TY - JOUR
T1 - Application of the anammox-based process for nitrogen removal from anaerobic digestion effluent
T2 - A review of treatment performance, biochemical reactions, and impact factors
AU - Sheng, Li
AU - Lei, Zhen
AU - Dzakpasu, Mawuli
AU - Li, Yu You
AU - Li, Qian
AU - Chen, Rong
N1 - Funding Information:
This work was supported by the National Key Research and Development Program of China (No. 2017YFE0127300 ), the Shaanxi Provincial Key Program for Science and Technology Development (No. 2018KWZ-06 ), the Shaanxi Program for Overseas Returnees (No. 2018012 ), and the Shaanxi Provincial Program for Innovative Research Team (No. 2019TD-025 ).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12
Y1 - 2020/12
N2 - Anaerobic digestion (AD) combined with an anammox-based process is an efficient and energy-saving technology. The key to realizing the wide application of this technology is to deeply understand the anammox-based process, which is the limiting phase of this technology. This study provides an overview of more than 30 reactors from published studies on AD effluent treatment via anammox-based processes. The objective of this review is to evaluate how to achieve stability and high efficiency in the anammox-based process. Therefore, the AD effluent components are critically reviewed, and the appropriate pretreatment procedures for the AD effluent before it is fed into an anammox-based process reactor are summarized. Single-stage and two-stage partial nitration–anammox (PN/A) are two common anammox-based processes for removing autotrophic nitrogen from AD effluent. To reduce the nitrate produced by anammox, a combination of partial denitrification with PN/A is recommended. Nitrogen and carbon removal efficiencies are the basic criteria that are used to assess the performance of existing anammox-based processes for AD effluent treatment. Thus, the strategies for efficiently removing nitrogen and carbon in anammox-based processes are documented in this review. Moreover, the relationships between anammox, ammonium-oxidizing bacteria, nitrite-oxidizing bacteria, and denitrifiers are explored by clarifying the potential biochemical reactions in anammox-based processes for AD effluent treatment. Furthermore, the three primary influencing factors—ammonia and nitrite concentrations, organic concentration, and the operation parameters—are summarized.
AB - Anaerobic digestion (AD) combined with an anammox-based process is an efficient and energy-saving technology. The key to realizing the wide application of this technology is to deeply understand the anammox-based process, which is the limiting phase of this technology. This study provides an overview of more than 30 reactors from published studies on AD effluent treatment via anammox-based processes. The objective of this review is to evaluate how to achieve stability and high efficiency in the anammox-based process. Therefore, the AD effluent components are critically reviewed, and the appropriate pretreatment procedures for the AD effluent before it is fed into an anammox-based process reactor are summarized. Single-stage and two-stage partial nitration–anammox (PN/A) are two common anammox-based processes for removing autotrophic nitrogen from AD effluent. To reduce the nitrate produced by anammox, a combination of partial denitrification with PN/A is recommended. Nitrogen and carbon removal efficiencies are the basic criteria that are used to assess the performance of existing anammox-based processes for AD effluent treatment. Thus, the strategies for efficiently removing nitrogen and carbon in anammox-based processes are documented in this review. Moreover, the relationships between anammox, ammonium-oxidizing bacteria, nitrite-oxidizing bacteria, and denitrifiers are explored by clarifying the potential biochemical reactions in anammox-based processes for AD effluent treatment. Furthermore, the three primary influencing factors—ammonia and nitrite concentrations, organic concentration, and the operation parameters—are summarized.
KW - Anaerobic digestion
KW - Anammox
KW - Nitrogen removal
KW - Wastewater treatment
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U2 - 10.1016/j.jwpe.2020.101595
DO - 10.1016/j.jwpe.2020.101595
M3 - Review article
AN - SCOPUS:85089795837
VL - 38
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
SN - 2214-7144
M1 - 101595
ER -