Tratamiento biologico de aguas residuales de matadero. caso: frigorifico la frontera ltda., villa del rosario, norte de Santander

The achieved investigation characterized and quantified the residual water spilt by the The ”FRIGORIFICO LA FRONTERA Ltda. ” of the municipality of Villa del Rosario Norte de Santander ( Colombia ).,it evaluated and operated a system of Biological treatment to industrial scale with the physical available infrastructure in the slaughterhouse, with the purpose of evaluating the technical feasibility in order to design a plant to real scale.The greatest production of residual water in the slaughterhouse during the time of research in take place in May with a wealth of 3,93 US and in December with a wealth of 3,37 L/s, according to the period of highest number of killed animals. The smallest production of residual water was registered in August with a wealth 2,49 L/s and in March with a wealth of 2,6l L/s. The COD of residual water was situed between 14150 and 16900 mg/l, and the BOD changed between 6950 and 7980 mg/l. In the construction of activate sludge reactors, circular tanks on staínless steel were adopted with a capacity of 8 m3. Each reactor was inoculated of different form: reactor 1 with one inoculated activated from rumen of the primary sedimentador, the reactor 2 with one inoculated activated from the rumen retained by the sieves and the reactor 3 with a commercial inóculo. The removal mediated in DOO and DBO was: 78.12 % in DOO and 85.75 % in DBO for the reactor 1, 78.65 % in DOO and 72.12 DBO for the reactor 2 and 64.92 % in DOO and 56.44 %en DBO for the reactor 3. During the operation of the reactors present microorganisms isolated and identified in the active mud of the reactor l that was the one that presented better efficiencies and the presence of protozoa ns was identified in every reactor.Key words: Active muds, lt Waters down rumen, blood Waters down, DOO, DBO. La investigación realizada caracterizó y cuantificó el agua residual vertida por el Frigorífico ”La Frontera Ltda.” del municipio de Villa del Rosario N.S. y evaluó y operó un sistema de tratamiento Biológico a escala industrial con la infraestructura física disponible en el matadero, con el obieto de evaluar la factibilidad técnica para diseñar una planta a escala real.La mayor producción de agua residual en el matadero durante el tiempo de estudio, se presentó en los meses de mayo con un caudal de 3.93 l/s y diciembre con un caudal de 3.37 l/s, correspondiendo con las épocas de mayor sacrifico de reses. La menor producción de agua residual se registró en los meses de agosto con