Nitrogen removal processes from the liquid fraction of digested agro-wastes become more and more important as reduced nitrogen loads can be applied to land due to stringent European regulations. A pilot-scale SBR short-cut nitrogen removal process has been tested for more than 200 days and proved technically feasible in spite of high influent variability. Nitritation rates of up to 0.5 gN/(L d) (MLVSS = 7 gSS/L, DO = 0.8 mg/L, pH = 8.4) and NO2/NOx > 80% have seen achieved as well as 95% denitrification efficiencies. N2O emissions was highly dependent on denitrification at limiting C/N ratios.

Nitrification denitrification via nitrite in a pilot-scale sbr treating the liquid fraction of co-digested piggery/poultry manure and agro-wastes

SCAGLIONE, DAVIDE;FICARA, ELENA;CANZIANI, ROBERTO;MALPEI, FRANCESCA
2012-01-01

Abstract

Nitrogen removal processes from the liquid fraction of digested agro-wastes become more and more important as reduced nitrogen loads can be applied to land due to stringent European regulations. A pilot-scale SBR short-cut nitrogen removal process has been tested for more than 200 days and proved technically feasible in spite of high influent variability. Nitritation rates of up to 0.5 gN/(L d) (MLVSS = 7 gSS/L, DO = 0.8 mg/L, pH = 8.4) and NO2/NOx > 80% have seen achieved as well as 95% denitrification efficiencies. N2O emissions was highly dependent on denitrification at limiting C/N ratios.
2012
SIDISA 2012 - Sustainable Technology for Environmental Protection
9788890355721
digestate; nitritation; nitrous oxide emissions; piggery; short-cut nitrification
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/662894
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