Naslov
The potential of dairy wastewater for denitrification

Autori
Landeka Dragičević, Tibela ; Zanoški Hren, Marijana ; Grgas, Dijana ; Buzdum, Igor ; Čurlin, Mirjana

Izvornik
Mljekarstvo (0026-704X) 60 (2010), 3; 191-197

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
dairy wastewater; denitrification; microbial culture of nitrificants and denitrificants

Sažetak
In this work the potential of dairy wastewater for denitrification process by means of a microbial culture of nitrificants and denitrificants was investigated. The aim of this work was to remove nitrate by using organic compounds from the dairy wastewater as an electron donors. The minimal ratio of COD/NO3-N of 10 (COD-chemical oxygen demand/NO3-N-nitrate nitrogen) was required to achieve complete reduction of NO3-N. The microbial culture of nitrificants and denitrificants, that was previously adapted on the dairy wastewater, carried out nitrate reduction with a different sub¬strate utilization rate. The denitrification rate of 5.75 mg NO3-N/Lh was achieved at the beginning of denitrification when the microbial culture utilizes readily biodegradable COD. Further degradation occurred with the denitrification rate of 1.7 mg NO3-N/Lh.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

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