caa a22 4500 605502250 CHVBK 20210128100604.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00253-014-6363-6 doi (NATIONALLICENCE)springer-10.1007/s00253-014-6363-6 Rapid formation of nitrifying granules treating high-strength ammonium wastewater in a sequencing batch reactor [Elektronische Daten] [Fang-Yuan Chen, Yong-Qiang Liu, Joo-Hwa Tay, Ping Ning] Short initial settling time and rapidly increased ammonium nitrogen loading were employed to cultivate nitrifying granular sludge treating inorganic wastewater with 1000mg/L ammonium nitrogen. It was found that the nitrifying granule-dominant sludge was formed in a sequencing batch reactor (SBR) with influent ammonium concentration increased from 200 to 1000mg N/L within 55days. During the following 155-day operation period, nitrifying granules exhibited good performance with an ammonium removal efficiency of 99%. In the meantime, sludge volume index (SVI) decreased from 92 to 15mL/g and the mean size of the nitrifying granules increased from 106 to 369μm. Mixed liquor suspended solids (MLSS) decreased from the initial 6.4 to around 3g/L during the granulation period and increased to over 10g/L at the end of the operation. The long-term stability of nitrifying granules and the reactor performance were not negatively affected by inhibition from free ammonia (FA) and free nitrous acid (FNA) in this study. This makes the granule sludge technology promising in treating high-strength ammonium wastewater in practice. Springer-Verlag Berlin Heidelberg, 2015 Nitrifying granule nationallicence Nitrification nationallicence Free ammonia (FA) nationallicence Free nitrous acid (FNA) nationallicence High-strength ammonium nationallicence Stability nationallicence Sequencing batch reactor (SBR) nationallicence Chen Fang-Yuan College of Environmental Science and Engineering, Kunming University of Science and Technology, 282 Xuefu Road, 650093, Kunming, People's Republic of China aut Liu Yong-Qiang Faculty of Engineering and the Environment, University of Southampton, SO17 1BJ, Southampton, UK aut Tay Joo-Hwa Schulich School of Engineering, University of Calgary, University Drive NW, T2N 1N4, Calgary, Canada aut Ning Ping College of Environmental Science and Engineering, Kunming University of Science and Technology, 282 Xuefu Road, 650093, Kunming, People's Republic of China aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/10(2015-05-01), 4445-4452 0175-7598 99:10<4445 2015 99 253 https://doi.org/10.1007/s00253-014-6363-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-014-6363-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Fang-Yuan College of Environmental Science and Engineering, Kunming University of Science and Technology, 282 Xuefu Road, 650093, Kunming, People's Republic of China aut NATIONALLICENCE 700 1- Liu Yong-Qiang Faculty of Engineering and the Environment, University of Southampton, SO17 1BJ, Southampton, UK aut NATIONALLICENCE 700 1- Tay Joo-Hwa Schulich School of Engineering, University of Calgary, University Drive NW, T2N 1N4, Calgary, Canada aut NATIONALLICENCE 700 1- Ning Ping College of Environmental Science and Engineering, Kunming University of Science and Technology, 282 Xuefu Road, 650093, Kunming, People's Republic of China aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/10(2015-05-01), 4445-4452 0175-7598 99:10<4445 2015 99 253