Flow-adjustable sewage treatment tank

The utility model provides a sewage treatment tank capable of adjusting flow, which is characterized in that the lower part of a purification tank is provided with a water outlet, the upper part of the purification tank is provided with a water outlet pipe, the lower part of the purification tank is provided with a water inlet, and two ends of the water pipe are fixedly connected into the water outlet and the water inlet respectively; the plurality of main reaction zones are mutually non-interfering, each main reaction zone comprises an anoxic zone, an aerobic zone and a settling zone, the anoxic zone, the aerobic zone and the settling zone are sequentially connected in series through pipelines, the water inlet pipe is communicated to the anoxic zone, and the water outlet is communicated to the settling zone. According to the sewage treatment tank capable of adjusting the flow and the treatment equipment, the plurality of parallel main reaction areas are arranged, so that the defect that the traditional sewag