Tratamiento de lactosuero ácido en un reactor UASB a diferentes cargas constantes y puntuales
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Date
2013
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Área Metropolitana del Valle de Aburrá
Área Metropolitana del Valle de Aburrá
Abstract
Intro duction. For this research work, the acid whey produced by Oaxaca cheese industry in a UASB reactor
was used. The reactor was subjected to three constant charges and three punctual charges of the whey. The
reactor had a nominal capacity of 2.9 L with 1.9 days of hydraulic retention with an upward flow and a sludge
blanket of 40% of the reactor´s volume. Objective. Evaluate the behavior of the UASB reactor with three di-fferent charges of whey. materials and methods. Three different constant charges of whey were used (5200,
7800 and 10500 mg CDO/L each one) during 22 days, and punctual charges of 32000, 47000 and 65000 mg
DQO/L per day of whey, for each one, during 24 hours. Both the influent and the effluent were determined:
total of sugars, volatile fatty acids (VFA´s) protein, pH, methane and CDO. Results. The findings demonstrated
that in the constant charges used the removal efficiency of CDO was 26 %, and for the punctual charges was
57 %. The sugar degradation efficiency was 95% for the constant and the punctual charges. For the protein, the
removal efficiencies in the constant charges were above 27 % and for the punctual charges the efficiency was 46
%. Conclusion. The values of volatile fatty acids and methane were all within the limits for a good functioning
of the reactor. Nevertheless, the pH had acid values below the ones recommended.
Description
Keywords
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Lactosuero, Industria láctea, Digestión anaerobia