X-Flow-Compact-22V

Summary

Product identification

The product is the X-FLOW COMPACT 22V Ultrafiltration membrane, 8 inch with a 5.2 mm hydraulic membrane diameter. Article code: 8021KPB99S

Applications

• 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

Mechanical / hydraulic

• Hydraulic membrane diameter: 5.2 mm
• Membrane area: 22 m²
• Feed connection D0: 220.0 mm
• Module length L0: 2000 mm (±1)
• Saddle diameter D1: 240 mm
• Module diameter D2: 213 mm
• Permeate connection d0: 73.0 mm
• Permeate length l0: 165 mm (±1)
• Permeate position l1: 90 mm (±1)

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 ºC)

• Crossflow flow rate: 53.5 x v (where v is superficial velocity in m/s)
• Pressure-drop across module (laminar flow): 1.2 x L0 x v (where L0 is module length in m, v is superficial velocity in m/s)
• Pressure-drop across module (turbulent flow): 3.6 x L0 x v^(1.75) (where L0 is module length in m, v is superficial velocity in m/s)

Operating limits

• Max. feed pressure:
  • 800 kPa at 20 °C
  • 650 kPa at 20-40 °C
• Max. permeate pressure:
  • 550 kPa at 30 °C
  • 450 kPa at 40 °C
• Max. trans-membrane pressure: -100 ~ +500 kPa
• Max. temperature: 40 °C

Membrane Characteristics

• Hydrophilic tubular polyvinylidene fluoride membrane cast on a polyester carrier
• Structure: asymmetric
• Nominal pore size: 30 nm
• Developed for use in large-scale processes for water purification
• High performance and very good anti-fouling behavior
• Membrane elements can be backflushed for efficient membrane cleaning.

Chemical Resistance

General Solvent Resistance (guidelines)

• 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

• Sodium Hypochlorite (NaOCl):
  • Typical: 200 ppm, at ≤ 40 ºC
  • Maximum: 500 ppm
  • Cumulative: 250,000 ppm hours at 30 ºC
• H₂O₂: 1000 ppm max.
• NaOH: pH ≤ 11
• Nitric acid: pH ≥ 1
• Phosphoric acid: pH ≥ 1
• EDTA: pH ≤ 11
• Citric acid
• Enzymatic compounds
• Recommended cleaning pH range: 1 to 11
• Recommended cleaning temperature: not to exceed 40 °C

Storage

• New membrane modules can be stored as supplied.
• Store in a dry, normally ventilated place, away from heat sources, ignition, and direct sunlight.
• Storage temperature: between 0 and 40 °C.
• Do not subject to freezing temperatures.
• After use, UF membranes must be stored wet at all times.
• For short-term shutdowns, daily flush with permeate quality water containing up to 2.0 ppm free available chlorine for 30 to 60 minutes may be adequate.
• For long-term storage, membranes should be cleaned before disinfection. A 1% sodium metabisulfite solution can be used for disinfection.
• 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