Yan Guo, Eli Hendrik Sanjaya, Chao Rong, Tianjie Wang, Zibin Luo, Hong Chen, Hong Wang, Taira Hanaoka, Shinichi Sakemi, Masami Ito, Shigeki Kobayashi, Masumi Kobayashi, Yu-You Li
At ambient temperature condition, the one-stage partial nitritation/anammox (PNA) process has been successfully adopted to treat the filtrate from the mainstream anaerobic membrane bioreactor (AnMBR). However, there is no investigation of the performance of this process at low-temperature condition. In this study, the nitrogen removal performance of a pilot-scale PNA reactor at the temperature of 15 °C for treating the filtrate of a mainstream AnMBR was investigated. The nitrogen removal rate of 0.09 kg/m3/d and the nitrogen removal efficiency of 37.6% were achieved. The anammox reaction was the rate-limiting step of the nitrogen removal. Nitrogen removal was attributed in part to denitrification activity. The microbial community analysis confirmed that the main functional bacteria comprised of genus Nitrosomonas and genus Kuenenia. In sum, this research demonstrated the applicability of PNA process for mainstream AnMBR filtrate treatment to some extent and enriched the related knowledge. © 2022 Elsevier Ltd
Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba Aoba-ku, Miyagi, Sendai, 980-8579, Japan; Department of Chemistry, State University of Malang (Universitas Negeri Malang), Jl. Semarang No. 5, East Java, Malang, 65145, Indonesia; Graduate School of Environmental Studies, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Miyagi, Sendai, 980-8579, Japan; Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha University of Science & Technology, Changsha, 410004, China; Solution Engineering Group, Environmental Engineering Department, Mitsubishi Kakoki Kaisha, Ltd, 1-2 Miyamae-Cho, Kawasaki-Ku, Kanagawa, Kawasaki, 210-0012, Japan; Global Water Recycling and Reuse System Association, Japan, 5-1, Soto-Kanda 1-Chome Chiyoda-Ku, Tokyo, 101-0021, Japan; Separation and Aqua Chemicals Department, Mitsubishi Chemical Corporation, Gate City Osaki East Tower, 11-2 Osaki 1-chome Shinagawa-Ku, Tokyo, 141-0032, Japan
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