NOVELTY - A methane lifting type strengthening anaerobic reactor comprises gas and liquid separator; reactor body i.e. cylindrical pot divided into upper and lower parts; first and second anaerobic reaction rooms; water inlet provided at the bottom of first anaerobic reaction room; gas collecting cover provided on upper part of first anaerobic reaction room; methane lifting pipe mounted on upper part of gas collecting cover; methane discharging pipe provided on top of gas and liquid separator; gas collecting pipe; and water discharging channel provided on upper part of settling area.    USE - A methane lifting type strengthening anaerobic reactor used for recycling wastewater (claimed).    ADVANTAGE - The reactor has high stability and high load; strongly treats wastewater with high concentration of poisonous material to produce methane; improves mass transfer conditions between microorganism and ground substance; increases reaction rate; and improves efficiency of sewage treatment. The wastewater is post treated in second upper anaerobic reactor such that the discharged water satisfies the desired treatment requirement.    DETAILED DESCRIPTION - A methane lifting type strengthening anaerobic reactor comprises:    (1) gas and liquid separator provided on top of reactor;    (2) reactor body i.e. cylindrical pot divided into upper and lower parts;    (3) first anaerobic reaction room on lower part and second anaerobic reaction room on upper part;    (4) water inlet provided at the bottom of first anaerobic reaction room;    (5) gas collecting cover provided on upper part of first anaerobic reaction room;    (6) methane lifting pipe mounted on upper part of gas collecting cover, and connected with gas and liquid separator from the side;    (7) methane discharging pipe provided on top of gas and liquid separator;    (8) gas collecting pipe installed on upper part of gas collecting cover and connected with gas and liquid separator from the side; and    (9) water discharging channel provided on upper part of settling area of second anaerobic reaction room.    The bottom of gas and liquid separator is connected with back-flow pipe. The gas collecting cover is installed on second anaerobic reaction room. The water passes through water discharging channel and flows out from water discharging pipe. An INDEPENDENT CLAIM is included for application of methane lifting type strengthening anaerobic reactor.