X-Flow-Seaguard-64

Summary

Product identification

• Product Name: X-FLOW SEAGUARD 64 (ULTRAFILTRATION MEMBRANE)
• Article Code: 22F2FL895A
• Membrane Type: Hydrophilic blend of polyvinylpyrrolidone (PVP) and polyethersulfone (PES)
• Structure: Asymmetric/microporous
• Nominal Pore Size: 20 nm
• Application: Pretreatment for seawater reverse osmosis, particularly for standard seawater with low to moderate Total Suspended Solids (TSS) and/or organic load. Operates in dead-end mode with regular backwash (permeate only) and chemically enhanced backwash.

Operating limits

• Max. Transmembrane Pressure: 300 kPa [43 psi]
• Max. Backflush Pressure: 300 kPa [43 psi]
• Temperature Range: 0-40 °C [32-104 °F]
• Process Temperature Limit: Do not exceed 40 °C
• Temperature Change Rate: Max. 3 °C/min when returning to ambient operating temperature to avoid damage.
• Max. System Pressure: Refer to membrane housing supplier specifications (e.g., Codeline).
• pH during filtration: > 2
• pH during cleaning: > 1 (Acids), < 13 (Bases)
• Backwash Water Quality: Should be free of particulates and of UF permeate quality or better.
• Process Characteristics: Used for dead-end applications.

Product water

• Typical Permeate Quality:
  • SDI < 3
  • Turbidity < 0.1 NTU

Mechanical / hydraulic

• Membrane Fiber Diameter: 0.83 mm [32.7 mil]
• Effective Membrane Area: 64 m² [687 ft²]
• Module Outer Diameter (D0): 220.0 mm [8.66 Inch]
• Module Length (L0): 1537.5 mm [60.51 Inch]
• Permeate Connection Diameter (d0): 42.6 mm [1.68 Inch]
• Dry Weight: Approx. 34 kg [75 lbs]
• Weight (filled with water): Approx. 66 kg [145 lbs]
• Materials of Construction:
  • Housing: PVC grey
  • Flow distributor: PVC/PP
  • Potting: PU resin
  • Membrane: PES/PVP

Chemical resistance

The resistance of the membrane to solvents depends on actual process conditions; the indications below are guidelines.

• General Solvent Resistance:
  • Acids: ++ (Excellent)
  • Bases: ++ (Excellent)
  • Aliphatic alcohols: + (Good)
  • Aliphatic hydrocarbons: + (Good)
  • Halogenated hydrocarbons: -- (Poor)
  • Aromatic hydrocarbons: -- (Poor)
  • Polar organic solvents: -- (Poor)
  • Oils: ++ (Excellent)
• Cleaning Chemical Resistance:
  • Acids:
    • Hydrochloric Acid: ++
    • Nitric Acid: ++
    • Sulphuric Acid: ++
    • Phosphoric Acid: ++
    • Acetic Acid: ++
    • Citric Acid: ++
  • Bases:
    • Sodium Hydroxide (<4%): ++
    • Potassium Hydroxide (<4%): ++
• Oxidant Contact Limits: (Represent resistance to each individual oxidizing agent)
  • Sodium Hypochlorite (NaOCl):
    • Typical: 200 ppm, at ≤ 40 °C, at ≥ pH 10
    • Maximum: 500 ppm
    • Cumulative: 250,000 ppm hours; at ≥ pH 10
  • Chlorine Dioxide (ClO₂):
    • Typical: 1 ppm, at ≤ 40 °C
    • Maximum: 2 ppm
    • Cumulative: 90,000 ppm hours
  • Hydrogen Peroxide (H₂O₂):
    • Typical: 200 ppm, at ≤ 40 °C
    • Maximum: 500 ppm
    • Cumulative: 350,000 ppm hours
  • Combined Exposure (NaOCl + ClO₂):
    • Calculated as: 2.6 x Exposure to ClO₂ (in ppm hours) + Exposure to NaOCl (in ppm hours) < 250,000 ppm hours.
  • General Note: Reduce membrane exposure to oxidizing agents to a minimum. Exposure limits are affected by temperature, pH, and presence of metals. Preserve membranes free of oxidizing agents during plant stops.

Storage

• New Modules: Stored in original packaging, containing an aqueous preservation solution of glycerine (20wt%) and sodium metabisulfite (1wt%).
• Storage Environment: Dry, normally ventilated place, away from heat sources, ignition, and direct sunlight.
• Storage Temperature: Between 0 and 40 °C. Do not subject to freezing temperatures.
• Wet Storage (after use): Membranes must be stored wet at all times.
  • Short-term shutdowns (1-7 days): Daily backwash with UF permeate quality water for 30 seconds at 240 lmh, after a standard Chemical Enhanced Backwash (CEB) before shutdown.
  • Long-term storage (>7 days): Disinfect membranes with a compatible biocide (e.g., 0.5% sodium metabisulfite solution) after a CEB. Modules should remain filled with storage solution.
• Shelf Life: Maximum 6 months for unused modules in unopened packaging under correct storage conditions.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the official OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet