TY - GEN
T1 - Effect of biochemical storage on the denitrification potential of acetate in sequencing batch reactors
AU - Ciggin, A. S.
AU - Karahan, O.
AU - Orhon, D.
PY - 2007
Y1 - 2007
N2 - This study evaluates the effect biochemical storage on the denitrification potential (NDP) of acetate. The fate of bacterial storage is evaluated in a sequencing batch reactor system operated in a sequence of anoxic/aerobic phases, fed with acetate as a pulse and continuously under anoxic conditions. NDP is defined based on system stoichiometry both for direct growth and storage on acetate. Experimental results do not support conceptual calculations based on system stoichiometry, yielding a higher denitrification potential, NDP, for continuous feeding than the NDP obtained with pulse feeding, due to partial utilisation of the stored PHB within the anoxic phase. The nitrate, acetate and poly-β-hydroxybutyrate (PHB) profiles obtained in the experimental studies were used in model calibrations for two different feeding patterns. Results of model simulations confirm the experimental results and evaluate the effects imposed on the denitrification potential by sludge age and the anoxic volume ratio.
AB - This study evaluates the effect biochemical storage on the denitrification potential (NDP) of acetate. The fate of bacterial storage is evaluated in a sequencing batch reactor system operated in a sequence of anoxic/aerobic phases, fed with acetate as a pulse and continuously under anoxic conditions. NDP is defined based on system stoichiometry both for direct growth and storage on acetate. Experimental results do not support conceptual calculations based on system stoichiometry, yielding a higher denitrification potential, NDP, for continuous feeding than the NDP obtained with pulse feeding, due to partial utilisation of the stored PHB within the anoxic phase. The nitrate, acetate and poly-β-hydroxybutyrate (PHB) profiles obtained in the experimental studies were used in model calibrations for two different feeding patterns. Results of model simulations confirm the experimental results and evaluate the effects imposed on the denitrification potential by sludge age and the anoxic volume ratio.
KW - Acetate
KW - Denitrification potential
KW - Modelin
KW - Poly-β-hydroxybutyrate (PHB)
KW - Process stoichiometry
KW - Sequencing batch reactor
KW - Substrate storage
UR - http://www.scopus.com/inward/record.url?scp=34250001081&partnerID=8YFLogxK
U2 - 10.2166/wst.2007.330
DO - 10.2166/wst.2007.330
M3 - Conference contribution
C2 - 17564393
AN - SCOPUS:34250001081
SN - 1843395940
SN - 9781843395942
T3 - Water Science and Technology
SP - 261
EP - 268
BT - Waste Management Problems in Agro-Industires 2006
A2 - Orhon, D.
A2 - Tasli, R.
A2 - Karahan, O.
A2 - Zengin, G.E.
ER -
