(JP8259364-A)      Fermentation tank (1) comprises a top outlet (3) above the cylindrical tank. An upper radially extending rotatable support means carries multiple vertical agitator shafts extending to the tank bottom each with multiple blades rotatable about a vertical shaft axis. A gas intake means (not shown) feeds air into the tank below the agitator blades but above a transfer opening in the tank base into a maturation tank (4) below. A deodorising filter is fitted into the tank top below the outlet means (3).    USE -   The tank can be used to ferment sewage sludge and other waste materials to yield compost.    ADVANTAGE -   The small footprint tank ferments efficiently without odours at an opt. temp. without external heating and produces restricted amts. of liq. effluent when fed with a range of organic waste materials.    (TW283070-A)      A multi-story and multi-purpose fermentation device, the characteristics including: at least one fermentation tank having a roughly cylindrical shell; a supporting means extending outwardly from the center of the tank, capable of revolving around the center of the tank; a stirring device composed of a plurality of stirring blades, which are easily attachable to and detachable from the supporting means; an air inhale device located above the bottom surface of the tank and below the stirring means; an opening for conveyance, capable of being shut easily, installed above the bottom surface of the tank and below the stirring means; a filter device installed above the top story of the tank; and a mature fermentation tank located at the bottom story of the fermentation tank and leading to it through the opening for conveyance.    (US5688686-A)      Fermentation tank (1) comprises a top outlet (3) above the cylindrical tank. An upper radially extending rotatable support means carries multiple vertical agitator shafts extending to the tank bottom each with multiple blades rotatable about a vertical shaft axis. A gas intake means (not shown) feeds air into the tank below the agitator blades but above a transfer opening in the tank base into a maturation tank (4) below. A deodorising filter is fitted into the tank top below the outlet means (3).    USE -   The tank can be used to ferment sewage sludge and other waste materials to yield compost.    ADVANTAGE -   The small footprint tank ferments efficiently without odours at an opt. temp. without external heating and produces restricted amts. of liq. effluent when fed with a range of organic waste materials.    (JP2771127-B2)      Fermentation tank (1) comprises a top outlet (3) above the cylindrical tank. An upper radially extending rotatable support means carries multiple vertical agitator shafts extending to the tank bottom each with multiple blades rotatable about a vertical shaft axis. A gas intake means (not shown) feeds air into the tank below the agitator blades but above a transfer opening in the tank base into a maturation tank (4) below. A deodorising filter is fitted into the tank top below the outlet means (3).    USE -   The tank can be used to ferment sewage sludge and other waste materials to yield compost.    ADVANTAGE -   The small footprint tank ferments efficiently without odours at an opt. temp. without external heating and produces restricted amts. of liq. effluent when fed with a range of organic waste materials.    (GB2299075-B)      Fermentation tank (1) comprises a top outlet (3) above the cylindrical tank. An upper radially extending rotatable support means carries multiple vertical agitator shafts extending to the tank bottom each with multiple blades rotatable about a vertical shaft axis. A gas intake means (not shown) feeds air into the tank below the agitator blades but above a transfer opening in the tank base into a maturation tank (4) below. A deodorising filter is fitted into the tank top below the outlet means (3).    USE -   The tank can be used to ferment sewage sludge and other waste materials to yield compost.    ADVANTAGE -   The small footprint tank ferments efficiently without odours at an opt. temp. without external heating and produces restricted amts. of liq. effluent when fed with a range of organic waste materials.