LEWATIT® DW 630

Summary

Product identification

• Product Name: Lewatit® DW 630
• Product Type: Macroporous, monodisperse, polystyrene-based strongly basic anion exchange resin (Type I)
• Edition: 2017-07-03

Applications

Lewatit® DW 630 is especially suitable for:

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

Properties

• Functional group: Quarternary amine, type 1
• Matrix: Styrenic
• Structure: Macroporous
• Appearance: Beige, opaque
• Uniformity coefficient: max. 1.1
• Mean bead size (d₅₀): 0.62 mm (+/- 0.05)
• Total capacity (delivery form): min. 1.1 eq/L
• Bulk density for shipment: 650 g/L (+/- 5%)
• Density: approx. 1.1 g/mL
• Water retention (delivery form): approx. 58-63 weight %
• Volume change (during exhaustion): max. 16%
• Stability pH range: 0-14
• Stability temperature range: 1-80 °C
• Storage time (after delivery): max. 2 years
• Storage temperature range: -20 - +40 °C

Operating Parameters

• Operating temperature: max. 80 °C
• Operating pH range during exhaustion: 6-8
• Bed depth for single column: min. 1000 mm
• Backwash bed expansion: 40 % per m/h (at 20°C)
• Specific pressure loss: 0.75 kPa*h/m² (at 15°C)
• Max. pressure loss during operation: 300 kPa
• Specific flow rate: max. 5-50 BV/h
• Freeboard during backwash: min. 80-100 vol. %

Regeneration

• H₂SO₄ regeneration concentration: approx. 10 wt. %
• H₂SO₄ regeneration quantity (co-current): min. 250-350 g/L resin
• NaCl regeneration concentration: approx. 8-12 wt. %
• 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: 5-10 BV (at regeneration flow rate)
• Fast rinse: 10-20 BV (at service flow rate)

Additional Information

• Safety: Observe Safety Data Sheet. Avoid contact with strong oxidants.
• Disposal: Follow European waste nomenclature.
• Storage: Store in dry conditions, above freezing point, out of direct sunlight. If frozen, thaw gradually at ambient temperature.
• Packaging: Packaging stability is limited to 24 months. Use within this timeframe or check packaging condition regularly.

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