Birm ( 22.63 lbs) 1/2 Cu. Ft. Box: Birm is an efficient and economical method of removing dissolved iron and manganese compounds from raw water sup-plies.
It may be used in either gravity fed or pressur izedwater treatment systems.
Birm acts as an insoluble catalyst to enhance the reaction between dissolved oxygen (D.O.)and the iron compounds.
In ground waters, the dissolved iron is usually in the ferrous bicarbonate state due to an excess of free carbon dioxide and is not filterable.
Birm, acting as a catalyst between the oxygen and the soluble ironcom pounds, enhances the oxidation reaction of Fe++to Fe+++ and produces ferric hydroxide which precipitates and may be easily filtered.
The physical characteristics of Birm provide an excellent filter media which is easily cleaned by backwashing to remove the precipitant.
Birm is not consumed in the iron removal and therefore offers a tremendous economic advantage over many other iron removal methods.
Birm may also be used for manganese removal with the same dependability as iron removal but the water must be treated to have a pH of 8.0 to 9.0 for the best results.
If the water also contains iron, the pH should be below 8.5 High pH conditions may cause the formation of colloidal iron which is very difficult to filter out.
All other conditions remain the same for either manganese or ironremoval.
BirmAdvantages: Under the proper conditions, no chemicals to purchase for maintenance.
Regeneration not required.
Iron removal efficiency is extremely high.
Durable material with a long life and wide temperature range.
Weighs only 46-50 lb./cubic foot.Physical Properties: Color - Black Density - 47-50 lbs./cu. ft.
Effective Size - 0.61 mm Uniformity Coefficient - 1.72