FuturEnviro | Octubre/Noviembre October/November 2020 www.futurenviro.es 91 La alimentación de los residuos a la línea se realiza mediante un puente-grúa automático y supervisado por cámara dotado de pulpo que deposita el material sobre la tolva del abridor de bolsas instalado y posteriormente conducido mediante cinta al transportador de mezcla donde se une en línea con el estructurante. El estructurante es cargado con pala cargadora en el triturador de fracción vegetal. Desde allí se lleva al alimentador de esta fracción que lo transporta al depósito-pulmón para distribuirlo en la cinta de mezcla con la FORS. Por último, una vez mezclado la fracción FORS y el estructurante, la mezcla es dirigida a la Nave de Bioestabilización/Compostaje mediante cintas de entrega de este material a la sección del parque automático que se considere. Turning operations are carried out automatically by means of worm screws (four per trolley), which move through the biowaste following a zig-zag route. The worm screws are immersed in the material at all times, apart from when the trolley is returning to the beginning of the cycle, when they are in a horizontal, non-operational position. The grinder discharge unit follows a similar route for the purpose of progressively unloading the accumulated material onto the inclined discharge wall during the first run. Therefore, the zig-zag cycle always starts on the discharge side and moves in the direction of the loading side. The turning cycle enables: • The biowaste to flow uniformly from the loading side to the discharge side in the established time period. • Recovery of the biowaste porosity, which tends to decrease during the process due to the weight of the material itself. • Homogenisation of the treatment conditions by inverting the layers of the bed. • The return of biowaste moisture content to optimum values by adding water directly to the material as it is turned by the worm screws. • Balancing of the reduction in volume caused by the biological process in order to keep the bed level constant. • Regulated discharge of the biostabilised/composted product on the discharge conveyor through the use of a grinder/milling device. The benefits of this system are: • Shorter transformation times. • Homogeneity of treatment without the formation of anaerobic pockets. • No material stratification, which prevents dry or excessively moist zones. • Highly-automated system with low labour requirements. • Reduction in volumes required for treatment. • Option to add water to the biowaste during turning, thus ensuring optimal moisture content. • Capacity to treat large biowaste quantities. • Automatic discharge. The biostabilisation/composting process is also equipped with a forced aeration system. This system consists of a number of tubes arranged on the reactor floor fitted with diffusion systems, Complejo Medioambiental de Reciclaje (CMR) de Loeches (Madrid) | Loeches Environmental Recycling Complex (CMR) (Madrid) FuturENVIRO® FuturENVIRO® FuturENVIRO®
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