Water curtain foam blocking device for aeration tank

The utility model relates to an aeration tank water curtain foam blocking device which comprises an aeration tank, a plurality of drainage grooves are arranged at the top of an overflow wall of the aeration tank, drainage of the drainage grooves converges into a drainage tank, and a water outlet end of the drainage tank is connected with an inlet of a drainage tunnel; a water bearing flow guide platform used for forming a water curtain to prevent foam from entering the drainage tunnel from the drainage pool is arranged above the water outlet end of the drainage pool, and the water bearing flow guide platform comprises a horizontally-arranged water bearing plate and a flow guide mechanism installed at the water outlet end of the water bearing plate. The water inlet end of the water bearing plate is communicated with a drainage groove above the water outlet end of the drainage pool, a water baffle is installed on the side opposite to the water inlet end of the water bearing plate, and the water flow direction o