NOVELTY - A microbe culture tank (16) with overflow opening, is installed in closed-type grease trap (10) filled with waste-water. Waste-water is pumped from grease trap to tank. Aeration is carried out, and microbe is activated. Waste-water is further pumped to the tank. The culture solution is activated and supplied to grease trap from the opening. Air is then supplied to waste-water, and aeration is carried out.    USE - For processing waste-water containing fats and oils e.g. waste-water ejected from kitchens.    ADVANTAGE - The processing method immediately decomposes fats and oils present in waste-water. Spreading of odor in the grease trap is prevented by circulation of air. Waste heat of the diaphragm blower tends to rise the temperature of waste-water in the grease trap, and tends to improve the decomposition speed of the microbe. An efficient waste-water treatment is achieved.    DETAILED DESCRIPTION - A microbe culture tank (16) having an overflow opening made into an upper direction from the liquid level (30) of waste-water (13), is installed in a closed-type grease trap (10) filled with waste-water containing fats and oils. Waste-water is pumped up from the grease trap with a pumping apparatus to the microbe culture tank. Aeration is carried out, and the microbe is activated. Waste-water is further pumped up from the grease trap to the microbe culture tank. The culture solution of the microbe is activated and supplied to the grease trap from the overflow opening. Air is then supplied to the waste-water by a diaphragm blower (23), and aeration is carried out.    An INDEPENDENT CLAIM is also included for a processing apparatus having    (a) closed-type grease trap;    (b) waste-water inlet tube (29) which introduces waste-water to the grease trap;    (c) microbe culture tank;    (d) microbe supply apparatus (14) which supplies a microbe to the microbe culture tank;    (e) waste-water pumping apparatus which pumps waste-water from the grease trap to the microbe supply tank;    (f) aeration apparatus which carries out the aeration of waste-water of the microbe culture tank;    (g) diaphragm blower for carrying out the aeration of waste-water of the grease trap;    (h) inlet pipe for sucking air to the diaphragm blower;    (i) air feed pipe (22) connected to the diaphragm blower and supplying air to the waste-water;    (j) diffusion tube (25) which is branched at the end of the air feed pipe;    (k) connected vent pipe (24);    (l) water pipe connected with the waste-water pumping apparatus via a solenoid valve (21); and    (m) discharge pipe (11) which ejects the treated-water processed in the grease trap.    DESCRIPTION OF DRAWING(S) - The figure shows the explanatory drawing of waste-water treatment process. (Drawing includes non-English language text).    grease trap (10)    discharge pipe (11)    waste-water (13)    microbe supply apparatus (14)    microbe culture tank (16)    solenoid valve (21)    air feed pipe (22)    diaphragm blower (23)    vent pipe (24)    diffusion tube (25)    inlet tube (29)    liquid level (30)