Tratamiento de lixiviados del relleno sanitario La cortada municipio de Pamplona mediante contactores biológicos rotatorios.

Abstract

Rotary Biological Contactors (CBR) are fixed-mass aerobic processes for wastewater treatment, consisting of a series of disks that rotate around a horizontal axis, submerged between 40-45% of their area in water to be treated Inside a container, according to Romero. R, 2008, the organic surface load range at which they are operated is between 12 g BOD / m2 day - 40 g BOD / m2 day. The unit where the research is carried out is laboratory scale and has 5 stages each containing 12 discs, 9 discs, 8 discs, 8 discs and 8 discs respectively for a total of 45 discs, which rotate at a speed of 6 RPM, In addition the contactor has a settler at the beginning and another at the end of the unit; a system that achieves up to 80% of efficiency in terms of BOD removal. This research is oriented to the operation of a CBR unit at ambient temperature conditions, to characterize the biofilm generated in the unit and to determine efficiency levels. At the experimental level, the laboratory scale unit is dimensioned, constructed, inoculated, started, operated and fed with a substrate characterized by applying to the CBR up to three different surface organic charges applied at room temperature until stable conditions are reached at each stage, The stages in terms of surface organic load provides the highest efficiency, resulting in Surface Organic Load No 2 (20 g BOD / m2 day) as the best assimilated, because it reported the highest efficiency of 71% in terms of COD.