Energy-saving, consumption-reducing and low-carbon sewage biochemical treatment process

The invention relates to the field of sewage treatment, and particularly discloses an energy-saving, consumption-reducing and low-carbon sewage biochemical treatment process. The invention relates to an energy-saving, consumption-reducing and low-carbon sewage biochemical treatment process which comprises the following specific steps: sequentially treating sewage in an anaerobic zone, a main aerobic zone, an oxygen elimination zone, a main anoxic zone, a rear aerobic zone and a secondary sedimentation tank to form effluent and sludge; before anaerobic treatment, 20-30% of the sewage is subjected to pre-hypoxia treatment, pre-hypoxia treatment is formed, pre-hypoxia effluent is conveyed to an anaerobic zone for treatment, anaerobic zone effluent is formed, 10-20% of the anaerobic zone effluent is conveyed to an oxygen elimination zone for treatment, and 80-90% of the anaerobic zone effluent is conveyed to a main aerobic zone for treatment. The sewage biochemical treatment process used in the invention has good