A sewage purification vehicle is a type of vehicle specifically designed to treat septic tanks and other wastewater containing flocculent waste. The suction and purification vehicle consists of a car chassis, a generator set, an electronic control system, a sewage separation system, a dosing system, a screw dewatering system, a high-pressure cleaning system, etc. It is mainly used for rapid and harmless treatment of septic tanks, and can also effectively treat other wastewater containing flocculent pollutants. The vehicle can be equipped with a high-pressure pump for pipeline dredging.