Anammox-mediated municipal solid waste leachate treatment: A critical review. (October 2022)

• Record Type: Journal Article
• Authors: Ren, Shang; Zhang, Liang; Zhang, Qiong; Zhang, Fangzhai; Jiang, Hao; Li, Xiyao; Wang, Shuying; Peng, Yongzhen
• Is Part Of: Bioresource technology. Volume 361(2022)
• Publication Date: 2022-10
• Subjects: Anammox -- Combined process -- Municipal solid waste (MSW) leachate -- Nitrogen removal -- Nitrous oxide (N2O); Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2022.127715
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The anammox technology could be flexibly combined with multiple processes. The effects of inhibiting substances in leachate on anammox bacteria were discussed. Control strategies of anammox-mediated leachate treatment systems were proposed. Anammox technology exhibits great potential for nitrous oxide emission reduction. Maintenance strategies of full-scale anammox-based leachate treatment are needed. Abstract: Municipal solid waste (MSW) leachate treatment through the anaerobic ammonium oxidation (anammox) process has received increasing attention due to less oxygen consumption, carbon source demand, and sludge production. The recent advances in anammox-mediated MSW leachate treatment are systematically reviewed. During MSW leachate treatment, the anammox technology could be flexibly combined with partial nitrification, partial denitrification, fermentation, and methane oxidation. Additionally, this review comprehensively discussed the specific effects on anammox bacteria (AnAOB) of key stressors in MSW leachate such as dissolved organic matters, salinity, and antibiotics, and introduced the corresponding pretreatment methods. The key control strategies focusing on achieving effective AnAOB retention, amelioration of microenvironments, and stable nitrite source were summarized. Moreover, the potential for nitrous oxide emission mitigation in anammox-based MSW leachate treatment systems was evaluated. Finally, this review highlighted the full-scale applications of anammox-mediated MSW leachate treatment and proposed the prospects as well as research gaps in this field.