How biomass growth mode affects ammonium oxidation start-up and NOB inhibition in the partial nitritation of cold and diluted reject water

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913547" target="_blank" >RIV/60461373:22320/17:43913547 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41210/19:79918 RIV/60461373:22320/19:43920111

Výsledek na webu

<a href="http://www.tandfonline.com/doi/pdf/10.1080/09593330.2017.1403491?needAccess=true" target="_blank" >http://www.tandfonline.com/doi/pdf/10.1080/09593330.2017.1403491?needAccess=true</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/09593330.2017.1403491" target="_blank" >10.1080/09593330.2017.1403491</a>

Jazyk výsledku

angličtina

Název v původním jazyce

How biomass growth mode affects ammonium oxidation start-up and NOB inhibition in the partial nitritation of cold and diluted reject water

Popis výsledku v původním jazyce

The inhibition of undesirable nitrite oxidizing bacteria (NOB) and desirable ammonium oxidizing bacteria (AOB) by free ammonia (FA) and free nitrous acid (FNA) in partial nitritation (PN) is crucially affected by the biomass growth mode (suspended sludge, biofilm, encapsulation). But, the limitations of these modes towards less concentrated reject waters (≤600 mg-N L−1) are unclear. Therefore, this work compares the start-up and stability of three PN sequencing batch reactors (SBRs) with biomass grown in one of the three modes: suspended sludge, biofilm and biomass encapsulated in polyvinyl alcohol (PVA) pellets. The SBRs were operated at 15°C with influent total ammonium nitrogen (TAN) concentrations of 75–600 mg-TAN L−1. PN start-up was twice as fast in the biofilm and encapsulated biomass SBRs than in the suspended sludge SBR. After start-up, PN in the biofilm and suspended sludge SBRs was stable at 150–600 mg-TAN L−1. But, at 75 mg-TAN L−1, full nitrification gradually developed. In the encapsulated biomass SBR, full nitrification occurred even at 600 mg-TAN L−1, showing that NOB in this set-up can adapt even to 4.3 mg-FA L−1 and 0.27 mg-FNA L−1. Thus, PN in the biofilm was best for the treatment of an influent containing 150–600 mg-TAN L−1.

Název v anglickém jazyce

How biomass growth mode affects ammonium oxidation start-up and NOB inhibition in the partial nitritation of cold and diluted reject water

Popis výsledku anglicky

The inhibition of undesirable nitrite oxidizing bacteria (NOB) and desirable ammonium oxidizing bacteria (AOB) by free ammonia (FA) and free nitrous acid (FNA) in partial nitritation (PN) is crucially affected by the biomass growth mode (suspended sludge, biofilm, encapsulation). But, the limitations of these modes towards less concentrated reject waters (≤600 mg-N L−1) are unclear. Therefore, this work compares the start-up and stability of three PN sequencing batch reactors (SBRs) with biomass grown in one of the three modes: suspended sludge, biofilm and biomass encapsulated in polyvinyl alcohol (PVA) pellets. The SBRs were operated at 15°C with influent total ammonium nitrogen (TAN) concentrations of 75–600 mg-TAN L−1. PN start-up was twice as fast in the biofilm and encapsulated biomass SBRs than in the suspended sludge SBR. After start-up, PN in the biofilm and suspended sludge SBRs was stable at 150–600 mg-TAN L−1. But, at 75 mg-TAN L−1, full nitrification gradually developed. In the encapsulated biomass SBR, full nitrification occurred even at 600 mg-TAN L−1, showing that NOB in this set-up can adapt even to 4.3 mg-FA L−1 and 0.27 mg-FNA L−1. Thus, PN in the biofilm was best for the treatment of an influent containing 150–600 mg-TAN L−1.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20800 - Environmental biotechnology

Projekt

<a href="/cs/project/QK1710176" target="_blank" >QK1710176: Dvoustupňová úprava kapalné frakce fermentačního zbytku umožňující racionální využití živin a vody</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental Technology

ISSN

0959-3330

e-ISSN

—

Svazek periodika

2017

Číslo periodika v rámci svazku

Published online: 21 Nov 2017

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85034627737