TY - JOUR
T1 - Seasonal and wastewater stream variation of trace organic compounds in a dairy processing plant aerobic bioreactor
AU - Heaven, Michael
AU - Wild, Karl
AU - Verheyen, Vincent
AU - Cruickshank, Alicia
AU - Watkins, Mark
AU - Nash, David
PY - 2011
Y1 - 2011
N2 - Bioreactors are often an integral part of dairy factory efforts to reduce the biological oxygen demand of their wastewater. In this study, infeed, mixed liquor and supernatant samples of an aerobic bioreactor used by a dairy factory in South-Eastern Australia were analyzed for nutrients and organic compounds using gas chromatography-mass spectrometry and physicochemical analyses. Despite different concentrations of organic inputs into the bioreactor, nutrients and trace organic compounds were reduced significantly (i.e. average concentration of trace organic compounds: infeed = 1681 mu g/L: mixed liquor = 257 mu g/L; supernatant = 23 mu g/L). However, during one sampling period the bioreactor was adversely affected by the organic loading. Trace organic compounds in the samples were predominantly fatty acids associated with animal products. The analyses suggest that it is possible to trace a disruptive input (i.e. infeed with high organic carbon concentrations) into an aerobic bioreactor by measuring concentrations of fatty acids or ammonia. (C) 2011 Elsevier Ltd. All rights reserved.
AB - Bioreactors are often an integral part of dairy factory efforts to reduce the biological oxygen demand of their wastewater. In this study, infeed, mixed liquor and supernatant samples of an aerobic bioreactor used by a dairy factory in South-Eastern Australia were analyzed for nutrients and organic compounds using gas chromatography-mass spectrometry and physicochemical analyses. Despite different concentrations of organic inputs into the bioreactor, nutrients and trace organic compounds were reduced significantly (i.e. average concentration of trace organic compounds: infeed = 1681 mu g/L: mixed liquor = 257 mu g/L; supernatant = 23 mu g/L). However, during one sampling period the bioreactor was adversely affected by the organic loading. Trace organic compounds in the samples were predominantly fatty acids associated with animal products. The analyses suggest that it is possible to trace a disruptive input (i.e. infeed with high organic carbon concentrations) into an aerobic bioreactor by measuring concentrations of fatty acids or ammonia. (C) 2011 Elsevier Ltd. All rights reserved.
UR - http://www.sciencedirect.com.ezproxy.lib.monash.edu.au/science?_ob=MiamiImageURL&_cid=271433&_user=542840&_pii=S0960852411008054&_check=y&_origin=&_co
U2 - 10.1016/j.biortech.2011.06.002
DO - 10.1016/j.biortech.2011.06.002
M3 - Article
VL - 102
SP - 7727
EP - 7736
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
IS - 17
ER -