Inhibition effect of free ammonia and free nitrous acid on nitrite-oxidising bacteria during sludge liquor treatment: influence of feeding strategy
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F14%3A64094" target="_blank" >RIV/60460709:41210/14:64094 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22320/14:43897344
Výsledek na webu
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DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Inhibition effect of free ammonia and free nitrous acid on nitrite-oxidising bacteria during sludge liquor treatment: influence of feeding strategy
Popis výsledku v původním jazyce
The importance of feeding strategy for the long-term selective inhibition of nitrite-oxidising bacteria (NOB) was demonstrated by comparison of laboratory-scale bioreactors: CSTR and SBR. Sludge liquor containing ammonia nitrogen in a range of 970?1500 mg L-1 was the influent of the reactors. The experiments were performed at (23 ? 2) °C, with high concentration of dissolved oxygen (up to 8 mg L-1) and with unlimited sludge retention time. In the SBR, permanent restriction of NOB activity was achieved for more than 700 days by the strong inhibition effect of fluctuating concentrations of free ammonia and free nitrous acid during the operational cycles of SBR. In contrast, nitrite-oxidising bacteria were able to gradually adapt to the conditions prevailing in CSTR and produce nitrate although the concentration of free ammonia and free nitrous acid significantly exceeded inhibition limits for NOB activity in this system.
Název v anglickém jazyce
Inhibition effect of free ammonia and free nitrous acid on nitrite-oxidising bacteria during sludge liquor treatment: influence of feeding strategy
Popis výsledku anglicky
The importance of feeding strategy for the long-term selective inhibition of nitrite-oxidising bacteria (NOB) was demonstrated by comparison of laboratory-scale bioreactors: CSTR and SBR. Sludge liquor containing ammonia nitrogen in a range of 970?1500 mg L-1 was the influent of the reactors. The experiments were performed at (23 ? 2) °C, with high concentration of dissolved oxygen (up to 8 mg L-1) and with unlimited sludge retention time. In the SBR, permanent restriction of NOB activity was achieved for more than 700 days by the strong inhibition effect of fluctuating concentrations of free ammonia and free nitrous acid during the operational cycles of SBR. In contrast, nitrite-oxidising bacteria were able to gradually adapt to the conditions prevailing in CSTR and produce nitrate although the concentration of free ammonia and free nitrous acid significantly exceeded inhibition limits for NOB activity in this system.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
DJ - Znečištění a kontrola vody
OECD FORD obor
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Návaznosti výsledku
Projekt
<a href="/cs/project/QI91C199" target="_blank" >QI91C199: Optimalizace technologie faremního vermikompostování</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Chemical Papers-Chemicke zvesti
ISSN
0366-6352
e-ISSN
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Svazek periodika
68
Číslo periodika v rámci svazku
7
Stát vydavatele periodika
SK - Slovenská republika
Počet stran výsledku
8
Strana od-do
871-878
Kód UT WoS článku
000332958500003
EID výsledku v databázi Scopus
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