LEWATIT® DW 630

Summary

Product identification

Lewatit® DW 630 is a macroporous, monodisperse, polystyrene-based strongly basic anion exchange resin (type I). The resin is loaded with sulfate and has been washed to assure potable water purity grade.

Applications

• Removal of natural sulfate and carbonate complexes of uranium from potable water to rest 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.

Specified Data

• Common Description:
  • Delivery form: Sulfate
  • Functional group: Quarternary amine, type 1
  • Matrix: Styrenic
  • Structure: Macroporous
  • Appearance: Beige, opaque
• Specified Data:
  • Uniformity coefficient: max. 1.1
  • Mean bead size (d50): 0.62 (+/- 0.05) mm
  • Total capacity (delivery form): min. 1.1 eq/L

Typical Physical and Chemical Properties

• Bulk density for shipment (+/- 5%): 650 g/L
• Density: approx. 1.1 g/mL
• Water retention (delivery form): approx. 58-63 % weight
• Volume change (during exhaustion): max. approx. 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

Operation

• Operating temperature (max.): 80 °C
• Operating pH range during exhaustion: 6-8
• Bed depth for single column (min.): 1000 mm
• Back wash bed expansion per m/h (20°C): 40 %
• Specific pressure loss (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.): 80-100 vol. %

Regeneration

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

Additional Information & Regulations

• Safety precautions: Strong oxidants, e.g., nitric acid, can cause violent reactions. Observe the safety data sheet.
• Disposal: Dispose according to European Community waste nomenclature.
• Storage: Recommended to store above freezing point, dry, under roof, without direct sunlight. If frozen, thaw gradually at ambient temperature before handling or use.
• Packaging: Packaging stability limited to 24 months under recommended storage conditions.

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