| 摘要 |
A floating biological contactor confining aerobic bacterial growth media in a container submerged in a wastewater lagoon provides fluid flow for bacteria growth by bubbling fine air bubbles upward through the media from diffusers arranged near the container bottom, which has openings allowing lagoon liquid to rise upward through the media with the air bubbles in a gentle circulational flow. Coarse bubble dispensers, also arranged under the media, deliver coarse bubbles during cleaning cycles for agitating the media to dislodge solid particles that settle downward though the bottom openings in the container.
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