Tannin Removal Filters

The CA2 Tannin Reduction Filtration System is specially designed for water clarification (colour removal), bacterial capture/retention, chlorine removal and odour/taste removal.

 

The filter system is installed following a Twin or Triple cartridge Whole House Water Filtration System which first removes sediment particles. The CA2 is an automatic filtration system which contains silver carbon media to absorb tannin from the rainwater supply. Silver is used to inhibit bacteria growth in the media.

 

The system automatically back-washes itself on a weekly basis to remove impurities and ensure the carbon media is performing at its best to remove tannin from the rainwater supply.

Installation of the CA2 Carbon Tannin Reduction system is very simple.  It can be installed at the house or near the rainwater filtration system. It must be installed following a free-standing or wall-mounted rainwater filtration system.

 

The filter system removes sediment particles prior to the carbon filtration process through pleated and poly spun filter cartridges.

Tannin is organic material that has dissolved into the water creating the unpleasant ‘stained’ discoloration.  The CA2 system contains special silver carbon media that absorbs the organic material, trapping it inside. How it is fully absorbed comes down to exposure time. The system is very large containing 28kg of carbon media which allows a greater ‘contact’ time as the rainwater travels through the vessel. The common 20″ x 4.5″ carbon block filter cartridge can’t successfully remove all tannin staining, taste and odour because the water travels through the small surface area of the carbon cartridge at a greater speed to surface area ratio, limiting the absorption time of the media. The CA2 unit is programmed to automatically back-flush trapped contaminants and agitate the media on a weekly basis to ensure accurate performance.

 

The CA2 filter system will not restrict water flow and pressure any more than 5% and must be installed down stream of a suitable sediment filtration system. The silver carbon media is designed to inhibit the growth of bacteria and last for at least 3-5 years before servicing of the system will be required. This depends on the quality of the water and the level of tannin present.

 

It is important that rainwater tanks be cleaned at least every 2-3 years as all filtration systems are designed to filter and improve the water, not purify putrid water.