反硝化细菌
厌氧氨氧化菌
甲烷
甲烷厌氧氧化
环境科学
反硝化
环境化学
废水
污水处理
氮气
铵
生物量(生态学)
化学
环境工程
生态学
有机化学
生物
作者
Yan Chen,Guangming Jiang,Muttucumaru Sivakumar,Jiangping Wu
标识
DOI:10.1080/10643389.2022.2056391
摘要
The integration of denitrifying anaerobic methane oxidation (DAMO) and anaerobic ammonium oxidation (Anammox) simultaneously converts ammonium, methane, and oxidized nitrogen species (nitrite and nitrate) to harmless N2 and CO2. This integrated and complementary process achieves the nitrogen and carbon cycles in wastewater with the potential to be applied widely at full scale to realize energy-positive wastewater treatment plants (WWTPs). In this review, we summarize the collaborative and competitive interactions of DAMO–Anammox microorganisms and systematically evaluate the challenges for the full-scale application of integrated DAMO–Anammox for wastewater treatment, including their extremely slow growth rate, low metabolic activity, and limited nitrogen and methene removal rate. We examine comprehensively the critical role of bioreactor design (attached, suspended, and granular sludge systems) for biomass retention and substrate transfer. The paper also discussed strategies involving trace elements (Cu(II) and Fe(II)), Zero Valent Iron (ZVI), and External Electrostatic Fields (EEFs) to enhance the DAMO–Anammox microbial activities. Further review is provided on the addition of Humics, quinone-compound anthraquinone-2,6-disulfonate (AQDs), Fe(III), Mn(IV) as electron acceptors through extracellular electron transfer (EET) and couple with autotrophic denitrification (AuDen) (H2S and Fe(II)) to accelerate nitrogen and methane removal. Finally, a conceptual design of innovative WWTPs based on the integrated DAMO–Anammox was proposed.
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