Aquaflex 64

Summary

Product identification

The X-Flow Aquaflex 64 is an ultrafiltration module designed for the production of process and potable water.

• Article Code: 22E1FL895H
• Membrane Type: Hydrophilic, composed of a blend of polyvinylpyrrolidone (PVP) and polyethersulfone (PES)
• Nominal Pore Size: 20 nm
• Structure: Asymmetric/microporous
• EPA Est. No.: 090374-NLD-001

Operating limits

• Max. System Pressure: 300 kPa [43 psi]
• Max. Trans-Membrane Pressure: 300 kPa [43 psi]
• Max. Backflush Pressure: 300 kPa [43 psi]
• Temperature Range: 0-40 °C [32-104 °F]
• pH Range:
  • During filtration: > 2 (acids), < 12 (bases)
  • During cleaning: > 1 (acids), < 13 (bases)

Oxidant Contact Limits (individual oxidizing agent resistance)

• 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, at pH 11
• Hydrogen Peroxide (H₂O₂):
  • Typical: 200 ppm, at ≤ 40 °C
  • Maximum: 500 ppm
  • Cumulative: 350,000 ppm hours

Combined Exposure (NaOCl + ClO₂): The total combined exposure must be calculated as: 2.6 x Exposure to ClO₂ (in ppm hours) + Exposure to NaOCl (in ppm hours) < 250,000 ppm hours.

Feed water

Typical applications include filtration of surface water, potable water, and WWTP effluent. Backwash water should be free of particulates and be of UF permeate quality or better.

Product water

• Typical Permeate Quality: SDI<3, turbidity <0.1 NTU
• Microbial Reduction:
  • Bacteria (Pseudomonas diminuta): 99.9999% (LOG6) reduction
  • Virus (MS2 colifages): 99.99% (LOG4) reduction

Mechanical / hydraulic

• Membrane Diameter: 0.83 mm [32.7 mil]
• Effective Membrane Area: 64 m² [687 ft²]
• Feed Connection (D0): 220.0 mm [8.66 Inch]
• Module Length (L0): 1537.5 mm [60.51 Inch]
• Permeate Connection (d0): 42.6 mm [1.68 Inch]
• Dry Weight: ca. 34 kg [75 lbs]
• Weight (filled with water): ca. 66 kg [145 lbs]

Materials of Construction

• Housing: PVC white
• Flow Distributor: PVC/PP
• Potting: PU resin
• Membrane: PES/PVP

Process Characteristics (Water, 20 °C)

• Hydraulic Membrane Diameter: 0.83 mm [32.7 mil]
• Crossflow Flow Rate: 26.9 v m³/h [36 v gpm] (where v is superficial velocity in m/s [ft/s])
• Pressure-drop across module:
  • At 1 m/s: 64 kPa [9 psi]
  • At 2 m/s: 136 kPa [20 psi]

General Solvent Resistance

• Acids: ++
• Bases: ++
• Organic esters, ketones, ethers: -
• Aliphatic alcohols: +
• Aliphatic hydrocarbons: +
• Halogenated hydrocarbons: --
• Aromatic hydrocarbons: --
• Polar organic solvents: --
• Oils: ++

Cleaning Chemical Resistance

• Acids:
  • Hydrochloric Acid: ++
  • Nitric Acid: ++
  • Sulphuric Acid: ++
  • Phosphoric Acid: ++
  • Acetic Acid: ++
  • Citric Acid: ++
• Bases:
  • Sodium Hydroxide (<4%): ++
  • Potassium Hydroxide (<4%): ++

Storage

• New Modules: Store as supplied in original packaging, in a dry, normally ventilated place, away from heat, ignition, and direct sunlight. Store between 0 and 40 °C. Do not subject to freezing temperatures.
• Preservation Solution (as supplied): Aqueous solution of glycerine (20wt%) and sodium metabisulfite (1wt%).
• Shelf Life: Maximum 6 months for unused modules in unopened packaging under correct storage conditions.
• After Use: UF membrane modules must be stored wet at all times.
  • Short-term shutdowns (1-7 days): After a standard Chemical Enhanced Backwash (CEB), a daily backwash with UF permeate quality water for 30 seconds at 240 lmh should be adequate for bacteria control.
  • Long-term storage (> 7 days): Membranes should be cleaned using a CEB before disinfection. A 0.5% sodium metabisulfite solution can be used for disinfection. In both short and long-term storage, modules should remain filled with the storage solution.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used for the project.

Official datasheet (PDF)

Lenntech datasheet mirror