বিস্তারিত

BIRM Media

Key Features

Under the proper conditions, no chemicals to purchase for maintenance. Regenerant not required.
Iron removal efficiency is extremely high.
Negligible labor cost: only periodic backwashing required.
Durable material with a long life and wide temperature range.
Weighs only 36-38 lbs./cu. ft.

BIRM Media curve 1

Alkalinity should be greater than two times the combined sulfate and chloride concentration.
Temperature Range: 35-100oF
Water pH range: 6.8-9.0
Dissolved Oxygen (D.O.) content must be equal to at least 15% of the iron and 29% of the manganese content.
Bed depth: 30-36 in.
Maximum Pressure Drop: 2-4 psi (14 -28 kPa) (Δ p increase from clean bed)
Freeboard: 50% of bed depth (min.)
Backwash rate: 10-12 gpm/sq. ft.
Rinse Rate: At service flow rate
Backwash Bed Expansion: 20-40% of bed depth (min.)
Service flow rate: 3.5-5 gpm/sq. ft. intermittent flow rates and/or favorable local conditions may allow higher flow rates

BIRM Media curve 2