NOVELTY - Organic waste water (OW) processing involves mixing (a) sludge (S) containing endospore forming bacteria (EB) and/or EB with OW, (b) OW with (S) containing EB, or (c) OW with EB, and then carrying out germination of spores of bacteria and converting it to vegetative cell, and supplying mixed liquid sample into aerator for aerobic treatment.    USE - For processing organic waste water such as sewage.    ADVANTAGE - The amount of generation of sludge generated is reduced effectively by performing biological treatment under aerobic conditions. The processing of the organic waste water is simple and economical. Flocking settling property of activated sludge is improved, and the operativity of activated sludge processing facility is improved.    DETAILED DESCRIPTION - Organic waste water (OW) processing involves mixing (a) sludge (S) containing endospore forming bacteria (EB) and/or EB with OW, (b) OW with (S) containing EB, or (c) OW with EB, and then carrying out germination of spores of bacteria and converting it to vegetative cell, and supplying mixed liquid sample into aerator to carry out aerobic treatment of OW. The processed liquid is separated into (S) and treated water in a filter, and the separated (S) containing EB is recycled to the aerator. An INDEPENDENT CLAIM is also included for organic waste water processing apparatus. The apparatus comprises an aerator which carries out activated sludge treatment of OW, a precipitate tank (4) which separates processed liquid after treatment by aerator (3) into treated water and sludge. A piping (6) is provided to supply mixed liquid sample containing vegetative cell of EB formed by germination of spores in spore germination tank (2), for mixing OW and (S) containing EB in a aerator. Another piping (5) supplies sludge separated by precipitate tank to spore germination tank and then to aerator.    DESCRIPTION OF DRAWING(S) - The figure shows the organic waste water processing apparatus. (Drawing includes non-English language text).    Spore germination tank (2)    Aerator (3)    Precipitate tank (4)    Sludge return piping (5)    Mixed liquor supply piping (6)    Spore germination agent supply piping (8)