Aqua Medic Ocean Runner 3500 Руководство по эксплуатации - Страница 9

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Description of the Nitratreduktor

The

To provide surface material for the bacteria, the filter is filled with

Bactoballs. They create an ideal microclimate for denitrification.

To avoid dead zones, the water is recirculated internally in the Nitratereductor. A

recirculation pump is placed in the top.

In denitrifying filters, esp in units, where the water has to pass through a long way, it

can occur, that there is no even flow in the filter. Zones with a very low redoxpotential

are created, where hydrogensulfide is produced.( the filter starts to smell bad) On the

other side, zones with a rather high flow may arise, where nitrate is reduced onla to

nitrite. In each case the conditions vary in the different zones of the filter and it is

nearly impossible to find ist right working point.

These unpleasant effects are avoided by the construction of the

Nitratereductor. The recirculation ensures a complete mixing and the same redox

potential in the whole filter. Zones with very low redox potential and production of

hydrogen sulfide are avoided.

The redox potential can be used for the control of the filter. The effectivity and the

reliability of the filter can be increased .

Connections:

The following connections are located in the top of the Nitratereductor:

1. Inflow: Here, you can connect a 6 mm air tube. At the inflow, you find a drip

counter and a set valve. Here you can adjust the flow rate. The ideal value is app

2 - 4 l/h

2. Feeding. Through this opening you can feed the Denimar tabs to enhance the

denitrification.

3. Redoxelektrode. Through this opening, you can put the redox probe (s. options)

4. Outflow. The water outlet is located at the side of the filter. Here, you can connect

a 6 mm air tube.

Set - Up:

The Nitratereductor is not a hermetically sealed system. The top is not tightly

fastened, so that the produced gas ( nitrogen and CO

The Nitratereductor has to be placed in a way, that the water can flow off freely -

either direcly back into the aquarium or into the filtration chamber. In a seawater

aquarium it is an advantage, if the effluent is flowing to the influent of the protein

skimmer or the trickling filter. Inthe protein skimmer, the water is saturated with

oxigen, before it comes back into the aquarium.

Inflow. The inflow into the reductor, can be realised as a bypass from the main

recirculation pump. The flow rate is adjusted with the valve and the drop counter.

Starting.

Nitratereductor consists of a reaction vessel of 10 l volume.

)can escape.