X-Flow-Compact-33V

Summary

Product identification

The product is an ULTRAFILTRATION MEMBRANE, X-Flow Compact 33V, 8 inch with a 5.2 mm hydraulic membrane diameter.

• Article Code: 78C1KPB99S
• Membrane Material: Polyvinylidene fluoride (PVDF) cast on a composite polyester woven/non-woven carrier.
• Structure: Asymmetric
• Mean Pore Size: 30 nm

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

Element specifications

• Membrane area: 5.2 m²
• Dry weight of membrane element: ca. 45 kg [100 lbs]
• Membrane element filled with water: ca. 110 kg [242 lbs]

Materials of Construction

• Housing: PVC, drinking water quality
• Potting: EP resin
• Membrane: Polyvinylidene fluoride, with a composite polyester woven/non-woven carrier

Mechanical / hydraulic

Dimensions See the official PDF for exact tabulated values.

• Hydraulic membrane diameter: 33 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)

Operating limits

• Maximum temperature: 40 °C (process temperature)
• Maximum feed pressure:
  • 800 kPa at 20 °C
  • 650 kPa at 30 °C
  • 450 kPa at 40 °C
• Maximum permeate pressure:
  • 650 kPa at 20 °C
  • 550 kPa at 30 °C
  • 450 kPa at 40 °C
• Maximum transmembrane pressure (TMP): -100 ~ +500 kPa (negative TMP correlates with backwash pressure)

Hydraulic (Process Characteristics)

(water, 20 °C; where 'v' is superficial velocity in m/s, 'L0' is module length in m)

• Crossflow flow rate: 53.5 x v [m³/h]
• Pressure-drop across module (laminar flow): 1.2 x L0 x v [kPa]
• Pressure-drop across module (turbulent flow): 3.6 x L0 x v^(1.75) [kPa]

Chemical Resistance

General Solvent Resistance (indications are guidelines only, depending on actual process conditions)

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

Sodium Hypochlorite (NaOCl)

• Typical: 200 ppm, at ≤ 40 °C
• Maximum: 500 ppm
• Cumulative: 250,000 ppm hours at 30 °C

Cleaning Chemical Resistance The following cleaning agents can be used depending on the nature of the feed solution:

• 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

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 in a dry, normally ventilated place, away from heat, ignition, and direct sunlight, between 0 and 40 °C. They should not be subjected to freezing temperatures.

After use, UF membranes must be stored wet at all times. To avoid biological growth, wet membranes should be treated with a compatible biocide.

• 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 bacteria control.
• 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 present in the official PDF. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet