Birm is an efficient and economical media for the reduction of dissolved iron and manganese compounds from raw water supplies. It may be used in either gravity fed or pressurized water treatment systems. Birm acts as an insoluble catalyst to enhance the reaction between dissolved oxygen (D.O.) and the iron compounds.

Application:

The physical characteristics of Birm provide an excellent filter media which is easily cleaned by back-washing to remove the precipitant. Birm is not consumed in the iron removal operation and therefore offers a tremendous economic advantage over many other iron removal methods.

Other advantages of Birm include long material life with relatively low attrition loss, a wide temperature performance range and extremely high removal efficiency.

Negligible labor costs are involved because Birm does not require chemicals for regeneration, only periodic backwashing is required.

Removes dissolved iron and manganese. Requires min. pH of 6.8 and dissolved oxygen equal to 15% of iron and manganese. Gravel bed required.

Features:

Under the proper conditions, no chemicals to purchase for maintenance. Regeneration not required.
Iron removal efficiency is extremely high
Negligible labor cost: only periodic backwashing required
Backwash rate: 10-12 gpm/sq.ft.
Flow rate: 3.5-5 gpm/sq.ft. (intermittent flow rates and/or favorable local conditions may allow higher flow rates)
Durable material with a long life and wide temperature range (max temp: 100°F/38°C)