NOVELTY - A modified anaerobic baffle sewage biological treatment equipment comprises a cylinder shape. It is divided into 2 rings. The inside ring is the acidification reactor (4) and the outside ring is the methane reactor (7). A top part of the inside ring opens lower than the top part of the outside ring. Away from the top part of the reactor is provided with a water inlet and a water outlet (9). The top part is provided with an exhaust pipe. A center of the inside ring has a center sleeve with top part linked to the water inlet set on the outside ring through the pipeline.    USE - Modified anaerobic baffle equipment for sewage biological treatment (claimed).    ADVANTAGE - The equipment realizes separation of acid production phase and methane production phase, improves sludge concentration in the equipment, and further improves sewage treatment effect.    DETAILED DESCRIPTION - Modified anaerobic baffle sewage biological treatment equipment comprises a cylinder shape. It is divided into 2 rings. The inside ring is the acidification reactor (4) and the outside ring is the methane reactor (7). A top part of the inside ring opens lower than the top part of the outside ring. Away from the top part of the reactor is provided with a water inlet and a water outlet (9). The top part is provided with an exhaust pipe. A center of the inside ring has a center sleeve with top part linked to the water inlet set on the outside ring through the pipeline. A lowest part of the center sleeve is linked to a bottom part of the acidification reactor through the pipeline. A bottom part of the acidification reactor is linked to the methane reactor through the pipeline. The interiors of the acidification reactor and the methane reactor are divided by a clapboard (719), each lattice chamber being provided with a baffle (411). A bottom part of the baffle is linked downward and is 45 degrees from the horizontal direction. Each lattice chamber is divided into an upward flow partition and a downward flow partition by the baffle. The upward flow partitions and the downward flow partitions of the acidification reactor and the methane reactor are arranged alternately. Away from the bottom parts of the acidification reactor and the methane reactor is an inclined tube zone with dip angle of 70 degrees with the horizontal surface. A distribution area of the inclined tube in the inclined tube zone is 60% of area of the upward flow partition. An inclined tube density of the inside ring acidification reactor is 82/m2, and the inclined tube density of the outside ring methane reactor is 211/m2. The inclined tubes are cellular hexagon plastics tubes. An INDEPENDENT CLAIM is included for sewage treatment using the modified anaerobic baffle sewage biological treatment equipment.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of a modified anaerobic baffle.    Acidification reactor (4)    Methane reactor (7)    Water outlet (9)    Baffle (411)    Clapboard (719)