NOVELTY - The method comprises: supplying a wastewater containing livestock wastes to an influx container and then performing first dehydration process for composting into a dehydration cake, and introducing the dehydration cake to a water storage tank; adjusting pH value of the dehydration cake by mixing the dehydration cake with alkali using a mixer until pH becomes 9-12; flowing the pH adjusted livestock wastewater to a heat exchanger via a feed pump and then heating and denitrifying; and ejecting the denitrified wastewater to a stripping tower via an upper portion of a filler.    USE - The method is useful for processing livestock wastes (claimed).    ADVANTAGE - The method is capable of effectively reducing phosphorus content and nitrogen content from the livestock wastes in a simple manner and without generating any pollution.    DETAILED DESCRIPTION - The method comprises: supplying a wastewater containing livestock wastes to an influx container and then performing first dehydration process for composting into a dehydration cake, and introducing the dehydration cake to a water storage tank; adjusting pH value of the dehydration cake by mixing the dehydration cake with alkali using a mixer until pH becomes 9-12; flowing the pH adjusted livestock wastewater to a heat exchanger via a feed pump and then heating and denitrifying; ejecting the denitrified wastewater to a stripping tower via an upper portion of a filler and then reacting in a reaction bath; supplying a carrier gas to the stripping tower via a lower portion of the filler provided with a circulating fan; heating the reacted wastewater at a temperature of 80-90 degrees C; discharging ammonia gas, via an upper portion of an absorptive tower, from the stripping tower; supplying an absorption liquid containing phosphoric acid or sulfuric acid to a liquid reservoir for maintaining the pH value to 6-8, and cooling the heated wastewater by circulating the absorption liquid via a circulation pump of the absorptive tower; stirring lime with the cooled wastewater in a reaction bath mixer; supplying the mixture to a neutralizing tank and then introducing into an adhesion bath to absorb water-soluble contaminants; injecting a polymeric coagulant into the neutralizing tank and then neutralizing in a flocculation basin to 6-8; overflowing the mixture to a waterspout and then performing second dehydration process to prepare a dehydration filtrate of the wastewater; performing first aerobic biological process on the filtrate in a first aeration tank; precipitating solid particles of the filtrate and then introducing into a second aeration tank; injecting air from a blower to the second aeration tank for performing second aerobic biological treatment; sterilizing the treated mixture in a final process tub; ejecting excess sludge generated on the influx container to a deodorization process; composting the sludge in the presence of oxygen by a rotary mixer and then aerobic fermentation at a temperature of 60-70 degrees C; supplying the fermented mixture to an aging tank via a transfer conveyor for concentrating oxygen content to 85%, carrying out pressure swing absorption process of the mixture, and adjusting moisture content of the processed mixture to 65-70%; biologically deodorizing the mixture in a culture tub provided with a deodorization tower; circulating polyphenol compound into the deodorization tower via the circulation pump; and collecting generated bad odor material from the mixture by a suction pen of the deodorization tower. The method further comprises: performing modification treatment process of the wastewater by applying high voltage of 3000-5000 V to the mixture from a regulated voltage generator and then reforming with susceptor; performing magnetization process of the mixture; adsorbing gas ejected from the deodorization tower by an absorber; and oxidizing the mixture using an oxidizing agent.