NOVELTY - The equipment has two fermenters (1A,1B) formed with stirrers (11A,11B) and heaters (31A,31B). An exhaust port selector mechanism (51) is used to selectively open the exhaust ports (3A,3B) of the two fermenters to perform the primary and secondary fermentation of an organic refuse alternately with hot air supplied from independent air supply paths (21A,21B).    USE - For performing the recycling of organic refuse into a fertilizer by fermenting the organic refuse.    ADVANTAGE - The organic refuse can be completely fermented by alternately performing the primary and secondary fermentation in two fermenters without transferring the intermediate fermented material from one fermenter to the other. The fermented material taken out from each fermenter can be immediately utilized as a fertilizer in a condition of having completely fermented.    DETAILED DESCRIPTION - Filters (41A,41B) are respectively arranged in the exhaust ports of both the fermenters. The exhaust port selector mechanism opens one exhaust port while closing the other in a slightly opened condition. A deodorizing material (71) is arranged among the exhaust path (62) of an exhauster structure which exhausts the exhaust gas from the exhaust ports of both the fermenter. A heat exchanger (81) which heats the air supplied to each fermenter with the exhaust gas, is installed in the exhaust path. A preset amount of refuse is supplied into one fermenter to which the warm air is mainly supplied and a primary fermentation is performed in a condition of having opened the exhaust port and exhausting the gas from inside one fermenter. The exhaust port of the other fermenter is opened after the primary fermentation in one fermenter and a preset amount of refuse is supplied into the other fermenter to carry out the primary fermentation in the condition of exhausting the gas from inside the other fermenter. The exhaust port is switched in the same order after the primary fermentation and the secondary fermentation of the intermediate fermented material are performed with both the fermenters in turn, while taking out the completely fermented material alternately as a fertilizer from both fermenters.    DESCRIPTION OF DRAWING(S) - The figure shows an explanatory diagram showing the outline composition of an organic refuse processing equipment.    Fermenters (1A,1B)    Exhaust ports (3A,3B)    Stirrers (11A,11B)    Air supply paths (21A,21B)    Heaters (31A,31B)    Filters (41A,41B)    Exhaust port selector mechanism (51)    Exhaust path (62)    Deodorizing material (71)    Heat exchanger (81)