NOVELTY - The system comprises a pretreatment unit (100), an oxidation unit (200), a stabilization unit (400), a combustion unit (500) having a combustor, a deodorizing stabilization unit, a deodorizing bath, a waste water inlet duct, an inlet partition wall, an outlet partition, a circulation partition, air nozzles, and water nozzles. The pretreatment unit discharges organic waste through a hopper, inputs the organic waste on a conveyor belt to a crusher, crushes an organic waste using the crusher, and stores the crushed organic waste in a reservoir.    USE - The system is useful for producing gas such as methane gas and carbon dioxide from organic waste such as food and drink leftovers, city sewage sludge, excrement, and kitchen scraps.    ADVANTAGE - The system is capable of easily and economically producing the gas from organic waste without environmental pollution and any undesirable odor.    DETAILED DESCRIPTION - The system comprises a pretreatment unit (100), an oxidation unit (200), a stabilization unit (400), a combustion unit (500) having a combustor, a deodorizing stabilization unit, a deodorizing bath, a waste water inlet duct, an inlet partition wall, an outlet partition, a circulation partition, air nozzles, and water nozzles. The pretreatment unit discharges organic waste through a hopper, inputs the organic waste on a conveyor belt to a crusher, crushes an organic waste using the crusher, and stores the crushed organic waste in a reservoir. The oxidation unit carries the crushed organic waste into an oxidation bath using an oxidation pump and oxidizes the crushed organic waste in the oxidation bath, and carries the oxidized organic waste into a digestion bath and converts the oxidized organic waste into fluid using an anaerobic digestion. The stabilization unit divides the fluid into gas and liquid fertilizer, when the fluid is supplied into a fluid stabilizing bath. The oxidation bath has: a safety window provided in a sealed upper portion; a coupler provided in one side of an upper portion; a first pipe coupled to the coupler and connected to the oxidation pump; a second pipe penetrating through other side of the upper portion; a pit formed in a bottom of the oxidation bath; and a mixer coupled to a lower inside wall of the oxidation bath corresponding to the pit. The safety window is made of a transparent glass. The mixer includes a mixing motor and first blades coupled to the mixing motor. One side of the inorganic-material-discharging unit is seated in the pit and other side of the inorganic-material-discharging unit is exposed from above the oxidation bath. The digestion bath is formed: as a horizontal cylinder with an inlet and an outlet; a shaft coupled to a shaft motor; and an inorganic-material-discharging unit (700) provided inside the horizontal cylinder. The shaft motor is operated in response to a signal from a controller. One side of mixing bridges is coupled to the shaft, and other side of the mixing bridges is coupled to a paddle adjacent to an inner surface of the oxidation bath. The inorganic-material-discharging unit includes a screw tube, a screw shaft inserted into the screw tube, a follower sprocket wheel coupled to an upper end of the screw shaft, a drive motor having a drive sprocket wheel, a chain connecting the drive sprocket wheel and the follower sprocket wheel with each other, and a discharge hopper coupled to an outer edge of the screw tube below an upper end of the screw tube. The drive motor is coupled to an upper outer edge of the screw tube. The discharge hopper is connected to an inorganic material reservoir. The fluid-stabilizing bath is buried such that: an upper portion is exposed from a ground; circulators are disposed inside the fluid-stabilizing bath; and a gas outlet is coupled to the other side of an upper portion of the fluid-stabilizing bath. One of the circulators is disposed on the upper portion of one side of the fluid-stabilizing bath and other one of the circulators is disposed on a lower portion of the other side of the fluid-stabilizing bath. Each of the circulators includes a circulation motor and second blades coupled to the circulation motor. A fluid inlet is coupled to one side of the upper portion of the fluid-stabilizing bath, and a fluid outlet is coupled to the lower portion of the fluid-stabilizing bath. A third pipe is coupled to and extends from the gas outlet to supply methane gas to the combustor of the combustion unit. A fourth pipe extending from the fluid outlet is coupled to the deodorizing stabilization unit. An aerobic fermentation fungi and photo synthetic bacteria are supplied to the deodorizing stabilization unit. The deodorizing bath is connected to an outlet side of a stabilizer tank that has a temperature of 60-70 degrees C. The waste water inlet duct is coupled to a sealed upper portion of the deodorizing bath. The inlet partition wall having an open lower end is coupled to one end of an inside of the deodorizing bath. The outlet partition having a decanter is coupled to the other end of the inside of the deodorizing bath. The circulation partition is coupled to a space between the inlet partition and the outlet partition. The air nozzles are disposed on spaces on both sides of the circulation partition, and are connected to an air pump by an air duct. The water nozzles are disposed on an upper space, where the circulation partition is formed, and are connected to a water pump. One end of an inlet pipe is coupled to the upper space of the deodorizing bath, where the water nozzles are disposed, and the other end of the inlet pipe is coupled to an inlet side of the stabilizer tank.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a system for producing gas from organic waste.    Pretreatment unit (100)    Oxidation unit (200)    Stabilization unit (400)    Combustion unit (500)    Inorganic-material-discharging unit. (700)