NOVELTY - A separation unit (40) separates packaged foodstuffs into package and foodstuffs, and a crushing unit (60) crushes a portion of foodstuffs obtained from the separation unit. A decomposition-treatment unit (10) which decomposes the foodstuffs by microorganisms, to produce liquid fertilizer, receives foodstuffs which are discharged automatically from the separation unit and crushing unit, respectively.    USE - The apparatus is useful for decomposing waste foodstuffs such as perishable food, processed food, vegetables, liquid foodstuffs such as soup, and boiled rice, noodles, using microbes, to produce liquid fertilizer.    ADVANTAGE - Since the foodstuffs with a small area per unit volume, such as vegetables, are finely crushed by the crushing unit, and since the foodstuffs with a large area per unit volume, such as soup, are supplied as such, into the decomposition unit, the foodstuffs are efficiently decomposed by the microbes. Enables efficiently, rapidly and automatically processing the waste foodstuffs, without human intervention, as the foodstuffs are automatically discharged to the decomposition unit.    DETAILED DESCRIPTION - The separation unit has a separation tank with packaged-foodstuffs inlet which is closed by a cover, package discharge-port and foodstuffs discharge-ports. A guide guides the foodstuffs ejected from the discharge ports, to the treatment unit. A rotary shaft is installed at the central axis of the tank. A primary set of rectangular-plate shaped blades are installed at the periphery of the rotary shaft. The longitudinal-direction portion of blades, is inclined with respect to axis of the shaft. A secondary set of blades with width-direction portion which is fixed to the shaft, and/or corresponding primary set of blades, intersects with the primary set of blades. A drive units rotates the shaft. The package discharge-port is formed at the extension direction of the axis of the shaft. An injection unit injects water or deodorizer to the tank, from an opening provided near the packaged-foodstuff inlet. The crushing unit has a cylindrical crushing tank with upper opening opened/closed by a cover, and through which foodstuff is received, and a lower crushed-foodstuffs discharge port. A guide guides the crushed foodstuffs to the treatment unit. The crushing tank has a movable blade fixed to a central rotary shaft driven by a drive unit. A holding board holds a fixed blade which cooperates with the movable blade, to crush the foodstuffs. A conveying unit coveys the crushed foodstuffs to the discharge port. Water/deodorizer is injected into the tank, from an opening provided near the upper opening of the crushing tank. The decomposition unit has several microbial beds and a temperature controller to control the temperature in the decomposition tank. Many main and sub stirring blades (18,20) are installed at preset intervals, at the periphery of a central rotary shaft of the decomposition tank, along axial direction, in a spiral shape. Stirring surface of the blades, is inclined to the axis of the shaft. Adjacent blades have mutually-opposite stirring surfaces. A cover opens/closes the foodstuffs inlet of the decomposition tank into which water/deodorizer is injected.    DESCRIPTION OF DRAWING(S) - The figure shows a right side sectional-view of the foodstuff decomposition apparatus.    Decomposition-treatment unit (10)    Main and sub stirring blades (18,20)    Separation unit (40)    Crushing unit (60)