LEWATIT® DW 630

Summary

Product identification

Lewatit® DW 630 is a macroporous, monodisperse, polystyrene-based strongly basic anion exchange resin (type I). It is loaded with sulfate and is intended for potable water purity grade applications.

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
• Max. pressure loss during operation: 300 kPa

Feed water

• The resin is loaded with sulfate.

Product water

• Potable water purity grade.
• Removes target impurities without significantly exchanging major water constituents (Cl⁻, HCO₃⁻, NO₃⁻).

Electrical

No information available in the extract.

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. weight %): 58-63 %
• Volume change (during exhaustion, max. approx.): 16 %
• Bed depth for single column (min.): 1000 mm
• Backwash bed expansion per m/h (20°C): 40 %
• Specific pressure loss (15°C): 0.75 kPa*h/m²
• Specific flow rate (max.): 5-50 BV/h
• Freeboard during backwash (min. vol. %): 80-100 %

Regeneration

• H₂SO₄ regeneration concentration (approx. wt. %): 10 %
• H₂SO₄ regeneration quantity co-current (min. g/L resin): 250-350 g/L resin
• NaCl regeneration concentration (approx. wt. %): 8-12 %
• NaCl regeneration quantity co-current (min. g/L resin): 150-350 g/L resin
• NaCl regeneration quantity counter-current (min. g/L resin): 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

Storage

• Storage time (after delivery, max.): 2 years
• Storage temperature range: -20 - +40 °C
• Recommended to store above freezing point of water, under roof, in dry conditions, without direct sunlight.
• If frozen, allow to thaw gradually at ambient temperature before handling or use.

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