LEWATIT® DW 630

Summary

Product identification

• Product Name: Lewatit® DW 630
• Description: A macroporous, monodisperse, polystyrene-based strongly basic anion exchange resin (type I).
• Grade: Potable water purity grade.
• Functional Group: Quarternary amine, type 1.
• Matrix: Styrenic.
• Structure: Macroporous.
• Appearance: Beige, opaque.
• Delivery Form: Sulfate.

Applications

• Removal of natural sulfate and carbonate complexes of uranium from potable water to below 10 ppb.
• Removal of natural organic matter (NOM) such as humic acids, fulvic acids, organic building blocks, and carboxylic acids from potable water.

Operating limits

• Stability pH range: 0-14
• Stability temperature range: 1-80 °C
• Operating temperature (max.): 80 °C
• Operating pH range during exhaustion: 6-8

Feed water

• Lewatit® DW 630 is loaded with sulfate, which has the highest selectivity among major water constituents (Cl⁻, HCO₃⁻, NO₃⁻), thus minimizing exchange of these ions.

Product water

• Water composition will not be significantly changed except for the removal of target impurities.

Mechanical / hydraulic

• Uniformity coefficient (max.): 1.1
• Mean bead size (d₅₀): 0.62 (+/- 0.05) mm
• Bulk density for shipment (+/- 5%): 650 g/L
• Density (approx.): 1.1 g/mL
• Water retention (delivery form, approx.): 58-63 % by weight
• Volume change (during exhaustion, max. approx.): 16 %
• Bed depth for single column (min.): 1000 mm
• Back wash bed expansion (per m/h at 20°C): 40 %
• Specific pressure loss (at 15°C): 0.75 kPa*h/m²
• Max. pressure loss during operation: 300 kPa
• Specific flow rate (max.): 5-50 BV/h
• Freeboard during backwash (min. vol. %): 80-100 %

Regeneration

• H₂SO₄ regeneration concentration (approx.): 10 % by weight
• H₂SO₄ regeneration quantity co-current (min.): 250-350 g/L resin
• NaCl regeneration concentration (approx.): 8-12 % by weight
• NaCl regeneration quantity co-current (min.): 150-350 g/L resin
• NaCl regeneration quantity counter-current (min.): 100-200 g/L resin
• Regeneration contact time (min.): 30 minutes
• Slow rinse at regeneration flow rate (min.): 5-10 BV
• Fast rinse at service flow rate (min.): 10-20 BV

Electrical

• No specific electrical parameters were extracted.

Chemical

• Total capacity (delivery form, min.): 1.1 eq/L

Storage

• Storage time (after delivery, max.): 2 years
• Storage temperature range: -20 to +40 °C
• Recommended storage conditions: above freezing point of water, under roof, dry, without direct sunlight.
• Frozen resin should thaw gradually at ambient temperature and be completely thawed before handling or use.

Safety and Disposal

• Safety: Avoid contact with strong oxidants like nitric acid. Observe the safety data sheet.
• Disposal: Dispose of according to European waste nomenclature within the European Community.

Disclaimer

This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror