Fast start-up of the cold-anammox process with different inoculums at low temperature (13 °C) in innovative reactor. (November 2018)

• Record Type: Journal Article
• Authors: Wu, Peng; Chen, Ya; Ji, Xiaoming; Liu, Wenru; Lv, Gang; Shen, Yaoliang; Zhou, Qi
• Is Part Of: Bioresource technology. Volume 267(2018)
• Page Start: 696
• Page End: 703
• Publication Date: 2018-11
• Subjects: Cold-Anammox -- Rapid start-up -- Innovative reactor -- Inoculum sludge -- Microbial community; 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.2018.07.026
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Fast start-up of anammox process treating domestic sewage at low temperature (13 °C) was achieved. The microbial communities of three enriched reactors are similar. The enriched anammox species were different in the three reactors. The Ca . Brocadia sinica confirmed the fast anammox start-up. The hydraulic flow of the CAMBR insures the accumulation of anammox bacteria. Abstract: Three innovative reactors (CAMBR) through optimally combining with the Anaerobic Baffled reactor and Membrane bioreactor were applied to start up the cold-anammox process at low temperature (13 °C) through inoculating flocculent nitrification sludge (R1), anaerobic granular sludge (R2) and flocculent denitrification sludge (R3), respectively. Results showed that anammox process was started successfully with over 90% total nitrogen removal rate in R1, R2 and R3 after 75d, 45d, and 90d, respectively. Microbial community revealed that Ca . Brocadia and Ca . Jettenia were the dominant anammox bacteria in R1, R2 and R3, accounting for an abundance of 0.08%, 12.18%; 3.17%, 0 and 0.08%, 0.38%, respectively. Three anammox species, Ca . Brocadia caroliniensis, Ca . Brocadia sinica and Ca . Jettenia asiatica were annotated based on the phylogenetic tree, suggesting the anammox species with larger maximum growth rate contributed to the rapid start-up of the cold-anammox process. This study reinforces the potential application of mainstream anammox.