NOVELTY - An upflow anaerobic sludge blanket/anoxic tank/moving bed biofilm reactor (UASB/A/MBBR) chemical treatment system comprises UASB reactor (2) connected to 3-phase separator (2-1) in upper part, A tank (3), MBBR reactor (4) with aeration device, sedimentation tank (7), settling tank (5), and chemical sedimentation tank (6) with bottom mud channel in which regulating pool (1) is connected to inlet of UASB reactor through 1st water pipe (11), UASB reactor is connected A tank inlet through 2nd water pipe (12), outlet of A tank is connected to inlet of settling tank through 3rd water pipe (13).    USE - Upflow anaerobic sludge blanket/anoxic tank/moving bed biofilm reactor chemical treatment system for high organic matter high ammonia wastewater (claimed), such as industrial wastewater.    ADVANTAGE - Treatment is energy saving, inhibits bacterial activity, recycles waste, avoids loss of sludge, increases biodegradability of water, and has increased nitration.    DETAILED DESCRIPTION - An UASB/A/MBBR chemical treatment system comprises UASB reactor connected to 3-phase separator in upper part, A tank, MBBR reactor with aeration device, sedimentation tank, settling tank, and chemical sedimentation tank with bottom mud channel in which regulating pool is connected to inlet of UASB reactor through 1st water pipe, UASB reactor is connected A tank inlet through 2nd water pipe, outlet of A tank is connected to inlet of settling tank through 3rd water pipe, outlet of settling tank is connected to inlet of chemical sedimentation tank, outlet of chemical sedimentation tank is connected to inlet of MBBR reactor through 6th water pipe (16), 3rd water pipe is connected to 4th pipe (14) which is connected to bottom inlet of MBBR reactor, outlet of MBBR reactor top inlet of sedimentation tank through the water pipe (15), where sedimentation tank is connected to outlet and outlet pipe, return pipe (17) is connected to 5th water pipe, where return pipe is connected to another inlet of A tank, settling tank is connected to 1st mud tube (21) and MBBR reactor, sedimentation tank is connected to 2nd mud tube (22) and A tank, and 2nd mud tube is connected to sludge outlet. An INDEPENDENT CLAIM is included for operation of UASB/A/MBBR chemical treatment system which involves removing suspended solid and floating debris in wastewater, introducing pretreated wastewater into regulating pool, transferring to UASB reactor, anaerobically degrading organic matter while generating biogas, transferring to MBBR reactor, refluxing with nitration liquid, discharging to sedimentation tank, mixing with activated sludge, transferring to A tank, removing nitrogen using denitrifying bacteria, flowing into MBBR reactor, growing suspended and attached microorganisms to completely remove nitrogen of organic matter, transferring to settling tank, removing mud, returning precipitated sludge in MBBR reactor, introducing supernatant to chemical sedimentation tank, mixing with magnesium chloride hexahydrate and sodium hydrogen phosphate dodecahydrate to obtain magnesium ammonium phosphate precipitate through reaction of ammonium ion, refluxing supernatant in MBBR reactor, subjecting precipitate to chemical sludge discharge, introducing to sedimentation tank, reacting for 2-3 hours to remove mud, returning part of sediment sludge to anoxic tank as activated sludge, and discharging other part.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of UASB/A/MBBR chemical treatment system.    Regulating pool (1)    UASB reactor (2)    3-phase separator (2-1)    A tank (3)    MBBR reactor (4)    Settling tank (5)    Chemical sedimentation tank (6)    Sedimentation tank (7)    1st water pipe (11)    2nd water pipe (12)    3rd water pipe (13)    4th pipe (14)    Water pipe (15)    6th water pipe (16)    Return pipe (17)    1st mud tube (21)    2nd mud tube (22)