For Iron & Manganese removal the ion exchange water softener is one of the most common tools of water treatment. Its function is to remove scale-forming calcium and magnesium ions from hard water. In many cases soluble iron can also be removed by water softeners, Birm and/or Crystal Rite.
The presence of iron in water is not considered a health problem. It will cause:
* orange/brown staining on sanitary ware, laundry etc.
At high concentrates in water manganese will cause:
* an unpleasant taste
Iron & Manganese Removal Systems
CWS offer a range of filter systems to eliminate iron and manganese from water.
Automatic back washing filter system using a Birm media. Birm is an efficient and economical method of removing dissolved iron and manganese compounds from raw water supplies. It acts as an insoluble catalyst to enhance the reaction between dissolved oxygen and the iron/manganese compounds. When using Birm for iron removal it is necessary that the water contains no oil or hydrogen sulphide, organic matter does not exceed 5 ppm, the dissolved oxygen content is at least 15% of the iron content and the pH is 7 or higher. For manganese removal the above also applies but the minimum pH is 8.0.
Automatic back-washing filter using crystal rite media which regenerates using tablet salt. Crystal rite provides superior removal of iron, manganese & hardness while raising pH levels of acidic water at the same time. Crystal rite crystals provide better filtration and are thoroughly cleaned by back-washing faster than ordinary resins without loss of product. Crystal Rite is available in two types;
Crystal Right 100 is used where the raw water pH is between 6.0 and 7.0. (if the pH is lower than 6.0 then conventional pH correction will also be needed.)
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