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Statements

Subject Item
n2:RIV%2F60461373%3A22320%2F14%3A43897343%21RIV15-MSM-22320___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
The application of nitrification-denitrification over nitrite (nitritation-denitritation) with municipal (i.e. diluted and cold (or low-temperature)) wastewater can substantially improve the energy balance of municipal wastewater treatment plants. For the accumulation of nitrite, it is crucial to inhibit nitrite-oxidizing bacteria (NOB) with simultaneous proliferation of ammonium-oxidizing bacteria (AOB). The present study describes the effect of the influent total ammonium nitrogen (TAN) concentration on AOB and NOB activity in two moving bed biofilm reactors operated as sequencing batch reactors (SBR) at 15 degrees C (SBR I) and 21 degrees C (SBR II). The reactors were fed with diluted reject water containing 600, 300, 150 and 75 mg TAN L-1. The only factor limiting NOB activity in these reactors was the high concentrations of free ammonia and/or free nitrous acid (FNA) during the SBR cycles. Nitrite accumulation was observed with influents containing 600, 300 and 150 mg TAN L-1 in SBR I and 600 and 300 in SBR II. Once nitrate production established in the reactors, the increase of influent TAN concentration up to the original 600 mg TAN L-1 did not limit NOB activity. This was due to the massive development of NOB clusters throughout the biofilm that were able to cope with faster formation of FNA. The results of the fluorescence in situ hybridization analysis preliminarily showed the stratification of bacteria in the biofilm. The application of nitrification-denitrification over nitrite (nitritation-denitritation) with municipal (i.e. diluted and cold (or low-temperature)) wastewater can substantially improve the energy balance of municipal wastewater treatment plants. For the accumulation of nitrite, it is crucial to inhibit nitrite-oxidizing bacteria (NOB) with simultaneous proliferation of ammonium-oxidizing bacteria (AOB). The present study describes the effect of the influent total ammonium nitrogen (TAN) concentration on AOB and NOB activity in two moving bed biofilm reactors operated as sequencing batch reactors (SBR) at 15 degrees C (SBR I) and 21 degrees C (SBR II). The reactors were fed with diluted reject water containing 600, 300, 150 and 75 mg TAN L-1. The only factor limiting NOB activity in these reactors was the high concentrations of free ammonia and/or free nitrous acid (FNA) during the SBR cycles. Nitrite accumulation was observed with influents containing 600, 300 and 150 mg TAN L-1 in SBR I and 600 and 300 in SBR II. Once nitrate production established in the reactors, the increase of influent TAN concentration up to the original 600 mg TAN L-1 did not limit NOB activity. This was due to the massive development of NOB clusters throughout the biofilm that were able to cope with faster formation of FNA. The results of the fluorescence in situ hybridization analysis preliminarily showed the stratification of bacteria in the biofilm.
dcterms:title
The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor
skos:prefLabel
The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor The impact of influent total ammonium nitrogen concentration on nitrite-oxidizing bacteria inhibition in moving bed biofilm reactor
skos:notation
RIV/60461373:22320/14:43897343!RIV15-MSM-22320___
n3:aktivita
n7:R n7:S
n3:aktivity
R, S
n3:cisloPeriodika
6
n3:dodaniDat
n13:2015
n3:domaciTvurceVysledku
n11:3443701 Catrysse, Michael n11:3167488 n11:5971209 Jonatová, Ivana
n3:druhVysledku
n9:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
20653
n3:idVysledku
RIV/60461373:22320/14:43897343
n3:jazykVysledku
n12:eng
n3:klicovaSlova
sequencing batch reactor; nitrite-oxidizing bacteria; nitritation; biological wastewater treatment; ammonium-oxidizingbacteria
n3:klicoveSlovo
n4:ammonium-oxidizingbacteria n4:nitrite-oxidizing%20bacteria n4:nitritation n4:sequencing%20batch%20reactor n4:biological%20wastewater%20treatment
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[51F971A788DF]
n3:nazevZdroje
Water Science and Technology
n3:obor
n17:DJ
n3:pocetDomacichTvurcuVysledku
5
n3:pocetTvurcuVysledku
7
n3:rokUplatneniVysledku
n13:2014
n3:svazekPeriodika
69
n3:tvurceVysledku
Volcke, Eveline Jonatová, Ivana Švehla, Pavel Bartáček, Jan Stryjová, Hana Catrysse, Michael Kouba, Vojtěch
n3:wos
000334505800014
s:issn
0273-1223
s:numberOfPages
7
n16:doi
10.2166/wst.2013.757
n14:organizacniJednotka
22320