Biofilter media products
We supply a range of biofilter media. This product is sold by the cubic metre.
These products are suited to fluidized or moving bed tank systems. These are also called “Biofilm Reactor (MBBR)” systems and are used for the treatment of water and wastewater.
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Model
|
Size (mm)
|
Density (g/cm3)
|
Specific
Surface
Area (m2 /m3)
|
Biofilm formation
duration (days)
|
Nitrification
efficiency
|
Preferential
temperature (oC)
|
Services
life (years)
|
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BFCLO1
|
Φ12 x 1 0
|
1.3
|
>800
|
5-15
|
650
|
<65
|
>10
|
|
BFCLO2
|
Φ11 x 1 0
|
1.4
|
>800
|
5-15
|
750
|
<65
|
>10
|
|
BFCLO3
|
Φ10 x10
|
1.68
|
>900
|
5-15
|
850
|
<65
|
>10
|
|
BFCLO4
|
Φ14 x 10
|
1.25
|
>650
|
5-15
|
500
|
<65
|
>10
|
|
BFCL05
|
Φ25 x 1 2
|
>0.95
|
>500
|
5-15
|
400
|
<65
|
>10
|
|
Self cleaning due to turbulence
Due to the turbulent movement of the biofilter media in suspension, the filter medium is self-cleaning, requiring no maintenance. This allows the filter to reach optimum effectiveness without the disturbance of periodic maintenance, avoiding unnecessary loss of bacteria within the filter. This allows stable, low levels of ammonia and nitrite within the water.
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BFCLO1
|
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BFCLO2
|
|
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BFCLO3
|
|
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BFCLO4
|
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BFMCLO5
|
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The first few of these products are similar to the patented Kaldnes media used in fish farming and waste water treatment. The design creates an environment for effective nitrification to take place. Water flow is created by aeration that circulates the media throughout the vessel. This high surface area of these products translates into a small physical area needed for the biofiltration unit.
Due to vigorous mixing of the Kaldnes-like media through aeration, the media is self-cleaning, requiring no maintenance. This allows the filter to reach optimum effectiveness. Periodic maintenance is not necessary, preventing the unnecessary loss of bacteria and subsequent ammonia and nitrite spikes in the system.
Media volume needed
With good turbulence and aeration, a feed rate of between 0.25kgs and 0.75kgs of 40% protein food per day requires 50 litres of media.
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