10
Fig. 2: Venturi pump Ocean Runner PH 2000 with mesh wheel
3. Theory
3. Theory
Protein skimming is a method of physical water treatment. It uses a phenomenon known from our
daily experience: the adhesion of surface active substances to air water layers. If we add a drop of
oil to a water surface, a thin film is produced with a thickness of only one molecule. Surface active
compounds like proteins behave in the same way. The Turboflotor Multi SL uses its air bubbles to
create a large water surface for the waste substances to attach themselves to. These air bubbles
are forced into the reactor-pipe in a such a way that they undergo a long contact time within the
counter-current. Enriched with organic substances, they rise to the top and form a firm foam, that
is dehydrated and pushed into the collection cup. This method removes organic wastes from the
aquarium water before they become part of the biological waste treatment cycle.
The Ocean Runner PH 2000 venturi pump draws the water out of the aquarium or the filter
chamber, mixes it in the pump housing with air which is then cut into small air bubbles by the AB
Aqua Medic mesh wheel. This water/air mixture is pumped into the reaction pipe where the organic
substances are taken up by the air bubbles. Foam is formed and pushed into the foam cup. The
cleaned water flows to the bottom of the skimmer and is transported via two transparent tubes on
the outside of skimmer back into the aquarium or into the filter chamber.
1.
Lid of pump housing
2.
Pressure fitting
3.
O-ring for pressure fitting
4.
Rubber bearing
5.
Ceramic shaft
6.
Washer
7.
Impeller with mesh wheel
8.
O-Ring
9.
Motor
10.
Air injection nozzle
11.
Bayonet lock
12.
Filter basket
13.
Holding plate
14.
Rubber sucker
15.
Lid for filter basket
16.
O-ring for air intake nozzle
17.
Reduction for air intake nozzle
18.
Air intake nozzle
