SISTEMA DE EVAPORACIÓN PARA REDUCIR EL VOLUMEN DE LIXIVIADOS DE UN DEPÓSITO CONTROLADO, VALORIZANDO EL BIOGÁS

Abstract

The removal of leachate is important cost in solid waste sanitary landfills. On the other hand, generated biogas from anaerobic fermentation of wastes, used to be bunt in a torch, according to rules (Directiva 1999/31/CE and Real Decreto 1481/2001). So, the biogas is not exploited. In this work, a evaporation system is presented in order to reduce the volumen of leachates from a sanitary landfill. For that, different evaporations methods have been compared. Next, the optimum system has been chosen and a economic study has been analyzed. The chosen system (direct contact evaporator in an evaporation column) consisto on a boiler, direct contact evaporator and gas-liquid exchanger. Furthermore, it is posible to take profit of biogás or apply natural gas as a power source in the case that biogás was not enought.