Diseño de un sistema de tratamiento de lodos residuales para el Gobierno Autónomo Desentralizado Municipal del cantón Colta.

Abstract

The objective of the present work was to perform the desing of residual sludges’ harnessing for the Autonomous Decentralized Government of Colta Canton, through a composting system. To this, it was done a residual sludge’ previous diagnostic, consequently, the work was divided in several stages like reception and storage of raw material, crushing of organiic wastes and supporting material, mixing and sludges’ homogenization with raw material, decomposition stage, maturity stage, post- treatment, compost storage, and finally complementary operations. During the process it was kept three control variables, temperature, pH, and moisture. After 90 days a class B compost was obtained according to the Chiliaan Standard NCH2882.C2003. Among the most remarkable results are fecal coliforms absence and salmonella absence in 25 mg, Total Nitrogen= 0,93%, Anomical Nitrogen=51,9 mg/L and 25% of organic matter. Following this sstudy it was proved that sludges have a great bacterial load able to descompose organic matter, less time than a compost system. It was evaluated the physico-chemical and microbiological characteristic of compost in compliace with the Chilean Standard NC8822003. It recommeded to use accessible carbon sources such as organic waste from markets in order to minimize pollution, recycle and economize resources.