How input active biomass affects sludge age and process stability
Article Abstract:
The sludge age for the active biomass in suspended-growth reactors has been inaccurately determined, when the reactors are charged with active biomass. The definition given by the researcher is valid only for X(super 0)(sub a)=0, reflecting an ambiguity resulting from the inconsistency between the representations of the numerator and the denominator in the formula theta(sub x) =XaV/muXaV. Such an ambiguty leads to more complicated and tedious performance analyses.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1997
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Modeling and pilot-scale experimental verification for predenitrification process
Article Abstract:
A model for predenitrification process was developed and subjected to pilot plant tests. The model considers temperature and pH factors in nitrifier growth rate. It also considers secondary clarifiers in terms of sludge thickening and height when compared to the standard IAWPRC model. The tests conducted at the Gainesville, FL, Kanapaha Wastewater Treatment plant showed the effectiveness of the model in determining ammonia and nitrate nitrogen concentrations.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1992
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Operational strategies for predenitrification process
Article Abstract:
A mathematical model of the predenitrification process is developed to determine the effects of different variables on nitrogen. Results show that nitrogen removal is independent of flow rate but dependent on solids residence time (SRT) value, and different SRT values are available for different flow rates. Also clarifier bioreactions do not affect performance. One advantage of the model is its ability to evaluate wastewater treatment plant designs.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1992
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