PMID- 27494102 OWN - NLM STAT- MEDLINE DCOM- 20170123 LR - 20181202 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 219 DP - 2016 Nov TI - The role of residual quantities of suspended sludge on nitrogen removal efficiency in a deammonifying moving bed biofilm reactor. PG - 212-218 LID - S0960-8524(16)31114-2 [pii] LID - 10.1016/j.biortech.2016.07.134 [doi] AB - In a moving bed biofilm reactor (MBBR) system, the vast majority of biomass is immobilized as biofilm besides small amounts of suspension. In this study, the influence of the individual biomass components of a deammonifying MBBR, the biofilm on carriers (BC), residual suspended biomass (SB) with a volatile suspended solids concentration of 0.09+/-0.03g/L, and its combination (BC+SB) on nitrogen removal efficiency was investigated. While the performance was highest for BC+SB (0.42kgN/(m(3).d)), it was reduced by a factor of 3.5 for BC solely. SB itself was only capable of nitrite accumulation. This suggests a high abundance of AOBs within suspension besides the coexistence of AOBs and anammox bacteria in the biofilm, which could be supported by results using fluorescence in situ hybridization(FISH). Thus, small amounts of suspended microorganisms can positively influence the deammonification's efficiency. If this fraction is partially washed out, the system recovers nevertheless within hours. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Leix, Carmen AU - Leix C AD - Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748 Garching, Germany. FAU - Drewes, Jorg E AU - Drewes JE AD - Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748 Garching, Germany. FAU - Koch, Konrad AU - Koch K AD - Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, 85748 Garching, Germany. Electronic address: k.koch@tum.de. LA - eng PT - Journal Article DEP - 20160730 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Sewage) RN - N762921K75 (Nitrogen) SB - IM MH - Bacteria MH - *Biofilms MH - Biomass MH - Bioreactors/*microbiology MH - Denitrification MH - In Situ Hybridization, Fluorescence MH - Nitrogen/chemistry MH - Sewage/*microbiology OTO - NOTNLM OT - Anammox OT - Deammonification OT - FISH OT - MBBR OT - Nitrogen removal efficiency EDAT- 2016/08/06 06:00 MHDA- 2017/01/24 06:00 CRDT- 2016/08/06 06:00 PHST- 2016/06/11 00:00 [received] PHST- 2016/07/28 00:00 [revised] PHST- 2016/07/29 00:00 [accepted] PHST- 2016/08/06 06:00 [entrez] PHST- 2016/08/06 06:00 [pubmed] PHST- 2017/01/24 06:00 [medline] AID - S0960-8524(16)31114-2 [pii] AID - 10.1016/j.biortech.2016.07.134 [doi] PST - ppublish SO - Bioresour Technol. 2016 Nov;219:212-218. doi: 10.1016/j.biortech.2016.07.134. Epub 2016 Jul 30.