izpis_h1_title_alt

Microbial response on the first full-scale DEMON® biomass transfer for mainstream deammonification
ID Podmirseg, Sabine M. (Avtor), ID Gómez-Brandón, María (Avtor), ID Muik, Markus (Avtor), ID Stres, Blaž (Avtor), ID Hell, Martin (Avtor), ID Pümpel, Thomas (Avtor), ID Murthy, Sudhir (Avtor), ID Chandran, Kartik (Avtor), ID Park, Hongkeun (Avtor), ID Insam, Heribert (Avtor), ID Wett, Bernhard (Avtor)

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Izvleček
Sidestream partial nitritation and deammonification (pN/A) of high-strength ammonia wastewater is a well- established technology. Its expansion to the mainstream is, however mainly impeded by poor retention of anaerobic ammonia oxidizing bacteria (AnAOB), insufficient repression of nitrite oxidizing bacteria (NOB) and difficult control of soluble chemical oxygen demand and nitrite levels. At the municipal wastewater treatment plant in Strass (Austria) the microbial consortium was exhaustively monitored at full-scale over one and a half year with regular transfer of sidestream DEMON® biomass and further retention and enrichment of granular anammox biomass via hydrocyclone operation. Routine process parameters were surveyed and the response and evolution of the microbiota was followed by molecular tools, ex-situ activity tests and further, AnAOB quantification through particle tracking and heme measurement. After eight months of operation, the first anaerobic, simultaneous depletion of ammonia and nitrite was observed ex-situ, together with a direction to higher nitrite generation (68% of total NOx-N) as compared to nitrate under aerobic conditions. Our dissolved oxygen (DO) scheme allowed for transient anoxic conditions and had a strong influence on nitrite levels and the NOB community, where Nitrobacter eventually dominated Nitrospira. The establishment of a minor but stable AnAOB biomass was accompanied by the rise of Chloroflexi and distinct emergence of Chlorobi, a trend not seen in the sidestream system. Interestingly, the most pronounced switch in the microbial community and noticeable NOB repression occurred during unfavorable conditions, i.e. the cold winter season and high organic load. Further abatement of NOB was achieved through bioaugmentation of aerobic ammonia oxidizing bacteria (AerAOB) from the sidestream-DEMON® tank. Performance of the sidestream pN/A was not impaired by this operational scheme and the average volumetric nitrogen removal rate of the mainstream even doubled in the second half of the monitoring campaign. We conclude that a combination of both, regular sidestream-DEMON® biomass transfer and granular SRT increase via hydrocyclone operation was crucial for AnAOB establishment within the mainstream.

Jezik:Angleški jezik
Ključne besede:wastewater treatment, activity tests, microbial community, heme quantification, partial nitritation anammox
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
FGG - Fakulteta za gradbeništvo in geodezijo
Leto izida:2022
Status objave pri reviji:Objavljeno
Verzija članka:Založnikova različica članka
Št. strani:11 str.
Številčenje:Vol. 218, art. 118517
PID:20.500.12556/RUL-137341 Povezava se odpre v novem oknu
UDK:579:502
ISSN pri članku:1879-2448
DOI:10.1016/j.watres.2022.118517 Povezava se odpre v novem oknu
COBISS.SI-ID:106410755 Povezava se odpre v novem oknu
Datum objave v RUL:13.06.2022
Število ogledov:35
Število prenosov:20
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Water Research
Založnik:Pergamon
ISSN:1879-2448
COBISS.SI-ID:23055365 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:27.04.2022

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:mikrobiologija, odpadne vode, amoniak, varstvo okolja

Gradivo je financirano iz projekta

Financer:Drugi - Drug financer ali več financerjev
Program financ.:United States Environmental Protection Agency

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Ministerio de Economía y Competitividad
Številka projekta:YC-2016–21231

Program financ.:University of Innsbruck

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Številka projekta:P2-0180
Naslov:Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij

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