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Bio-drum is a type of —————- filter
EXPLANATION
Recirculating Aquaculture Systems & Filtratio
- Bio-Drum Filters in Aquaculture:
- Bio-Drum (Rotating Biological Contactor, RBC): A type of Biological Filter consisting of a rotating drum packed with high-surface-area plastic media half-submerged in water.
- As it rotates, nitrifying bacteria (Nitrosomonas and Nitrobacter) alternate between wastewater and atmospheric air, oxidizing toxic ammonia into nitrate.
- Correct Option: Option 1 (Biological).
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