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Biotraitement aerobie, en reacteur completement agite, d'une eau residuaire de laiterie
Author(s) -
Mayer R. C.,
Rouleau D.,
Royer G.
Publication year - 1982
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450600510
Subject(s) - biomass (ecology) , substrate (aquarium) , chemistry , arrhenius equation , continuous stirred tank reactor , analytical chemistry (journal) , volumetric flow rate , yield (engineering) , kinetic energy , thermodynamics , chromatography , activation energy , physics , ecology , quantum mechanics , biology
Synthetic residual waters from dairies have been subjected to a laboratory‐scale treatment study. A thoroughly‐stirred continuous‐flow reactor involving no recirculation of the biomass has been used. The operation‐control two parameters have been (a) the mean residence time of the biomass and (b) the bioreactor temperature. The variables have been (i) the substrate removal expressed in terms of the chemical demand in oxygen (D.C.O.) and (ii) the biomass production expressed in terms of volatile suspended matters. The Monod model has adequately described the system behavior. The kinetic constants k, k d . Y, K , have been determined at 5, 15 and 25°C. The values of the substrate maximum rate of assimilation per biomass unit ( k ) and of the specific rate of the biomass deterioration rate ( k d ) have characterized the constants according to the Arrhenius Law in the range covered. The values of the half‐rate constant K s have been high at the above‐mentioned three temperatures in comparison with the conventional values. The maximum coefficient of the yield ( Y ) has varied little with the temperature.