Cinética del proceso de depuración anaerobia de alpechín previamente biotratado vía aerobia

A kinetic study has been carried out on the process of anaerobic purification of an olive mill wastewater pre-treated aerobically to eliminate the greater part of the phenolic compounds responsible for inhibition. Two anaerobic digesters were used, one with Pansil support, and the other a Reference without filling. The aim was to study the influence of the immobilization support both on the biokinetic constants and on the efficiency of the anaerobic digestion process or biomethanization of this pre-treated olive mill wastewater. In contrast to what takes place with natural olive mill wastewater, only a very small decrease in the apparent rate constants of the anaerobic process was observed on increasing load density. At the same time, no inhibition was found in the biomethanization of this aerobically pre-treated wastewater.In contrast to what takes place with natural olive mill wastewater, only a very small decrease in the apparent rate constants of the anaerobic process was observed on increasing load density. At the same time, no inhibition was found in the biomethanization of this aerobically pre-treated wastewater. Se ha efectuado un estudio cinético del proceso de depuración anaerobia de un alpechín previamente tratado vía aerobia con objeto de eliminar la mayor parte de los compuestos fenólicos responsables de su poder inhibidor. Se utilizan dos reactores anaerobios, uno con soporte Pansil y un Testigo sin relleno, para estudiar la influencia del soporte de inmovilización tanto sobre las constantes biocinéticas como sobre la eficiencia del proceso de digestión anaerobia o biometanización de este alpechín pretratado. A diferencia de lo que ocurre con el alpechín natural, se observa sólo una pequeñísima disminución de las constantes aparentes de velocidad del proceso anaerobio al aumentar la densidad de carga. Por otra parte, no se aprecian fenómenos de inhibición en el proceso de biometanización de este agua residual previamente tratada de forma aerobia