NOVELTY - The wet microorganism circulation organic-refuse processing apparatus has treatment tank (5) equipped with stirring blade (3), water sprinkling unit to sprinkle water in treatment tank, decomposition water tank (6) arranged at the downward direction of the treatment tank, circulation unit and backwashing type filter.    USE - The apparatus is useful for wet microorganisms processing of organic refuse (claimed) such as leftover food and business used garbage disposal in company and school.    ADVANTAGE - The wet microorganism circulation organic-refuse processing apparatus is compact, and effectively and economically reduces the amount of undecomposed residue flowing out of the apparatus and environmental impact. Need of separate purification tank is inhibited.    DETAILED DESCRIPTION - The wet microorganism circulation organic-refuse processing apparatus has treatment tank equipped with stirring blade, water sprinkling unit to sprinkle water in treatment tank, decomposition water tank arranged at the downward direction of the treatment tank, circulation unit and backwashing type filter. Organic refuse is thrown into the treatment tank and stirred with microorganisms. The undecomposed-residue-containing decomposition water which flows from the treatment tank is stored in the decomposition water tank. A portion of undecomposed-residue-containing decomposition liquid of the decomposition water tank is circulated to treatment tank by the circulation unit. The undecomposed-residue-containing decomposition water sent from the decomposition water tank is filtered and the undecomposed residue and microorganisms are separated on solid basis. The obtained filtrate water is sent out to filtrate waste water line. The backwashing water for removing the solid content separated from the decomposition water during separation and circulating to treatment tank, is supplied during backwashing.    DESCRIPTION OF DRAWING(S) - The figure shows the wet microorganisms circulation organic refuse processing apparatus. (Drawing includes non-English language text).    Stirring blade (3)    Treatment tank (5)    Decomposition water tank (6)    Water spray bar (8)    Circulation line (12)