Coupling anammox with denitrification in a full-scale combined biological nitrogen removal process for swine wastewater treatment. (June 2021)

• Record Type: Journal Article
• Authors: Chen, Yanlin; Zheng, Rui; Sui, Qianwen; Ritigala, Tharindu; Wei, Yuansong; Cheng, Xiangqian; Ren, Jiehui; Yu, Dawei; Chen, Meixue; Wang, Tuo
• Is Part Of: Bioresource technology. Volume 329(2021)
• Publication Date: 2021-06
• Subjects: Anammox -- Denitrification -- Combined biological nitrogen removal -- COD/NO– 3-N ratio -- DO; 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.2021.124906
• Languages: English
• ISSNs: 0960-8524

Abstract

Abstract: In order to enhance nitrogen removal through anammox process in the full-scale swine wastewater treatment plant, an innovative regulation strategy of nitrate-based carbon dosage and intermittent aeration was developed to apply the combined biological nitrogen removal process in a full scale anaerobic-anoxic–oxic (A 2 /O) system. TN removal efficiency reached at 65.5 ± 6.0% in Phase 1 with decreasing external carbon dosage in influent due to the reduction of return nitrate concentration, and it increased to 83.5 ± 6.7% when intermittent aeration was adopted in oxic zone and external carbon source was stopped adding into influent in Phase 2. As a result, the energy consumption for the swine wastewater treatment decreased from 1.93 to 0.9 kW h/m 3 and 4.18 to 2.57 kW h/kg N, respectively. Microbial community analysis revealed that the average abundances of Candidatus Brocadia increased from 0.76% to 2.43% and removal of TN through anammox increased from 39% to 77%.