| 摘要 |
An aeration tank used in a method of treating effluent includes a pipe for transporting the effluent from the source to the tank bottom and a discharge duct having a siphon effect for tapping off an overflow from the tank as more effluent is added from the source. An array of air diffusion members is located in the center of the tank. Above each of the air diffusion members is provided a collector guide surface which collects bubbles as they get too large and channels them to outwardly from the center into a honeycomb filter medium formed in part annular members around the center. The filter medium receives the air and directs it back into the center around the guide surface to act as a growth medium for a biomass of bacteria.
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