Aquaflex 40

Summary

Product identification

The Aquaflex 40 is an ultrafiltration module, used for the production of process and potable water. Typical applications include the filtration of surface water, potable water, and WWTP effluent.

• Product Name: X-Flow Aquaflex 40
• Article Code: 2871FL395NH
• Membrane Type: Hydrophilic membrane composed of a blend of polyvinylpyrrolidone and polyethersulfone
• Structure: Asymmetric/microporous
• Nominal Pore Size: 20 nm
• Performance: High performance and very good anti-fouling behavior
• Microbial Reduction:
  • 99.9999% (LOG6) reduction of bacteria (Pseudomonas diminuta) by mechanical means.
  • 99.99% (LOG 4) reduction of virus (MS2 colifages) by mechanical means.
• EPA Est. No.: 090374-NLD-001
• Mode of Operation: Feed-and-bleed with a minor crossflow or dead-end mode with regular backwash (permeate only) and chemically enhanced backwash.

Operating limits

• Max. System Pressure: 400 kPa [58 psi]
• Max. Transmembrane Pressure: 300 kPa [43 psi]
• Max. Backflush Pressure: 300 kPa [43 psi]
• Temperature Range: 0-40 °C [32-104 °F]
• pH during filtration: > 2 and < 12
• pH during cleaning: > 1 and < 13
• Max. Temperature Change: 3 °C/min (to avoid mechanical damage)

Feed water

• Backwash water should be free of particulates and should be of UF permeate quality or better.

Product water

• Typical Permeate Quality: SDI<3, turbidity <0.1 NTU

Mechanical / hydraulic

• Membrane Diameter: 0.8 mm [31 mil]
• Membrane Area: 40 m² [430 ft²]
• Feed Connection D0: 220.0 mm [8.66 Inch]
• Element Outer Diameter D1: 200 mm [7.9 Inch]
• Module Length L0: 1537.5 mm [60.51 Inch]
• Permeate Connection D2: 42.6 mm [1.68 Inch]
• Hydraulic Membrane Diameter: 0.8 mm [31 mil]
• Crossflow Flow Rate: 19.8 x v m³/h [26 x v gpm] (where v is superficial velocity in m/s [ft/s])
• Pressure-drop across module at 1 m/s: 72 kPa [10 psi]
• Pressure-drop across module at 2 m/s: 150 kPa [21 psi]
• Dry Weight of Membrane Element: ca. 27 kg [59 lbs]
• Membrane Element Filled with Water: ca. 57 kg [125 lbs]

Materials of Construction

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

General Solvent Resistance (Guideline only)

• 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: ++
  • pH > 1 during cleaning
• Bases:
  • Sodium Hydroxide (<4%): ++
  • Potassium Hydroxide (<4%): ++
  • pH < 13 during cleaning
• Oxidants:
  • Sodium Hypochlorite (NaOCl):
    • Typical: 200 ppm, at ≤ 40 ºC at ≥ pH 10
    • Maximum: 500 ppm
    • Cumulative: 250,000 ppm hours; ≥ pH 10
  • Chlorine Dioxide (ClO₂):
    • Typical: 1 ppm, at ≤ 40 ºC
    • Maximum: 2 ppm
    • Cumulative: 90,000 ppm hours; pH 11
  • Hydrogen Peroxide (H₂O₂):
    • Typical: 200 ppm, at ≤ 40 ºC
    • Maximum: 500 ppm
    • Cumulative: 350,000 ppm hours
  • Combined exposure (NaOCl + ClO₂): 2.6 x Exposure to ClO₂ (in ppm hours) + Exposure to NaOCl (in ppm hours) < 250,000 ppm hours

Storage

• New membrane modules can be stored as supplied in the original packaging.
• Membrane elements contain an aqueous preservation solution of glycerine (20wt%) and sodium metabisulfite (1wt%).
• Store in a dry, normally ventilated place, away from sources of heat, ignition, and direct sunlight.
• Store between 0 and 40 °C.
• Do not subject the membrane modules to any freezing temperatures.
• Shelf Life: A maximum of 6 months for unused modules in unopened packaging under correct storage conditions after transfer of ownership.
• After use, UF membrane modules need to be stored wet at all times.
• Short-term shutdowns (1 – 7 days): A daily backwash with UF permeate quality water for 30 seconds at 250 lmh should be adequate for bacteria control. Modules must be cleaned by a standard Chemical Enhanced Backwash (CEB) before the shutdown period.
• Long-term storage (> 7 days): Membranes should be disinfected after a CEB. A 0.5% sodium metabisulfite solution can be used for disinfection.
• In both short and long-term storage situations, the modules should remain filled with 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 for any project must always match the specific OEM PDF revision used for that project.

Official datasheet (PDF)

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