X-Flow-Compact-33G

Summary

Product identification

The product is an X-flow COMPACT 33G Ultrafiltration Membrane.

• Article Code: 7781KPB99R

Operating limits

• Max. operating temperature: 60 °C
• Max. permeate pressure: 60 kPa (at 20-60 °C)
• Max. transmembrane pressure: -100 - +500 kPa (negative TMP correlates with backwash pressure)
• Max. feed pressure:
  • 800 kPa at 20 °C
  • 650 kPa at 30 °C
  • 550 kPa at 40 °C
  • 450 kPa at 50 °C
  • 380 kPa at 60 °C
• Process temperature: Do not exceed 70 °C. Bring module back to ambient operating temperature slowly (typical 3 °C/min) to avoid mechanical damage.

Mechanical / hydraulic

Dimensions

• Membrane diameter: 5.2 mm
• Membrane area: 33 m²
• Module length L0: 220.0 mm (±1)
• Saddle diameter D1: 3000 mm
• Module diameter D2: 208 mm
• Feed connection D0: 33 mm
• Permeate connection d0: 73.0 mm
• Permeate length I0: 165 mm (±1)
• Permeate position I1: 90 mm (±1)

Note: Groove dimensions are according to the dimensions specified by Grooved Coupling.

Weight Specifications

• Dry weight of membrane element: ca. 45 kg [100 lbs]
• Membrane element filled with water: ca. 110 kg [242 lbs]

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

Membrane Characteristics

• Hydrophilic tubular polyvinylidene fluoride membrane cast on a polyester carrier
• Structure asymmetric
• Mean pore size of 30 nm
• Developed for use in large-scale processes for water purification
• High performance and very good anti-fouling behaviour
• Membrane elements can be backflushed for efficient membrane cleaning, resulting in a higher average product flux.
• Backwash water should be free of particulates and of permeate quality or better.
• Backwash pumps should preferably be made of non-corroding materials (e.g., plastic or stainless steel). If compressed air is used, do not allow a two-phase air/water mixture to enter the element.

Process Characteristics (water, 20 °C)

• Hydraulic membrane diameter: 5.2 mm
• Crossflow flow rate (*): 53.5 x v [m³/h] (where v is superficial velocity in m/s)
• Pressure-drop across module (laminar flow) ()**: 1.2 x L0 x v [kPa] (where L0 is module length in m)
• Pressure-drop across module (turbulent flow) ()**: 3.6 x L0 x v^(1.75) [kPa] (where L0 is module length in m)

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

General Solvent Resistance

(Indications are guidelines, as resistance depends on actual process conditions)

• Acids, pH >2: Resistant
• Bases, pH <11: Resistant
• Organic esters, ketones, ethers: Not resistant
• Aliphatic alcohols: Highly resistant
• Aliphatic hydrocarbons: Highly resistant
• Halogenated hydrocarbons: Highly resistant
• Aromatic hydrocarbons: Resistant
• Polar organic solvents: Not resistant
• Oils: Highly resistant

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.
  • Typical: 200 ppm, at ≤ 40 °C at ≥ pH 10
  • Maximum: 500 ppm
  • Cumulative: 250,000 ppm hours at 30 °C; ≥ pH 10
• 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: Store as supplied in a dry, normally ventilated place, away from sources of heat, ignition, and direct sunlight. Store between 0 and 40 °C. Do not subject to freezing temperatures.
• After use: UF membranes must be stored wet at all times.
• Biological growth prevention:
  • 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.
  • Long-term storage: Membranes should be cleaned before 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 the provided text extract and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the official OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet