Biodegradability of swine effluents I. Oxygen consumption

Abstract

Positive and ncgative effects of dilution of raw effluents from swine breeding are discussed, as to the treatability of those waste waters. Its effects on oxygen consumption and on the variation of inhibitory actions possibly observed, are studied and quantified. Using BRADENDER and VANDE-FUTTE techniques based on peptone degriidation, and determining PIiELPS'S equation parameters for different Consumption curves observed, the advantages of diliition VCWLIS treatment of raw effluents is studied. Receiyed June 25, 1984 * The consumption of 0, in the peptone solution (28 g N 1-l) is expressed by the equation: Lf = 259.4 X 10-o.233f

Biodegradability of swine effluents II. Kinetics of pollutants removal

“…Using the effluents whose origin and characterization had been presented elsewhere [14], analyses To rationalize the design criteria of reactors, a study of the biodegradation of these effluents in batch reactors was made, and models of the results were established. One of the subjects studied was the removal of organic carbonaceous pollutants present in the medium.…”

“…-5 --2 4 6 8 I0 12 14 we obtain the following equations to model the removal of organic carbonaceous pollutants ( Fig. 3 A and B).…”

“…The biodegradability and biodegradation kinetics of swine breeding effluents are important aspects of the treatability of these hazardous waste waters. In a previous paper we have already discussed the oxygen consumption during the biological depuwtion and the interference of some inhibitory substances in the process [14]. Continuing the analysis of positive and negative effects of dilution, in this context, we shall discuss some aspects of the kinetics of the bioremoval of pollutants during biodegradation in this paper.…”