Explanation - Evolution Aqua Nexus Eazy 200 Installation And Instruction Manual

EXPLANATION

Basic Operation Nexus:
The Nexus filter is simple yet innovative. Water enters the Nexus via inlet (A) Fig 2
into the inner chamber (B) which works as a basic vortex allowing larger solids to
settle out. The water then passes through the Eazy (C) where the finer particles
are removed and the first step
in biological treatment takes
place. From the Eazy the water
passes into the outer chamber
(D) where the remainder
of the biological treatment
takes place using the Kaldnes
Moving Bed Process.
The water then passes
through the grill into the
Outlet Chamber (E), where
it is returned to the pond
through the outlet (F). All
waste is discharged through
the waste valves (G). The Eazy
is cleaned by diverting the air
from the Outside chamber to
the Eazy using the valve (H).
Fig 2
Basic Operation Eazy :
The Eazy™ is a stainless steel vessel containing a set volume of static K1 media
(30L for Nexus 200, 45L for Nexus 300) which is located within the centre chamber
of the Nexus. After water enters the Nexus it rotates around the Eazy in the
centre chamber with a downward motion allowing the larger solids to settle
to the bottom of the chamber before passing through the slots of the Eazy into
the static K1 media. After passing through these slots the water flows upwards
through the K1 media where mechanical filtration takes place as small particles
are caught within the K1 media. The water then flows over the slots in the centre
column and into the outer chamber.
Basic Operation Outer Chamber:
The outer chamber of the Nexus contains the Kaldnes Moving Bed Process this
is where the final stage of biological treatment occurs. Biological breakdown
occurs through different strains of bacteria living on the K1 media. These bacteria
consume Ammonia and Nitrite transforming them into harmless Nitrate. The
amount of Ammonia and Nitrite produced in the pond is dependant on feed
rates and the type of food. For higher feed rates additional K1 media should be
added into the outer chamber (250g/day of average protein content food will
be broken down by 50L of K1).
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