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ISO 9001 quality  company

AFM

Active Filter Media

replaces sand in all types of sand filter

Environmental & sustainable water treatment to save the planet

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AFM Applications ]| index | Drinking water | Swimming pools | Aquaria & water parks | Sewage effluent | wastewater & grey water| Desalination pre-treatment | Fish Farms | Cooling towers | environment |

technical specifications | How does it Work?  | Data sheet |

NoPhos can be added directly to the pool once the public have left for the evening,  or it may be dissolved in water and dosed in front of the AFM or sand filters.  NoPhos will react with phosphates in the water to form an insoluble precipitate that will be removed by the filters. Bacteria and algae require phosphate as a micro nutrient, if you remove phosphate you effectively stop the growth of bacteria and algae.  NoPhos reduces chlorine demand and combined chlorine by approximately 60%, system hygiene is improved and bacteria load on the system decreases.

 In a sand filter 5% of the weight of sand may be organic matter and bacteria, AFM filter media has on average 1 million times lower bacteria levels so the retained organic matter and bacterial load is much lower.  This is one of the reason why NoPhos works better with AFM.  The organic load and bacteria in the filters will gradually decrease, this will normally take 2 to 4 months, after which time the combined chlorine levels will start to drop.  Typical combined chlorine levels achieved are 0.1 to 0.3mg/l or a 60% reduction in previous  concentrations, and all this is achieved by adding a small amount of NoPhos

NoPhos may be added by hand to the balancing flow tank or pool at the end of the day after the public have left the pool. Can be added in daily or weekly quantities.  If the product is added once a week,  it is best added to the water after a filter back-wash.  The mains tap water can contain high levels of phosphate, NoPhos should  therefore be used when ever a large quantity of mains water is introduced to the system.

For best results NoPhos should be dosed continuously into the water prior to the AFM or sand filters.  Dissolve 1 Kg pack of  NoPhos into 20 litres of water and pump continuously into the water before the sand or AFM filters using a metering pump. Larger quantities or stronger concentrations may be prepared, however the application rates given in the above table should be followed.

Example.

25m pool with 400 cubic meters of water

Application rate = 1 to 2g/cubm of water/week = 400g to 800g of NoPhos per week is required.

Cost of treatment should be around 0.90 pounds UK per day ( 1.35 Euro)