- The Biodiscs consist of a set of discs made of composite material, mounted and solidly attached to a shaft.
- The shaft is slowly rotated by a planetary gear motor designed to operate 24 hours a day, with a speed of between 1 and 5 rpm, depending on the characteristics of the effluent to be treated.
- The Biodiscs are partly submerged in the effluent to be treated. With its rotary movement, the discs alternate between contact with the wastewater (from which the microorganisms absorb their organic nutrients) and the oxygen in the ambient air (the other element necessary for the process), leading to the growth of a biological film that covers the entire surface of the discs.
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