Specialty Media (Removal of Iron and Manganese)
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.