ADVANTAGES 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. Durable material with a long life and wide temperature range. Weighs only 40-45 lbs. /cu. Ft.
PHYSICAL PROPERTIES Color: Black Bulk Density: 40-45 lbs. Cu. Ft Mesh Size: 10 X 50 Specific Gravity: 2.0gm/CC Effective Size: 0.48 mm Uniformity Coefficient: 2.7
CONDITIONS FOR OPERATION Alkalinity should be greater than two times the combined sulfate and chloride concentration. Maximum water temp: 100° F/38° C Water pH range: 6.8-9.0 Dissolved Oxygen (D. O. ) content must be equal to at least 15% of the iron (or iron and manganese) content. Bed depth: 30-36 in. Freeboard: 50% of bed depth (min. ) Backwash rate: 10-12 gpm/sq. Ft. 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
INFLUENT AND BACKWASH LIMITATIONS Free chlorine concentration less than 0.5 ppm Hydrogen Sulfide should be removed prior to contact with Birm@ media Oil: None Present Polyphosphates: None present