This device comprises a container including a gathering-screening network at one upper area forming chambers separated by strainer and a drain for contaminated fluid at the other area and connecting to a driving water pump, a jet pump forming a nozzle in front and a diffuser inside being tapered like channel, the driving water pump and the nozzle are communicating through a driving water pipe, a suction pipe which is installed between the nozzle and the diffuser, and a discharge pipe which is connected at the other side of the jet pump.
