Ultrafiltration biofilm sewage treatment plant

The utility model relates to the field of sewage treatment, in particular to an ultrafiltration biofilm sewage treatment plant. The discharge volume of sewage treatment is large, the cost is low, the plant can be repeatedly cleaned, the service lift is long, the gas productivity is high, the capacity to degrade chemical oxygen demand (COD) is high, and the energy consumption is low. An opening at one end of a main pipeline of a bubbling pipe is horizontally formed in the bottom of an aerobe reaction tank, and extends out of the aerobe reaction tank to be communicated with an air blower; a plurality of micropores with the pore diameter of 0.2 to 200 micron are formed in the walls of a plurality of micropore aerator pipes; the plurality of micropore aerator pipes are communicated with the main pipeline of the bubbling pipe; a water absorption main pipeline is a hollow pipeline of which one end is an opening, and horizontally arranged in the aerobe reaction tank; the opening end of the water absorption main pipeline extends out of the aerobe reaction tank and is communicated with a water suction pump; a plurality of micropores with the pore diameter of 0.2 to 200 micron are formed in the walls of a plurality of hollow micropore ultrafiltration membrane filter pipes; and an opening ends of the hollow micropore ultrafiltration membrane filter pipes are communicated with the water absorption main pipeline.