Biological phosphorus removal from slaughterhouse
wastewater has not received much
attention. This requires investigation, since in
most cases phosphorus concentrations in
slaughterhouse wastewater are significantly
higher than in domestic wastewater. High
levels (> 200 mg/l) of volatile fatty acids,
especially acetic acid, enhance BPR (Loetter
& Murphy, 1988). Unlike domestic sewage,
which is usually limited in this material,
slaughterhouse treatment systems can readily
supply a sidestream from an acidogenic anaerobic
pond or reactor.
(iv) There is increasing concern that under certain
conditions, a large proportion of
nitrogen oxides (N20, NO) rather than nitrogen
gas (N2) are generated by microbial
action. Nitrogen oxides contribute to greenhouse
warming and ozone destruction
(Banin, 1986). This has become a focus ofattention and the outcome may have a significant
impact on how AS-BNR systems are
operated.
Biological phosphorus removal from slaughterhousewastewater has not received muchattention. This requires investigation, since inmost cases phosphorus concentrations inslaughterhouse wastewater are significantlyhigher than in domestic wastewater. Highlevels (> 200 mg/l) of volatile fatty acids,especially acetic acid, enhance BPR (Loetter& Murphy, 1988). Unlike domestic sewage,which is usually limited in this material,slaughterhouse treatment systems can readilysupply a sidestream from an acidogenic anaerobicpond or reactor.(iv) There is increasing concern that under certainconditions, a large proportion ofnitrogen oxides (N20, NO) rather than nitrogengas (N2) are generated by microbialaction. Nitrogen oxides contribute to greenhousewarming and ozone destruction(Banin, 1986). This has become a focus ofattention and the outcome may have a significantimpact on how AS-BNR systems areoperated.
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