Abstract

QUINCHIA, Adriana María  and  CARMONA, Dora María. FACTIBILIDAD DE DISPOSICIÓN DE LOS BIOSÓLIDOS GENERADOS EN UNA PLANTA DE TRATAMIENTO DE AGUAS RESIDUALES COMBINADA. Rev.EIA.Esc.Ing.Antioq [online]. 2004, n.2, pp.89-108. ISSN 1794-1237.

By means of two pilot tests, Antioquia School of Engineering and Pontifical Bolivarian University, with the support of Public Service Enterprises of Medellín, decided to determine the feasibility for disposition of biosolids originating from the residual water treatment plant San Fernando considering them as potential rehabilitators for degraded soils and composting materials. The tests made in the research included the physicochemical and microbiological characterization of the biosolid, which allowed to establish that the matrial is not dangerous under criteria of corrosivity, reactivity, explosivity, toxicity, and inflammability; the identification of contributions of substances to environment by the application of biosolids in degraded soils and the establishment of the most recommended rates of direct application for the rehabilitation of degraded areas in the tropic, in places without cultures or cattle activities. Similarly, it was determined the potential of the biosolid as susceptible material for composting, the evaluation of the process and the most recommended materials, having as result an excellent organic quality material which provides with nutrients. In spite of that, it is due to clarify that the material presents pathogenic organisms and a high chromium load which must consider at the time of using directly this material; additionaly, for the case of compost, it is exceeded the chromium load accepted by the Colombian regulation.

Keywords : Biosolids; direct disposal of biosolids; solids composting.

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