Diseño y Automatización de un Sistema de Aireación Forzada para el Co-compostaje de residuos hortícolas en la comunidad de Gatazo cantón Colta.

Abstract

The research aimed to design and automation of a forced aeration system for co-composting of vegetable waste Gatazo parish in the province of Chimborazo, determine types of materials used and the budget necessary for its construction. In order to study the phenomena governing the composting process, the research was based on bibliographic contributions and comparisons obtained from research on composting and its various configurations. critical process variables such as temperature, humidity and oxygen concentration was identified. This determination allowed calculations for the design and construction team. Engineering calculations set the amount of air required to remove excess moisture from the mixture of materials as well as proper distribution of air through the compost pile. The results show that the equipment consists of materials as a centrifugal fan for air injection of 0.75 hp, a piping system air distribution PVC perforated along its longitudinal section to treat approximately 2000 kg of waste . The team built provides control of process variables through automated control structure that allows you to schedule periods of operation, and also adjusts the temperature when it exceeds a maximum value by ventilation. The budget for the construction of the equipment was approximately $ 1200. Forced aeration system met the desired objectives therefore concludes that the designed equipment is suitable for the development of the composting process, achieving control of variables, reduced operating costs and residence time. It is recommended to define the quantities of waste as well as perform a pre-treatment horticultural waste to be treated.