Self-cleaning rotating drum filters

Drum filter for aquaculture and aquariology

The drum filter is an automatic mechanical filtration system used to remove fine suspended solid particles from water. It is especially valued in RAS (Recirculating Aquaculture Systems) for its high efficiency, low water consumption, and continuous operation.

Operating principle:

Contaminated water enters the rotating drum covered with a fine mesh filter (typically between 20 and 100 microns).
Solid particles are trapped on the outer surface of the drum.
When the mesh begins to clog, sensors trigger an automatic backwash using high-pressure nozzles.
Waste is discharged through a waste chute, while clean water passes through the mesh into the outlet tank.

Advantages in aquaculture:

Fine and efficient filtration: captures particles not retained by coarse filters (feces, uneaten food).
Automatic maintenance: reduces the need for human intervention thanks to the automated rinse system.
Low water loss: cleaning is quick and targeted.
Improved water quality: reduces organic loads and protects downstream biofilters.
Continuous operation: ideal for intensive farming.
Long lifespan: robust design, often made of stainless steel or reinforced plastic.