NOVELTY - A system for bio-stabilization process of the organic fraction of a static waste pile comprises impermeable base (1) for supporting the pile (2); aeration system for controlled blow-in of air; breathable impermeable cover (3) of the pile; and sensors (11, 12, 13, 14) for controlling the process conditions.    USE - As a system for the bio-stabilization of the organic fraction of a static waste pile (claimed); and for processing wastes that have minimum organic components such as solid urban waste, sludge, algae, agroindustrial residues, and stable manure.    ADVANTAGE - The system performs bio-stabilization of wet components with excellent control of the emission of smells into the external environment and of bacteria and fungi hypha, and reduces the production of percolate. The system via simple, inexpensive and ecologically acceptable process provides correct treatment of increasing quantities of biodegradable wastes. The system allows implementation of bio-stabilization process on industrial scale. The system permits treatment of large quantities of solid urban wastes with considerable advantages over the current technologies, as the processing cost per ton is lower. The system does not require turning or biofilter. The breathable impermeable cover having a water vapor transmission factor (MTVR) of greater than or equal to5000 g/m2 in 24 hours retains unpleasant smells, germs and bacteria thereby shortening the process time. The air-blown static pile system with breathable impermeable cover provides improved cost/yield ratio since in addition to the reduced treatment times, use of breathable membrane avoids the use of costly biofilters and therefore permits better control of the dispersion of the unpleasant smell in the atmosphere. The system and process achieves the optimal ACT (Active Composting Time) parameters after a treatment time of 20 - 25 days per pile without turning the material. The automatic system avoids costly analysis on the resiprometric index during the process to check its progress.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a process (P1) for bio-stabilization of the organic component of a static waste pile involving: arranging the pile on a impermeable base; covering the pile with a breathable impermeable sheet; controlling blow-in of external ambient air by an aeration system; and adjusting the internal temperature of the pile to 60 - 80degreesC.    DESCRIPTION OF DRAWING(S) - The figure shows the system for bio-stabilization of the organic fraction of a static waste pile.    impermeable base (1)    pile (2)    breathable impermeable cover (3)    fan (4)    sensors (11, 12, 13, 14)    containment walls. (20)