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Specialty Media (Removal of Iron and Manganese)

Specialty Media
IMA-65 Specialty Media is a revolutionary silica sand based filtration media designed for the removal of iron and manganese without the use of potassium permanganate. The unique micro porous structure of IMA-65 efficiently removes dissolved iron to as low as 0.005 ppm and manganese to 0.001 ppm. After initial activation, the IMA-65 acts as an oxidation catalyst with immediate oxidation and filtration of the insoluble precipitates. The media has been used extensively in a wide variety of applications in Japan for over 30 years. IMA-65 has been tested and certified by the Water Quality Association in accordance with NSF/ANSI 61.


  • Eliminates Potassium Permanganate. Operates with continuous injection of sodium hypochlorite at low residual levels (0.1 to 0.3 ppm).
  • Wide pH range. Stable and satisfactory performance at pH 5.8 to 8.6.
  • High Flow Rates. IMA-65 can operate at linear filtration velocities up to twice that of conventional media with a corresponding reduction in capital equipment costs.
  • Higher Operating Temperatures. Maximum operating temperature of 113° F (45° C).
  • Long Life. IMA-65 is not consumed in the process, providing considerable advantages over other processes or media.
  • Regeneration Not Required. After initial activation, only sodium hypochlorite feed is required.
  • System Compatibility. Physical properties are similar to that of competitive media, allowing conversion to IMA-65 without major hardware modifications.
  • Arsenic Removal. IMA-65 has been shown to be effective in the removal of arsenic associated with iron-containing influent. If necessary, ferric chloride can be introduced to treat waters with low influent iron levels or to enhance removal when treating waters with high levels of arsenic.


ModelNumber of Tanks in SystemMinimum Flow (gpm)Maximum Flow (gpm)Filtration Surface (sq ft)Backwash (gpm)Maximum Pressure
IMA-1860-1A19261.7727100 psi
IMA-2460-1A116473.1547100 psi
IMA-1860-2A218533.5427100 psi
IMA-3060-1A125744.9174100 psi
IMA-1860-3A327705.3127100 psi
IMA-2460-2A232956.3047100 psi
IMA-3660-1A1351077.10107100 psi
IMA-2460-3A3481429.4547100 psi
IMA-3060-2A2501479.8274100 psi
IMA-4860-1A16318912.6018980 psi
IMA-3660-2A27021314.20107100 psi
IMA-3060-3A37522114.7374100 psi
IMA-5460-1A18023915.9123980 psi
IMA-3660-3A310532021.40107100 psi
IMA-4860-2A212637825.2018980 psi
IMA-5460-2A216047731.8223980 psi
IMA-4860-3A318956737.8018980 psi
IMA-5460-3A324016347.7323980 psi
IMA-4860-4A425275650.4018980 psi
IMA-4860-5A531594563.0018980 psi
IMA-5460-4A432095563.6423980 psi
IMA-4860-6A6378113475.6018980 psi
IMA-5460-5A5400119379.5523980 psi
IMA-5460-6A6480143295.4623980 psi

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