What Is DMI‑65 Iron Removal Media?

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The DMI‑65 iron removal media removes iron and manganese from water efficiently. Unlike older methods, it does not need potassium permanganate. Instead, the silica-based media oxidizes iron and manganese as water flows through it, then traps the particles in the media bed. As a result, you get cleaner water and a safer system.

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Also, this media works well in homes, businesses, and industrial water systems. Moreover, it protects equipment like water heaters and RO membranes, which reduces maintenance costs.

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Technical Specifications & Operating Conditions

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• Colour: Brown to Black

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• Bulk Density: ~1.46 t/m³

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• Specific Gravity: 2.69

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• Particle Size: 0.3 – 0.6 mm

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• Mesh Size: 20 – 40 mesh

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• Uniformity Coefficient (UC): 1.4

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• Annual Attrition: ~1–5%

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• pH Range: 5.8 – 8.6

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• Max Temperature: 45 °C

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• Minimum Bed Depth: 600 mm

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• Freeboard: 40% minimum

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• Service Flow Rate: 5 – 30 m³/m² · h

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• Backwash Flow Rate: 25 – 40 m³/m² · h (bed expansion 20–50%)

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• Lifespan: 5–10 years

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• Certification: NSF / ANSI 61

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How It Works

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First, the media’s catalytic surface oxidizes iron (Fe²⁺) to ferric iron (Fe³⁺). Consequently, the resulting particles stick in the media bed.

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In addition, DMI‑65 removes certain heavy metals, including arsenic, under proper conditions. Therefore, the system not only protects water but also reduces maintenance and chemical use.

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Moreover, because it does not require chemical regeneration, you save time and money. For example, households can maintain clean water without handling chemicals.

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Benefits

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• High Efficiency: Removes iron and manganese, even in small amounts.

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• Low Maintenance: Backwash keeps the system clean; no chemical regeneration is needed.

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• Protects Equipment: Shields RO membranes, water heaters, and plumbing.

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• Durable Media: Lasts up to 10 years under normal conditions.

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• Flexible Operation: Works across a broad pH range and temperatures up to 45 °C.

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Ideal Applications

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• Well or borehole water systems

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• Industrial water treatment without chemicals

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• Pre-treatment for RO systems

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• Municipal water filtration

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Installation & Usage Tips

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• Maintain a small chlorine residual (0.1–0.3 ppm) to keep the media active.

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• Ensure a bed depth of 600 mm or more and proper freeboard for backwash.

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• Backwash regularly to remove trapped particles.

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• Monitor pH and water quality to maintain optimal performance.

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• Replace media only after 5–10 years of use.

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