NOVELTY - A microorganism culturing and feeding machine has a culture tank in which microorganisms are stored, an air inlet to supply oxygen into the culture tank through the air inlet, an agitator for agitating nutrients injected into the culture tank, a heating jacket which is formed on the outer peripheral surface of the culture tank, and in which heated water is stored to provide the culture tank with a temperature suitable for culturing the microorganisms, a water supply pipe, a nutrient supply unit, and a nutrient injection quantity-adjusting unit.    USE - Microorganism culturing and feeding machine is used for removing nitrogen in sewage or wastewater and reducing odor generated from sewage or wastewater.    ADVANTAGE - The microorganism culturing and feeding machine improves treatment efficiency of sewage or wastewater containing ammonia nitrogen and reduce odor resulting from nitrogen by stably culturing specific microorganisms for synthesizing ammonia nitrogen in their cells and supplying a cultured medium into sewage or wastewater treatment plant periodically.    DETAILED DESCRIPTION - A microorganism culturing and feeding machine has a culture tank in which microorganisms are stored, an air inlet to supply oxygen into the culture tank through the air inlet, an agitator for agitating nutrients injected into the culture tank, a heating jacket which is formed on the outer peripheral surface of the culture tank, and in which heated water is stored to provide the culture tank with a temperature suitable for culturing the microorganisms, a water supply pipe which is connected to a water supply pump, and supplies water required for culturing the microorganisms, a nutrient supply unit which separately supplies, into the culture tank, a nutrient source (I) as carbon of ganoderic acid (GA) synthetic media for activating the cultivation of the microorganisms and a nutrient source (II) as nitrogen of GA synthetic media, and a nutrient injection quantity-adjusting unit for properly controlling injection quantities of the nutrient sources (I,II). The microorganism is Leclercia adecarboxylata. The nutrient source (I) is dipotassium hydrogen phosphate, glucose, ferrous sulfate heptahydrate, calcium chloride dihydrate, magnesium sulfate heptahydrate and zinc chloride. The nutrient source (II) is ammonium sulfate.