The invention relates to the technical field of
sewage treatment, and discloses a jet device for
sewage treatment, the jet device comprises a jet device body, a water inlet
pipe, a water outlet and an air inlet
pipe, a suction chamber is arranged at the left end in the jet device body, and the right end of the suction chamber is connected with a
throat pipe; the water outlet is connected to the right end of the
throat pipe in a flaring mode, a water outlet
flange plate is fixedly arranged at the outer end of the water outlet, and the air inlet pipe is fixedly arranged at the upper end of the side of the jet device body. The water inlet pipe is installed at the left end of the jet device body, a
necking-down
nozzle is arranged at the right end of the water inlet pipe and stretches into the position, opposite to the
throat pipe, inside the suction chamber, and a liquid inlet
flange plate is fixedly arranged at the outer end of the water inlet pipe. According to the jet device,
sewage and gas are efficiently mixed in the jet device, the mixed sewage can be sprayed out at
high pressure through the throat pipe and the flared water outlet, and higher treatment efficiency and
effluent quality are shown in the
sewage treatment process.