Simultaneous nitrification and denitrification in immobilised biomass

• Autorzy: Zielinska M , Wojnowska-Baryla I.

Warianty tytułu

PL

Symultaniczna nitryfikacja i denitryfikacja w unieruchomionej biomasie

• Języki publikacji: EN

Abstrakty

EN

Nitrogen removal from communal wastewater by activated sludge immobilised in ceramic carriers with various internal structures was attributed to simultaneous nitrification and denitrification (SND). The experiment was performed with a hydraulic retention time (HRT) ranging from 70 to 15 minutes, under aeration conditions. The effectiveness of SND with aeration was as follows: in the 7-channelled carrier – from 59.2 to 91.0%, in the 3-channelled carrier – from 36.7 to 84.4%, in the 8-channelled carrier – from 46.2 to 73.0%. For a short HRT (30 and 15 minutes) the peak effectiveness of nitrogen removal (as a result of SND) per unit area of the carrier’s active surface was achieved in the 3-channelled carrier with the largest, 50% portion of free spaces.

PL

Usuwanie azotu ze ścieków komunalnych przez osad czynny unieruchomiony w nośnikach ceramicznych, różniących się strukturą wewnętrzną, następowało w wyniku symultanicznej nitryfikacji i denitryfikacji (SND). Eksperyment prowadzono w hydraulicznym czasie zatrzymania ścieków (HRT) od 70 do 15 min w warunkach napowietrzania. Efektywność SND w nośnikach wynosiła odpowiednio: w 7-kanałowym – od 59.2 do 91.0%, w 3-kanałowym – od 36.7 do 84.4%, w 8-kanałowym od 46.2 do 73.0%. W warunkach krótkiego HRT (30 i 15 min) najwyższą sprawność usuwania azotu w wyniku SND, w przeliczeniu na jednostkę powierzchni aktywnej nośnika, uzyskano w nośniku 3-kanałowym o największym 50% udziale wolnych przestrzeni.

• Wydawca: -
• Czasopismo: Polish Journal of Natural Sciences
• Rocznik: 2007
• Tom: 22
• Numer: 1
• Strony: 92-106
• Opis fizyczny: p.92-106,fig.,ref.

Twórcy

autor

Zielinska M

• University of Warmia and Mazury in Olsztyn, Sloneczna St. 45G, 10-709 Olsztyn, Poland

autor

Wojnowska-Baryla I.

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