sewage treatment plant for wastewater treatment with horizontally flowing waste water in the activated sludge mixture of a areation

摘要

1,179,687. Aerating liquids. A. SCHREIBER. 5 April, 1967 [9 Nov., 1966 (2)], No. 15597/67. Heading B1C. Apparatus for aerating waste water comprises an annular tank 3 having fixed diffusers 7, and movable diffusers 12 suspended from a travelling bridge 5; air bubbles issuing from the diffusers are deflected from the vertical as they rise through the water. There may also be damming members 10 carried by the bridge 5 which give a downward flow to the water increasing the contact time.