NOVELTY - A membrane separation chamber (24) purifies water discharged from aerobic treatment tank (23) which performs aerobic treatment of wastewater containing crushed organic material, obtained from storage tank (22). A suction pump (55) ejects water purified by separation chamber. A sludge collection unit (25) separates water containing organic material, discharged from separation chamber, into solid and liquid.    USE - For processing organic refuse obtained from kitchen.    ADVANTAGE - Eliminates the need for a sludge-precipitation tank, as the membrane separation chamber is installed, after the aerobic treatment tank. Hence reduces the size of the processing apparatus.    DETAILED DESCRIPTION - A return pipe returns the water from which solid has been removed, from the sludge collection unit, to the storage tank. A transfer unit transfers the water containing organic material, to the sludge collection unit. When the water level in the storage tank, as detected by a main water-level sensor, reaches a preset upper position, and a preset lower position, a controller operates a pump (34) for transferring wastewater from the storage tank, to the aerobic treatment tank, and stops the pump operation, respectively. The controller operates, and stops the operation of the suction pump, when the water level in the separation chamber, as detected by a sub water-level sensor, reaches a preset upper position, and a preset lower position, respectively. The controller stops the operation of the crusher of organic waste, and that of the pump, when the detected water level in the storage tank, and in the separation chamber, exceed the respective preset upper position. The controller stops the operation of crusher, when water level of separation chamber reaches the preset upper position. The separation chamber has a filter with a ceramic filtering film. The sludge collection unit has a filter for filtering the liquid separated from the solid.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic view of the refuse processing system. (Drawing includes non-English language text).    Storage tank (22)    Aerobic treatment tank (23)    Membrane separation chamber (24)    Sludge collection unit (25)    Pump (34)    Suction pump (55)