NQA
European Commission project  for your
afm logo of dryden aqua active filter media

factory.jpg (3825 bytes)

| AFM homepage | Contact us  | About us |  Shop |

Environmental & sustainable water treatment to save the planet
Trade marked and Patented
| DrydenAqua homepageAFM  homepage Applications for AFM |
          
Large seawater lagoons and lido systems now possible with the minimum of filtration when ACO, NoPhos and APF products are used to treat the water.   Perfotmance factor of public swimming pool systems reduced to less than 2 giving an 80% to 90% reduction in chlorine consumption.
Denitrification Columns| manual |  buy or view price |
Plastic polyethylene denitrification systems for marine or freshwater applications,  the equipment is designed for clean water applications such as nitrate reduction in marine public aquaria
    
column diameters    = 400mm
column heights        = 2000mm
area dims                 = 950mm x 1500mm
bed depth                 =1250mm
DFM media              = 200kg
Magphlow media    = 360kg 
Product code           =

Water flow  (max)    = 4 cubm/hr
Max volume of aquarium = 200 cubm
5% water exchange per week
Maximum biomass of fish = 500 kg
column diameters    = 500
column heights        = 2300
area dims                 = 1000 x 1400mm
bed depth                 = 1500mm
DFM media              = 360kg
Magphlow media    = 626 kg
Product code           =

Water flow   (max)   = 6 cubm/hr
Max volume of aquarium = 400 cubm
5% water exchange per week
Maximum biomass of fish = 1000 kg
column diameters    = 630
column heights        = 2300
area dims                 = 1100 x 1650 mm
bed depth                 = 1500mm
DFM media              = 550 kg
Magphlow media    = 900 kg
Product code           =

Water flow  (max)    = 10 cubm/hr
Max volume of aquarium = 600 cubm
5% water exchange per week
Maximum biomass of fish = 1500 kg
column diameters    = 750
column heights        = 2905
area dims                 = 1200 x 1800mm
bed depth                 = 2000 mm
DFM media              = 1000 kg
Magphlow media    =  1800 kg
Product code           =

Water flow  (max)     =  20 cubm/hr
Max volume of aquarium = 1000 cubm
5% water exchange per week
Maximum biomass of fish = 2500 kg

Sizing of the systems

The Denitrification process is very temperature dependent and works best above a minimum temperature of 16 deg C  and up to temperatures as high as 40 deg C in marine systems.  The process will also work in freshwater, but most of our data relates to marine aquaculture and public aquaria.

The maximum aquarium water volume relating to the column size is presented above.  Please note that the size is only a recommendation, in different parts of the world and with different systems, stocking density, feed type, water temperature, water exchanges, species of fish or aquatic animal will reflect on the  amount of ammonium produced, the degree of nitrification and the rate of nitrate increase.  The above sizes should therefore only be considered as a recommendation.