Technical Specifications
The following table outlines the key physical and chemical properties of our garnet filter media. Values are based on typical testing results; guaranteed specifications available upon request. All data verified through independent laboratory analysis for consistency.
| Property | Typical Value | Test Method/Notes |
|---|---|---|
| Type | Almandite Garnet | Natural mineral, cubic crystal system |
| Color | Light tan to reddish-purple | Visual inspection |
| Hardness | 7.0 – 8.0 Mohs | Mohs scale; ensures durability in high-flow environments |
| Specific Gravity | >4.0 | High density for effective layering in multi-media filters |
| Bulk Density | 126 – 140 lbs/ft³ (2,020 – 2,240 kg/m³) | Supports stable filter bed formation |
| Effective Size | 0.15 – 0.35 mm (#30-40) or 0.3 mm (#8-12) | Custom grading available; filters down to 5-20 microns |
| Uniformity Coefficient (UC) | <1.5 – 1.6 | Ensures uniform flow and minimal channeling |
| Acid Solubility | <1.0% | HCl test; chemically stable in acidic conditions |
| Chemical Composition | SiO₂: 35-38% Al₂O₃: 20-25% Fe₂O₃: 30-35% MgO: <1% Other: Trace | XRF analysis; low impurities for safe water contact |
| Mesh Sizes Available | #8-12, #30-40, custom | Sieve analysis per ASTM E11 |
| Packaging | 50 lb bags, 1-ton super sacks | Standard export packaging for international shipping |
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Applications
Garnet filter media is versatile and widely used in water treatment processes where fine filtration is critical. Its high specific gravity allows it to form a stable lower layer in multi-media setups, complementing anthracite, sand, and gravel for optimized turbidity removal.
Key applications include:
- Municipal Water Treatment: Pre-filtration for drinking water plants to reduce suspended solids and improve clarity.
- Industrial Wastewater Filtration: Removal of fine particulates in manufacturing, mining, and oil & gas operations.
- Desalination and Reverse Osmosis Pre-Treatment: Protects membranes by capturing micro-particles in high-turbidity feeds.
- Swimming Pool and Aquaculture Systems: Maintains water quality by filtering out debris and algae.
- High-Turbidity Environments: Effective in construction site runoff or river water purification for TSS reduction down to 5 microns.
Advantages
Compared to traditional filter media like silica sand, our garnet offers superior performance for demanding international markets:
- Enhanced Filtration Efficiency: Captures finer particles (10-20 microns) with deeper bed penetration, reducing filter runs and backwash water usage.
- Durability and Longevity: High hardness and abrasion resistance minimize media loss over time, lowering replacement costs.
- Chemical Inertness: Resistant to acids and alkalis, ensuring no leaching into treated water.
- Operational Savings: Higher density reduces bed expansion during backwash, allowing for higher flow rates and energy efficiency.
- Environmental Benefits: Naturally sourced, recyclable, and silica-free alternative to reduce health risks associated with silicosis.
Compliance Information
Our garnet filter media adheres to stringent international standards to ensure safety, quality, and export readiness:
- Industry Standards: Compliant with AWWA B100-16 for granular filter media; ASTM E11 for sieve analysis; EN 12904 for water treatment materials.
- Certifications: NSF/ANSI/CAN 61 certified for drinking water contact; ISO 9001 for quality management.
- Safety and Handling: Non-hazardous per OSHA; use dust masks during handling to avoid inhalation. SDS available upon request.
- Environmental Compliance: Low environmental impact; sustainably mined with minimal processing. RoHS compliant; no heavy metals above trace levels.
- Export Documentation: Full compliance with international trade regulations, including certificates of origin, fumigation, and phytosanitary certificates as required.
For batch-specific test reports or custom compliance documentation, contact our export team.
