Abstract：
:Wastewater samples were taken from an aerobic bioreactor, operated by a dairy processor in southeastern Australia to reduce nutrient and pollutant loads. Samples were taken over a two-year period, to determine whether trace organic compounds or physicochemical analyses of the wastewater could be used to discriminate the water taken before, during and after processing of the wastewater in the bioreactor. Multivariate analyses of the physicochemical data suggested that nitrate, pH and total dissolved nitrogen best described the infeed wastewater entering the bioreactor, while organic and particulate phosphorus concentrations where predominantly responsible for describing the composition of the content of the bioreactor. Gas chromatography-mass spectrometry data of organic compounds within the wastewater samples were also analysed via multivariate analyses. The analyses found that the compound 4-nitrophenol was associated with ammonia concentrations and mixed liquor wastewater. Therefore, 4-nitrophenol may possibly be used to act as an indicator of anaerobicity in aerobic bioreactors.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Heaven MW,Wild K,De Souza D,Nahid A,Tull D,Watkins M,Hannah M,Nash Ddoi
10.1016/j.biortech.2012.08.005subject
Has Abstractpub_date
2012-11-01 00:00:00pages
119-28eissn
0960-8524issn
1873-2976pii
S0960-8524(12)01173-Xjournal_volume
124pub_type
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