NOVELTY - An activated sludge processing method of wastewater involves performing sludge disposal which makes activated sludge act on wastewater and performs denitrification of nitrate nitrogen and nitrification of ammonia nitrogen, carrying out first separation operation which separates activated sludge which settled promptly after drying from to-be-processed wastewater before dissolved oxygen of to-be-processed wastewater dries, performing recirculation operation which adds new wastewater and activated sludge after preliminary process to to-be-processed wastewater remainder after sludge disposal.    USE - An activated sludge processing method of wastewater.    ADVANTAGE - The method removes nitrogen and phosphorus efficiently, prevents reproduction of filament-formed bacteria, and prevents re-discharge of phosphorus to wastewater.    DETAILED DESCRIPTION - An activated sludge processing method of wastewater involves:    (A) performing sludge disposal which makes activated sludge act on wastewater and performs denitrification of nitrate nitrogen and nitrification of ammonia nitrogen;    (B) making activated sludge which fractionates to-be-processed wastewater after sludge disposal and is contained in to-be-processed wastewater to settle;    (C) carrying out first separation operation which separates activated sludge which settled promptly after drying from to-be-processed wastewater before dissolved oxygen of to-be-processed wastewater dries;    (D) carrying out second separation operation which separates activated sludge which remains for to-be-processed wastewater separated by first separation operation from to-be-processed wastewater on aerobic conditions;    (E) performing preliminary process which supplies new wastewater to activated sludge separated by first separation processing and is set on anaerobic conditions;    (F) performing recirculation operation which adds new wastewater and activated sludge after preliminary process to to-be-processed wastewater remainder after sludge disposal; and    (G) performing sludge disposal, first and second separation operation, preliminary process and recirculation operation repeatedly.    An INDEPENDENT CLAIM is included for an activated sludge process equipment of the wastewater.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic block diagram of the activated sludge process equipment of wastewater.    Processing tank (10)    First separation tank (30)    Preliminary process tank (40)    Second separation tank (60)    Activated sludge (S)