6533b86efe1ef96bd12cb120

RESEARCH PRODUCT

Greenhouse gas from moving bed based integrated fixed film activated sludge membrane bioreactors

G. ManninaM. CapodiciA. CosenzaD. Di TrapaniV. LaudicinaH. ØDegaard

subject

MBRNitrous oxideSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleNitrous oxide; Emission factor; IFAS; MBR; UCTSettore AGR/13 - Chimica AgrariaUCTIFASEmission factor

description

The present paper reports the results of a nitrous oxide production investigation in a moving bed based integrated fixed film activated sludge (IFAS) membrane bioreactor (MBR) pilot plant designed in accordance with the UCT layout for biological phosphorous removal. Samples of gas and liquid were collected in order to measure the gaseous, as well as the dissolved concentration of N2O. Furthermore, the gas flow rate from each reactor was measured and the gas flux was estimated. The results confirmed that the anoxic reactor represents the main source of nitrous oxide production. A significant production of N2O was, however, also found in the anaerobic reactor, thus indicating a probable occurrence of the DPAOs activity.

yearjournalcountryeditionlanguage
2016-01-01
http://hdl.handle.net/10447/180708