X-Flow-Compact-27

Summary

Product identification

The X-FLOW COMPACT 27 is an ultrafiltration membrane element.

• Article Code: 7821KPC99R
• Membrane Type: Ultrafiltration membrane
• Membrane Material: Hydrophilic tubular polyvinylidene fluoride (PVDF) cast on a composite polyester/polyolefine carrier.
• Membrane Structure: Asymmetric
• Mean Pore Size: 30 nm

Applications

• Effluent treatment
• Membrane bioreactor

Operating limits

• Max. Feed Pressure: 800 kPa at 20 °C
• Max. Permeate Pressure: 650 kPa at 20 °C
• Max. Trans-membrane Pressure: -20 ~ +500 kPa
  • 60 kPa at 30 °C
  • 550 kPa at 40 °C
  • 450 kPa at 50 °C
  • 380 kPa at 60 °C
• Max. Temperature: 60 °C

Mechanical / hydraulic

• Module Dimensions:
  • Membrane area: 27 m²
  • Hydraulic membrane diameter: 8.0 mm
  • Feed connection D0: 220.0 mm
  • Module length L0: 3000 mm (±1)
  • Saddle diameter D1: 240 mm
  • Module diameter D2: 213 mm
  • Permeate connection d0: 73.0 mm
  • Permeate length I0: 165 mm (±1)
  • Permeate position I1: 90 mm (±1)
• Weight Specifications:
  • Dry weight of membrane element: ca. 40 kg [88 lbs]
  • Membrane element filled with water: ca. 100 kg [220 lbs]
• Materials of Construction:
  • Housing: PVC-C, drinking water quality
  • Potting: EP resin
  • Membrane: Material composed of polyvinylidene fluoride; Carrier is a composite polyester woven/non-woven
• Process Characteristics (water, 20 °C):
  • Hydraulic membrane diameter: 8.0 mm
  • Crossflow flow rate: 67.9 x v m³/h (where v is superficial velocity in m/s)
  • Pressure-drop across module (laminar flow): 0.5 x L0 x v kPa (where L0 is module length in m)
  • Pressure-drop across module (turbulent flow): 2.1 x L0 x v¹·⁷⁵ kPa (where L0 is module length in m)

Membrane characteristics

• Hydrophilic tubular polyvinylidene fluoride membrane cast on a composite polyester/polyolefine carrier.
• Structure asymmetric.
• Mean pore size of 30 nm.
• High performance and a very good anti-fouling behavior.
• To avoid mechanical damage, do not subject the membrane module or element to sudden temperature changes, particularly decreasings. Do not exceed 60 °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.

Cleaning / chemical resistance

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

• 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: ++
• Cleaning Chemical Resistance:
  • NaOCl (active chlorine):
    • Typical 200 ppm, at ≤ 40 °C
    • Maximum 500 ppm
    • 250,000 ppm hours cumulative at 30 °C
  • H₂O₂: 1000 ppm max.
  • NaOH: pH ≤ 11
  • Nitric acid: pH ≥ 1
  • Phosphoric acid: pH ≥ 1
  • EDTA: pH ≤ 11
  • Citric acid
  • Enzymatic compounds
• General Cleaning Recommendation: 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.

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. Should not be subjected to any freezing temperatures.
• After use (wet 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.
  • 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.

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

Official datasheet (PDF)

PDF datasheet