Sewage treatment method based on MUASB anaerobic reactor

The invention discloses a sewage treatment method based on an MUASB anaerobic reactor. In the invention, the main body of the equipment is A2/O-MBBR-N (anaerobic zone, anoxic zone, aerobic zone and efficient denitrification zone), and is deep improvement and optimization of the A2/O-MBBR process. Domestic sewage is collected by a collecting pipe network and discharged into a sewage grating channel, coarse and fine gratings are mounted in the grating channel to remove large-particle impurities, the sewage flows into an adjusting tank automatically, and the sewage is homogenized in the adjustingtank. After the water quality of the sewage is fully regulated and stabilized in the adjusting tank, the sewage is lifted into integrated sewage purification equipment dominated by an A2/O-MBBR-N process through a lifting pump, decomposition treatment of the sewage is carried out, and the effluent removal rate is high. A traditional UASB anaerobic reactor is improved, the UASB anaerobic reactor is regularly partitioned i