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๐Ÿ”ฉIron & Manganese Removal

AquanOX
Advanced Oxidation Media

Aggressive iron and manganese removal for West African borehole water. Delivers crystal-clear, odourless water from even the most challenging high-iron sources.

The Iron Problem in Ghana

Iron contamination is the most common water quality issue in Ghanaian boreholes. Concentrations of 3โ€“10 mg/L are typical in the Voltaian Basin, parts of Ashanti Region, and coastal aquifers. Dissolved iron (Feยฒโบ) appears clear when pumped but oxidises on contact with air, producing reddish-brown staining, metallic taste, and bacterial fouling (iron bacteria).

Manganese (Mn) often co-occurs with iron, causing black staining and neurological health concerns at elevated concentrations. WHO limits: Fe < 0.3 mg/L, Mn < 0.1 mg/L. Most conventional filtration methods struggle with Ghana's high iron levels.

AquanOX is engineered specifically for aggressive iron/manganese removal in challenging African conditions. Its catalytic manganese dioxide surface oxidises dissolved iron and manganese rapidly, allowing filtration without chemical regeneration.

How AquanOX Works

AquanOX operates as a catalytic oxidation filter. As water passes through the media bed, the manganese dioxide (MnOโ‚‚) coating catalyses the oxidation of ferrous iron (Feยฒโบ) to ferric iron (Feยณโบ), and manganous manganese (Mnยฒโบ) to manganic manganese (Mnโดโบ). The oxidised metals precipitate as insoluble hydroxides and are trapped in the filter bed.

During backwashing, precipitated iron and manganese are flushed to waste. The MnOโ‚‚ coating regenerates naturally in the presence of dissolved oxygen โ€” no potassium permanganate or chemical dosing required for most applications.

Performance Range: AquanOX removes iron up to 15 mg/L and manganese up to 3 mg/L. For higher concentrations, contact our technical team for multi-stage system design.

Applications

  • Borehole Treatment: Primary application for high-iron groundwater in residential, commercial, and community water systems
  • Sachet Water Plants: Pre-RO iron removal to prevent membrane fouling and extend RO life
  • Mining & Industrial: Process water treatment for cooling, washing, and potable supply
  • Municipal Pre-Treatment: Iron removal upstream of distribution to eliminate customer complaints
  • Bottled Water Production: Aesthetic iron removal for clear, palatable finished product
FromGHS 680
per 25kg bag

Quick Specs

MaterialMnOโ‚‚-coated ceramic core
Density1.05 g/cmยณ
Removes FeUp to 15 mg/L
Removes MnUp to 3 mg/L
Operating pH6.0โ€“9.0
Bed Depth30โ€“36 inches recommended
Service Flow3โ€“5 gpm/ftยฒ
Backwash Rate12โ€“15 gpm/ftยฒ

System Design Considerations

Pre-Treatment Requirements

  • Turbidity: Reduce to < 5 NTU with sediment pre-filter
  • Dissolved Oxygen: Minimum 15% saturation required for oxidation
  • Hโ‚‚S: If present > 1 mg/L, use separate Hโ‚‚S removal stage first
  • pH: Optimal range 7.0โ€“8.5; below 6.5 requires pH correction first

Maintenance Schedule

  • Daily: Check backwash frequency and pressure differential
  • Weekly: Backwash at 12โ€“15 gpm/ftยฒ for 15โ€“20 minutes
  • Monthly: Test effluent iron/manganese levels
  • Annually: Top up media 5โ€“10% to replace attrition losses

Technical Support Available

Need help sizing your AquanOX system? Our engineers provide free system design support.

๐Ÿ“ž Technical Line: 024 078 1329