X-Flow-Compact-4-0G

Summary

Product identification

• Product Name: X-FLOW COMPACT 4.0G (ULTRAFILTRATION MEMBRANE)
• Article Code: 7381KPC99RH
• Membrane Type: Hydrophilic tubular polyvinylidene fluoride membrane cast on a composite polyester/polyolefine carrier
• Structure: Asymmetric
• Mean Pore Size: 30 nm

Applications

• Effluent treatment
• Membrane bioreactor

Element Specifications

• Membrane diameter: 8.0 mm
• Membrane area: 4.0 m²
• Module diameter D0: 90 mm
• Module length L0: 3000 mm (±1)
• Feed connection D1: 3 inch
• Permeate connection d1: 1 inch
• Permeate length I0: 80 mm
• Permeate position I1: 66 mm (±1)

Weight Specifications

• Dry weight of membrane element: ca. 5 kg [11 lbs]
• Membrane element filled with water: ca. 15 kg [35 lbs]

Materials of Construction

• Housing: Glass fibre reinforced epoxy, drinking water quality
• Potting: EP resin
• Membrane Material: Polyvinylidene fluoride
• Membrane Carrier: Composite polyester woven/non woven

Membrane Characteristics

• High performance and a very good anti-fouling behaviour
• To avoid mechanical damage, do not subject the membrane module or element to sudden temperature changes, particularly decreasings.
• Do not exceed 70 °C process temperature.
• Bring the module or element back to ambient operating temperature slowly (typical value 1 °C/min). Failure to adhere to this guideline can result in irreparable damage.

Operating Specifications

• Max. feed pressure: 1250 kPa
• Max. permeate pressure: 1250 kPa
• Max. trans-membrane pressure: -20 ~ +500 kPa
• Max. temperature: 70 °C

Process Characteristics (water, 20°C)

• Hydraulic membrane diameter: 8.0 mm
• Crossflow flow rate (): 10.0 x v m³/h ( superficial velocity (v) in m/s)
• Pressure-drop across module (laminar flow) (): 0.5 x L0 x v kPa ( module length (L0) in m)
• Pressure-drop across module (turbulent flow) (): 2.1 x L0 x v¹·⁷⁵ kPa ( module length (L0) in m)

Chemical Resistance

General Solvent Resistance

• Acids, pH >2: +
• Bases, pH <11: +
• Organic esters, ketones, ethers: --
• Aliphatic alcohols: ++
• Aliphatic hydrocarbons: ++
• Halogenated hydrocarbons: ++
• Aromatic hydrocarbons: +
• Polar organic solvents: --
• Oils: ++
• Sodium Hypochlorite:
  • Typical 200 ppm, at ≤ 40 °C
  • Maximum 500 ppm
  • 250,000 ppm hours cumulative at 30 °C
  • Note: Since the resistance of the membrane to solvents strongly depends on the actual process conditions, the indications given should only be considered as guidelines.

Cleaning Chemical Resistance

It is recommended to keep the pH between 1 and 11 and not to exceed a temperature of 40 °C during cleaning and/or disinfection.

• 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

Storage

• New membrane modules can be stored as supplied.
• 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 membrane modules to freezing temperatures.
• After use, UF membranes need to be stored wet at all times.
• To avoid biological growth during shutdowns or storage, wet membranes should be treated with a compatible biocide. The membrane is compatible with many common disinfecting agents or biocidal preservatives.
• For short-term shutdowns, a daily flush with permeate quality water containing up to 2.0 ppm free available chlorine for 30 to 60 minutes may be adequate for bacteria control.
• In case of long-term storage, membranes should be cleaned before the disinfection step is carried out.
• For disinfection, a 1% sodium metabisulfite solution can be used.
• In either situation, modules should be stored hydraulically filled.

---

Disclaimer: This summary is based on extracted text and may miss figures, footnotes, or the latest revisions. Contractual data must always match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet