WZSC series integrated equipment is applicable to non-key water areas and areas with low emission standards. This equipment series can make sure that the tail water stably conforms to the Grade 1-B standard in Standard of Pollutants for Municipal Sewage Treatment Plant (GB18918-2002). WZSC integrated sewage treatment equipment adopts the process of A³O + mud-water separation + ultraviolet disinfection, and the equipment integrates biochemical unit, mud-water separation unit, disinfection unit, disinfectant addition unit, and automatic control unit. For this integrated equipment series, the functions of the deoxidizing zone, anaerobic zone, anoxic zone, aerobic zone, and sedimentation zone are fully specified. The sludge return system and nitrification liquid return system are reasonably designed, and the anoxic zone has denitrification fillers to reduce organic pollutants while strengthening the effect of nitrogen and phosphorus removal to ensure that the tail water stably conforms to the standard.