NOVELTY - A middle and late garbage leachate treatment is processed by collecting generated middle and late garbage leachate in regulating tank (1), and transferring leachate to integrated denitrification reactor (3) through set water pump (2) at bottom of regulating tank in which denitrification reactor is composed of nitrification area and denitrifying area, hydrophilic polyurethane filler is installed in nitrification area, and slow release carbon source type high molecular material is installed in denitrifying area, and nitrification area aerator is integrated in denitrification reactor.    USE - Middle and late garbage leachate treatment process (claimed).    ADVANTAGE - Treatment process is environment-friendly, effectively reduces water chroma and organic matter, realizes effective nitrification and denitrification reflux, saves adding acid and alkali, saves device reflux, medicament preparation, and electricity consumption, and improves nitrogen removal efficiency, and discharged solution meets national discharge standard.    DETAILED DESCRIPTION - A middle and late garbage leachate treatment is processed by collecting generated middle and late garbage leachate in regulating tank (1), transferring leachate to integrated denitrification reactor (3) through set water pump (2) at bottom of regulating tank in which denitrification reactor is composed of nitrification area and denitrifying area, hydrophilic polyurethane filler is installed in nitrification area, and slow release carbon source type high molecular material is installed in denitrifying area, and nitrification area aerator is integrated in denitrification reactor in which produced aeration lifts nitrification area water at bottom to move upwards, and waves produced at top overflows into denitrifying area to realize reflux nitrification and denitrification, transferring solution after denitrification reaction to acid precipitation reactor (4), adding sulfuric acid solution to acid precipitation reactor, regulating solution pH until acid precipitation point is reached and large amount of flocculate floats, scraping slag, removing scum, transferring produced sludge in process to landfill, transferring solution after acid precipitation reaction to integrated Fenton reactor (5) in which integrated Fenton reactor is composed of scum separation region, iron-carbon hydrogen peroxide Fenton reaction area, and reaction area, aerating solution in integrated Fenton reactor, adding hydrogen peroxide solution in which iron-carbon is produced in acid solution by micro-electrolysis reaction, strong oxidizing action is produced in Fenton reaction, and organic macromolecule is broken and degraded resulting to removal of solution chroma and solution biodegradability is improved during redox reaction, performing strong oxidation to hydroxyl free radical to remove chemical oxygen demand, transferring solution after Fenton reaction to coagulation precipitator (6), performing coagulating sedimentation process, adding sodium hydroxide and flocculating agent, flocculating, placing in sedimentation tank, performing solid-liquid separation, treating solution in activated sludge reactor (7) after coagulating sedimentation process, aerating solution in which sludge-shaped floc is formed due to aerobic microorganism propagation, decomposing organic matter in wastewater using microorganism, removing organic matter in solution through action of aerobic microorganism to reduce chemical oxygen amount value and meet requirement of emission standard, transferring sludge produced in process to landfill, transferring solution after activated sludge treatment to filter tank (8), filtering to reduce suspended substance in sewage, and meet suspended substance discharge standard, transferring filtered clean water to disinfection tank (9), treating solution with chlorine dioxide solution to kill Escherichia coli and reduce chemical oxygen demand, and sterilizing to meet requirement of solution emission discharge standard for municipal sewage sewers.    DESCRIPTION OF DRAWING(S) - The drawing shows process flow diagram of middle and late garbage leachate treatment process. (Drawing includes non-English language text).    Regulating tank (1)    Water pump (2)    Denitrification reactor (3)    Acid precipitation reactor (4)    Fenton reactor (5)    Coagulation precipitator (6)    Activated sludge reactor (7)    Filter tank (8)    Disinfection tank (9)