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https://doi.org/10.15255/KUI.2022.034

Nitrogen Removal with Aerobic Granules – Effect of Dissolved Oxygen and Carbon/Nitrogen Ratio

Mirjana Galant ; Usluga odvodnja d. o. o., Šime Kurelića 22, 52 000 Pazin, Hrvatska
Dijana Grgas orcid id orcid.org/0000-0003-0687-6524 ; Sveučilište u Zagrebu, Prehrambeno-biotehnološki fakultet, Pierottijeva ulica 6, 10 000 Zagreb
Tea Štefanac ; Sveučilište u Zagrebu, Prehrambeno-biotehnološki fakultet, Pierottijeva ulica 6, 10 000 Zagreb
Mirna Habuda-Stanić orcid id orcid.org/0000-0002-0089-9488 ; Sveučilište J.J. Strossmayera u Osijeku, Prehrambeno-tehnološki fakultet Osijek, F. Kuhača 18, 31 000 Osijek
Tibela Landeka Dragičević ; Sveučilište u Zagrebu, Prehrambeno-biotehnološki fakultet, Pierottijeva ulica 6, 10 000 Zagreb


Puni tekst: engleski pdf 443 Kb

str. 25-32

preuzimanja: 191

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Sažetak

Nitrogen removal efficiency related to the dissolved oxygen (DO) concentration (DO 1–7 mg l–1), carbon/nitrogen ratio (COD/N 1–14), and the effect of airflow (0.4–2.9 l min–1) related to the granule size were investigated. The average chemical oxygen demand (COD) removal of ≥ 90 % was achieved at COD/N ≥ 11, but the satisfactory N values in effluent for discharge into the surface waters were almost achieved at COD/N 14. DO of 2 mg l–1 is recommended for efficient removal of N and COD with mature granules. The size (diameter) of the granules decreases with increased airflow.

Ključne riječi

aerobic granules; COD removal; N removal; sodium acetate; synthetic wastewater

Hrčak ID:

291056

URI

https://hrcak.srce.hr/291056

Datum izdavanja:

11.1.2023.

Podaci na drugim jezicima: hrvatski

Posjeta: 719 *