PMID- 29964997 OWN - NLM STAT- MEDLINE DCOM- 20190123 LR - 20221207 IS - 0250-3301 (Print) IS - 0250-3301 (Linking) VI - 39 IP - 4 DP - 2018 Apr 8 TI - [Achieving Partial Nitritation in a Continuous-flow Aerobic Granular Sludge Reactor at Different Temperatures Through Ratio Control]. PG - 1713-1719 LID - 10.13227/j.hjkx.201708067 [doi] AB - Mature aerobic granular sludge (AGS) was inoculated in a continuous-flow reactor to treat low ammonia sewage, and the feasibility of achieving partial nitritation in a continuous-flow aerobic sludge system and the demand for R value (the ratio of dissolved oxygen and ammonia nitrogen) when partial nitritation is achieved at different temperatures (30, 20, and 10℃) were investigated. The control strategy was designed to maintain a constant ratio between dissolved oxygen (DO) and ammonia nitrogen (NH(4)(+)-N). The results revealed that stable nitritation in a continuous-flow aerobic sludge reactor could be achieved via ratio control, and the value of R were 0.50 (+/-0.05), 0.35 (+/-0.03), and 0.20 (+/-0.02) at the temperatures 30, 20, and 10℃, respectively, from which it can be concluded that stronger oxygen-limiting conditions were required when the temperature was lower. The experiment of fluorescence in situ hybridization (FISH) revealed that ammonia oxidizing bacteria (AOB) have a certain concentration, and the relative number of nitrite oxidizing bacteria (NOB) gradually reduced through the ratio control strategy. Based on the ratio control strategy and the characteristics of wastewater quality, full nitritation of high ammonia wastewater may be allowed; however, for low ammonia wastewater, only partial nitritation is recommended. FAU - Liang, Dong-Bo AU - Liang DB AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. FAU - Bian, Wei AU - Bian W AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. FAU - Kan, Rui-Zhe AU - Kan RZ AD - City Planning Technology Service Center of Beijing, Beijing 100045, China. FAU - Wang, Wen-Xiao AU - Wang WX AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. FAU - Zhao, Qing AU - Zhao Q AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. FAU - Sun, Yi-Qi AU - Sun YQ AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. FAU - Li, Jun AU - Li J AD - National Engineering Laboratory of Urban Sewage Advanced Treatment and Resource Utilization Technology, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. LA - chi PT - Journal Article PL - China TA - Huan Jing Ke Xue JT - Huan jing ke xue= Huanjing kexue JID - 8405344 RN - 0 (Nitrites) RN - 0 (Sewage) RN - 0 (Waste Water) RN - N762921K75 (Nitrogen) SB - IM MH - Bacteria/metabolism MH - *Bioreactors MH - In Situ Hybridization, Fluorescence MH - *Nitrification MH - Nitrites MH - Nitrogen MH - *Sewage MH - *Temperature MH - Waste Disposal, Fluid/*methods MH - Wastewater OTO - NOTNLM OT - aerobic granular sludge OT - continuous-flow OT - low temperature OT - partial nitritation OT - ratio control EDAT- 2018/07/03 06:00 MHDA- 2019/01/24 06:00 CRDT- 2018/07/03 06:00 PHST- 2018/07/03 06:00 [entrez] PHST- 2018/07/03 06:00 [pubmed] PHST- 2019/01/24 06:00 [medline] AID - 10.13227/j.hjkx.201708067 [doi] PST - ppublish SO - Huan Jing Ke Xue. 2018 Apr 8;39(4):1713-1719. doi: 10.13227/j.hjkx.201708067.