Naslov
Biological nutrient removal: the effect of organic load

Autori
Širac, Tea ; Mikulin, Ana ; Špehar, Ana ; Landeka Dragičević, Tibela

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Environmental & Green Chemistry 2017 Posters / - , 2017, 111-111

Skup
6th International Conference on Environmental Chemistry and Engineering

Mjesto i datum
Rim, Italija, 24.07.2017. - 26.07.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
N and P removal, anoxic conditions

Sažetak
Biological nutrient removal (BNR) of nitrogen and phosphorus has been widely used in wastewater treatment practice to control eutrophication in receiving water bodies. The most widely used nitrogen removal methods are biological nitrification (aerobic transformation of NH4-N to NO2-N and NO3-N), and denitrification methods (anoxic reduction of NO3-N to N2). Simultaneous nitrification-denitrification process (SND), in compare to conventional biological nitrogen removal process, can offer several advantages including reducing carbon source and alkalinity consumption, low energy consumption, high nutrients removal efficiencies, and simplifying the treatment system. P removal is achieved through enhanced biological phosphorus removal (EBPR) under alternating anaerobic–aerobic conditions. Biological nutrient removal (N and P) in batch anoxic experiments was investigated. The initial concentration of P and N were 10-18 mg PO43—P/L and 48±2 mg NH4+-N/L. Sodium acetate was used as carbon source, at C/N 1 to C/N 7. Results indicated that the increase of C/N ratio improved efficiency of N removal in a range from 14.3 % at C/N 1 to 89, 7 % at C/N 7. And also, the highest P removal of 61% was achieved at C/N 4. Nutrient removal was achieved by simultaneous nitrification and denitrification, and phosphorus removal.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

POVEZANOST RADA