X-Flow-Compact-75G

Summary

Product identification

The product is an X-Flow Compact 75G Helix Ultrafiltration membrane element.

• Article Code: 8181KQB99O
• Type: Helix Ultrafiltration membrane
• Description: 12 INCH 5.2 mm Helix Compact 75G

Applications

This membrane is suitable for:

• Pre-treatment RO and NF
• Surface water
• Drinking and process water production
• Recovery of sandfilter backwash water
• Effluent treatment
• Membrane bioreactor
• Wastewater treatment
• Treatment of oil-in-water emulsions

Operating limits

• Max. feed pressure: 600 kPa
• Max. permeate pressure: 600 kPa
• Feed-permeate differential pressure: -100..+250 kPa
• Max. temperature: 50 °C
• Process temperature: Do not exceed 50 °C. For mechanical damage prevention, avoid sudden temperature changes, especially decreases. Bring the module back to ambient operating temperature slowly (typical 1 °C/min).

Mechanical / hydraulic

• Hydraulic membrane diameter: 5.2 mm
• Membrane area: 75 m²
• Module length: 3070 mm
• Permeate position: 290 mm
• Permeate length: 250 mm
• Feed connection ID: 300 mm
• Permeate connection ID: 65 mm
• Crossflow flow rate: 121.6 x v [m³/h] (where v = superficial velocity in m/s)
• Pressure-drop across module (laminar flow): 1.2 x L₀ x v [kPa] (where L₀ = module length in m)
• Pressure-drop across module (turbulent flow): 3.6 x L₀ x v¹·⁷⁵ [kPa] (where L₀ = module length in m)

Membrane Characteristics

• Material: Hydrophilic tubular polyvinylidene fluoride membrane cast on a polyester carrier
• Structure: Asymmetric
• Mean pore size: 30 nm
• Key features: Developed for use in large-scale processes for water purification, high performance, very good anti-fouling behavior. Elements can be backflushed for efficient cleaning, resulting in a higher average product flux.

Materials of Construction

• Housing: Glass fibre reinforced epoxy, drinking water quality
• Potting: EP resin
• Membrane:
  • Material composed of polyvinylidene fluoride
  • Carrier is a composite polyester woven/non woven

Chemical Resistance

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

• Acids, pH >2: +
• Bases, pH <11: +
• Organic esters, ketones, ethers: --
• Aliphatic alcohols: ++
• Aliphatic hydrocarbons: ++
• Halogenated hydrocarbons: ++
• Aromatic hydrocarbons: +
• Polar organic solvents: --
• Oils: ++

Cleaning Chemical Resistance

Recommended cleaning agents and conditions:

• NaOCl (active chlorine): 500 ppm max.
• H₂O₂: 1000 ppm max.
• NaOH: pH ≤ 11
• Nitric acid: pH ≥ 1
• Phosphoric acid: pH ≥ 1
• EDTA: pH ≤ 11
• Citric acid
• Enzymatic compounds
• During cleaning and/or disinfection, it is recommended to keep the pH between 1 and 11 and not to exceed a temperature of 40 °C.

Storage

New membrane modules are supplied in an aqueous preservation solution of glycerine (20wt%) and sodium metabisulfite (1wt%).

• Storage conditions: Store in a dry, normally ventilated place, away from heat, ignition sources, and direct sunlight, between 0 and 40 °C. Do not subject to freezing temperatures.
• 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): A daily backwash with UF permeate quality water for 30 seconds at 250, following a standard Chemical Enhanced Backwash (CEB), should be adequate for bacteria control.
• Long-term storage (>7 days): Membranes should be disinfected after a CEB. A 0.5% sodium metabisulfite solution can be used. In both short and long-term storage, modules should remain filled with storage solution.

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Disclaimer: This summary is based on the provided text extraction and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. For contractual purposes, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet