WQ non-clog submersible sewage pump/drainage pump. Impeller, designed with hydraulic model and made by precision casting, has the advantages of energy-saving, anti-winding and non-clogging, etc. At the same time, this sewage pump has a unique effect in the carriage of solid particles and long fibers garbage. Single or dual impeller structure ensures the sewage pump has the higher efficiency when it has bigger flow. So this kind of sewage pump is an ideal drainage pumps for industries and cities.