Enrichment and biofilm formation of Anammox bacteria in a non-woven membrane reactor

Bioresource Technology
Shou-Qing NiShihwu Sung

Abstract

An innovative reactor configuration for Anammox enrichment by connecting a non-woven membrane module with an anaerobic reactor was developed in this study. The Anammox non-woven membrane reactor (ANMR) exhibited high biomass retention ability through the formation of aggregates in the reactor and biofilm on the interior surface of the non-woven membrane. No fouling problems occurred on the membrane after the development of mature biofilms. After 8 months of operation, the nitrogen loading rate (NLR) and nitrogen removal rate (NRR) reached 1263 mg N/l/d and 1047.5 mg N/l/d, respectively, with a maximum specific ammonium consumption (SAC) of 51 nmol/mg protein/min. At steady state, the average ammonium and nitrite removal efficiencies were 90.9% and 95.0%, respectively. Morphological observation of Anammox aggregates and biofilm showed a high degree of compactness. Also, enrichment of Anammox bacteria was quantified by real-time polymerase chain reaction (PCR) analysis as 97.7%.

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Citations

Aug 21, 2013·BioMed Research International·Shou-Qing Ni, Jian Zhang
Apr 24, 2012·Bioresource Technology·Albert MagríAriel A Szögi
Feb 14, 2013·Bioresource Technology·Dong WangFenglin Yang
Sep 18, 2014·Environmental Science and Pollution Research International·Long-Fei RenNing Guo
Feb 28, 2017·Environmental Science & Technology·Fangxu JiaYongzhen Peng
Feb 19, 2013·Iranian Journal of Environmental Health Science & Engineering·Ali Akbar BabaeiNadali Alavi
Apr 20, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Wen-Jie MaRen-Cun Jin
Feb 14, 2020·Chemosphere·Xianglong XuHongchen Wang
Nov 18, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Guangxue WuQidong Yin
Feb 19, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Huizhi HuXiangguo Zeng
Jan 13, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Juejun PanSitong Liu
Sep 7, 2018·Water Environment Research : a Research Publication of the Water Environment Federation·Xiaojin LiZhen He
Mar 6, 2018·Environmental Science & Technology·Yunpeng ZhaoSitong Liu
Jan 13, 2022·The Science of the Total Environment·Chukuan JiangChong-Jian Tang

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