Groundwater Arsenic Exceedance Treatment Technology BKsorb Iron Hydroxide Arsenic Removal Filter Media

Features

1. High Adsorption Capacity: 1 g has ≈300 m2 surface area, with unit volume adsorption capacity 4–10 times that of activated alumina.
2. High Removal Precision: A single filtration can reduce arsenic from several ppm to below 10 ppb, meeting the strictest standards.
3. Strong Selectivity: Highly selective adsorption of arsenic in water; calcium, magnesium, and other common anions are not adsorbed.
4. High Mechanical Strength: Particle size 0.2-2.0 mm, resistant to breakage and pulverization at backwash rates of 25-30 m/h.
5. Wide pH Applicability: Effective within pH 5–9, typically requiring no pH adjustment for drinking water treatment.
6. High Flow Rate Tolerance: Maintains effectiveness at 10-20 m/h, allowing for smaller tank sizes and space savings.
7. Cost-Effective: Operating cost per ton of water is 0.15–0.35 RMB (including filter media cost), with a lifespan of 2-5 years.

General Characteristics

1. Appearance: Black irregular granules
2. Main Fe Element Content: Over 60%
3. Weight: 1150 kg/m3
4. Specific Surface Area: 300 m2/g
5. Particle Size: 0.2-2.0 mm
6. Certifications: DIN EN 15029, NSF/ANSI 61

Operating Conditions

1. Applicable pH Range: 5-9
2. Floating Bed Space: 50%
3. Filter Bed Height: 800-1500 mm
4. Operating Flow Rate: 10-20 m/h
5. Backwash Flow Rate: 26 m/h

Benefits

1. Zero Dosing: No need for acid, alkali, oxidants, or flocculants.
2. Zero Regeneration: Direct media replacement upon saturation, no regeneration waste liquid.
3. Zero Sludge: Pure adsorption process, no arsenic-containing sludge produced.
4. Zero Power Consumption: Operates using gravity flow or raw water pressure.
5. Zero Pollution: Material itself is food-grade iron hydroxide, specially treated to prevent leaching of any harmful substances even when saturated.