|
BBK filter media |
Traditional filter media |
|
Consists of: |
Completely composted organic material, Leca, Moler and other additives.
|
Sphagnum, heather, bark, wood chops, coconut fibres, grape stones, pine needles etc. |
|
Counter pressure: |
Low during the entire lifetime
|
Rising concurrently with the decomposition of the filter media |
|
Air distribution: |
Constantly even distribution |
Uneven, formation of canals |
|
Life time: |
6 years-?? |
1-3 years |
|
Filter bed: |
Enclosed systems |
Open bed systems |
|
Cleaning efficiency: |
High, typical >95%, constant |
Low, typical <75%, large variations |
|
Biological activity: |
High biological activity. Large content of specific odour-removing M.O. selected for the individual type of industry |
Broad variety of micro-organisms, accidental, uncontrolled flora e.g. from activated sludge. Small percentage of odour- removing M.O. |
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