR-SN SBR 中富集的聚磷生物 (PAO) 促进了除磷。此外，EBPR-SN SBR 实现了除磷并提供了稳定的厌氧氨氧化底物，表明较短的污泥停留时间（SRT 12 d）可以实现氨氧化细菌和 PAO 之间的协同作用。这些结果提供了一种用有限有机物处理城市废水的替代方法。EBPR-SN SBR 实现了除磷并提供了稳定的厌氧氨氧化底物，表明较短的污泥停留时间（SRT 12 d）可以实现氨氧化细菌和 PAO 之间的协同作用。这些结果提供了一种用有限有机物处理城市废水的替代方法。EBPR-SN SBR 实现了除磷并提供了稳定的厌氧氨氧化底物，表明较短的污泥停留时间（SRT 12 d）可以实现氨氧化细菌和 PAO 之间的协同作用。这些结果提供了一种用有限有机物处理城市废水的替代方法。

图形摘要

更新日期：2020-06-27

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