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Manganese Dioxide (MnO₂) | Iron & Manganese Removal Filter Media

Manganese Dioxide (MnO₂) | Iron & Manganese Removal Filter Media

Rs. 1,089.00
Rs. 1,579.00 Rs. 1,089.00
Rs. 43.56/kg
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Manganese Dioxide (MnO₂) Filter Media is a catalytic filtration media used for the removal of dissolved iron and manganese from groundwater, borewell water, and other water sources. Its catalytic surface promotes the oxidation of soluble iron and manganese into insoluble oxides, which are then retained within the filter bed and removed through periodic backwashing.

Manganese dioxide is particularly useful where conventional sand filtration is insufficient for dissolved iron and manganese removal. Depending on the grade and manganese dioxide content, the media can provide strong catalytic activity and may operate with comparatively simple regeneration or backwashing requirements.

It is widely used in iron removal filters, manganese removal plants, groundwater treatment systems, and RO pretreatment, helping protect downstream membranes, softeners, ion exchange resins, and other water treatment equipment from iron and manganese fouling.

🫗 Quick Highlights

  • Catalytic media for iron and manganese removal
  • High oxidation and filtration capability
  • Effective for dissolved ferrous iron and manganese
  • Suitable for groundwater and borewell water treatment
  • Helps reduce staining, colour, taste, and metallic odour
  • Available in different grades and particle sizes
  • Suitable for pressure filter vessels
  • Periodic water backwashing removes accumulated precipitates
  • Long service life when operated under suitable water conditions
  • Ideal for industrial, commercial, and residential water treatment
  • Iron & Manganese Removal
  • Backwash Compatible
  • Protects downstream equipment
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💧 Key Benefits

  • Efficient iron removal: Promotes oxidation of dissolved ferrous iron into filterable ferric iron particles.
  • Manganese reduction: Provides catalytic surfaces that assist in the oxidation and removal of dissolved manganese.
  • Dual-purpose treatment: Can be used for combined iron and manganese removal where feed water chemistry is suitable.
  • Protects downstream equipment: Reduces iron and manganese loading on RO membranes, ion exchange resins, activated carbon, and other treatment stages.
  • Simple maintenance: Accumulated precipitates can be removed through properly designed backwashing.
  • High catalytic activity: Provides more effective oxidation than ordinary inert filtration sand.
  • Suitable for pressure filtration: Can be installed in FRP, MS, or SS pressure vessels.
  • Long operational life: Properly selected media can provide extended service with appropriate pretreatment and backwashing.
  • Improves water quality: Helps reduce reddish/brown staining, black staining, metallic taste, and discoloration associated with iron and manganese.

📌 Technical Properties

  • Media Type: Manganese Dioxide Catalytic Filter Media
  • Chemical Composition: Manganese Dioxide (MnO₂)
  • Appearance: Dark Brown to Black Granular Media
  • Form: Granular
  • Particle Size: 1" x 3/4"
  • MnO₂ Content: Grade dependent
  • Filtration Mechanism: Catalytic Oxidation + Mechanical Filtration
  • Main Target Contaminants: Dissolved Iron and Manganese
  • Mechanical Strength: Grade dependent
  • Bulk Density: Grade dependent
  • Operating pH: Application and media-grade dependent
  • Backwashing: Required for removal of accumulated iron and manganese precipitates
  • Packaging: 25 kg

🌊 Applications

  • Iron Removal Plants
  • Manganese Removal Plants
  • Iron & Manganese Removal Filters
  • Borewell Water Treatment
  • Groundwater Treatment
  • Industrial Water Treatment
  • Municipal Water Treatment
  • RO Pretreatment
  • Water Softener Pretreatment
  • Process Water Treatment
  • Drinking Water Treatment
  • Hotels, Hospitals & Institutions
  • Packaged Drinking Water Plants

🔧 Installation & Operating Guidelines

  1. Install the selected MnO₂ media in a properly designed pressure filter vessel.
  2. Provide an appropriate underdrain and graded support gravel layer below the media.
  3. Wash and backwash the media thoroughly before placing the system into service.
  4. Ensure adequate oxidation conditions are available in the feed water. Aeration or another suitable oxidation step may be required depending on raw water chemistry and media grade.
  5. Maintain the operating pH recommended for the selected MnO₂ media and target contaminant.
  6. Operate within the recommended service flow rate to provide sufficient contact time.
  7. Perform regular backwashing to remove accumulated iron and manganese oxides.
  8. Monitor inlet and outlet iron and manganese concentrations to evaluate performance.
  9. For difficult or high-contaminant water, consider pretreatment such as aeration, oxidation, clarification, or sediment filtration.
  10. Follow the specific operating and regeneration requirements of the selected media grade.

⚙️ How It Works

Manganese dioxide works primarily through catalytic oxidation and filtration.

When groundwater containing dissolved ferrous iron (Fe²⁺) or manganese enters the filter, the MnO₂ surface promotes oxidation of these dissolved species into insoluble forms. The resulting iron and manganese oxides are retained within the granular media bed.

During normal filtration, treated water passes through the media while the precipitated contaminants remain trapped. As the filter accumulates these deposits, pressure drop increases. Backwashing then expands and cleans the media bed, flushing the accumulated solids out of the vessel and restoring filtration capacity.

The exact oxidation mechanism and regeneration requirement depend on the grade of MnO₂ media and the chemistry of the raw water.

🥽 Safety & Handling

  • Store the media in a clean, dry, covered area.
  • Keep bags sealed until installation to prevent contamination.
  • Avoid mixing the media with incompatible chemicals or foreign materials.
  • Wear gloves, safety glasses, and a suitable dust mask when handling dry media.
  • Minimize dust generation during loading and unloading.
  • Wash the media thoroughly before commissioning.
  • Use suitable lifting equipment when handling heavy bags.
  • Dispose of spent media in accordance with applicable local regulations and the contaminants accumulated on the media.

⚙️ How It Works

Manganese dioxide works primarily through catalytic oxidation and filtration.

When groundwater containing dissolved ferrous iron (Fe²⁺) or manganese enters the filter, the MnO₂ surface promotes oxidation of these dissolved species into insoluble forms. The resulting iron and manganese oxides are retained within the granular media bed.

During normal filtration, treated water passes through the media while the precipitated contaminants remain trapped. As the filter accumulates these deposits, pressure drop increases. Backwashing then expands and cleans the media bed, flushing the accumulated solids out of the vessel and restoring filtration capacity.

The exact oxidation mechanism and regeneration requirement depend on the grade of MnO₂ media and the chemistry of the raw water.

⚠️ Limitations and Precautions

Performance is strongly dependent on pH, dissolved oxygen, iron concentration, manganese concentration, alkalinity, competing contaminants, and flow rate.

Different MnO₂ media grades have different catalytic activity and operating requirements; the media should not be selected solely by name.

Adequate oxidation conditions may be necessary for effective iron and manganese removal.

High suspended solids, oil, grease, or organic contamination can foul the media and should be addressed through pretreatment.

Extremely high iron or manganese concentrations may require aeration, chemical oxidation, clarification, or staged treatment before the MnO₂ filter.

Regular backwashing is essential to prevent excessive pressure drop and media fouling.

MnO₂ media does not remove dissolved salts, hardness, fluoride, or other unrelated dissolved contaminants.

The actual service life and regeneration requirement depend on the selected grade and raw water quality.

A raw water analysis is recommended before final media selection and filter sizing.

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FREQUENTLY ASKED QUESTIONS

Do you provide installation services?

Yes. We install RO plants, softeners, iron removal filters, ETP/STP systems, and all types of domestic & industrial water treatment plants across India.

Do you offer GST invoices?

Yes. Every order comes with a100% GST-compliant invoice, suitable for dealers, resellers, and industrial use.

How do I know which chemical or filter is suitable for my water?

You can share your raw water report, TDS, or problem description. Our technical team will recommend the correct chemical, membrane, filter media, or system.

Please connect with us from Contact Us.

Can I speak to someone before placing an order?

Yes, you can contact us directly via phone, email, or WhatsApp for product guidance or bulk pricing.

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