X-Flow-Compact-75G-non-coded

Summary

Product identification

• Product: Ultrafiltration Membrane
• Model: X-flow COMPACT 75G - NON CODED (8 INCH 5.2 MM Compact 75G - Non Coded)
• Article Code: 8181KQB99O

Membrane Characteristics

The membrane is a hydrophilic tubular polyvinylidene fluoride membrane cast on a polyester carrier with an asymmetric structure. It has a mean pore size of 30 nm and is developed for large-scale water purification processes, offering high performance and good anti-fouling behavior. Membrane elements can be backflushed for efficient cleaning, leading to higher average product flux.

To prevent mechanical damage, avoid sudden temperature changes, especially decreases. Do not exceed 70 °C process temperature. Bring the module back to ambient operating temperature slowly (typical 3 °C/min).

Applications

• Pre-treatment RO and NF
• Surface water treatment
• Drinking and process water production
• Recovery of sandfilter backwash water
• Effluent treatment
• Membrane bioreactor
• Wastewater treatment
• Treatment of oil-in-water emulsions

Operating limits

• Max. feed pressure: 1250 kPa
• Max. permeate pressure: 1250 kPa
• Max. trans-membrane pressure: -100..+500 kPa
• Max. temperature: 70 °C

Mechanical / Hydraulic

• Membrane diameter: 5.2 mm
• Membrane area: 33 m²
• Feed connection D0: 220.0 mm
• Module length L0 (±1): 3000 mm
• Saddle diameter D1: 250 mm
• Module diameter D2: 208 mm
• Permeate connection d0: 73.0 mm
• Permeate length I0 (±1): 165 mm
• Permeate position I1 (±1): 90 mm
• 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: Polyvinylidene fluoride with a composite polyester woven/non woven carrier

Process Characteristics (water, 20°C)

• Hydraulic membrane diameter: 5.2 mm
• 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)
• Pressure-drop across module (turbulent flow): 3.6 x L0 x v^1.75 (where L0 is module length in m)

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

Sodium Hypochlorite (Continuous Use / Disinfection)

• Typical: 200 ppm, at ≤ 40 °C at ≥ pH 10
• Maximum: 500 ppm
• Cumulative: 250,000 ppm hours at 30 °C; ≥ pH 10

General Solvent Resistance (Guidelines only)

• Acids, pH >2: +
• Bases, pH <11: +
• Organic esters, ketones, ethers: --
• Aliphatic alcohols: ++
• Aliphatic hydrocarbons: ++
• Halogenated hydrocarbons: ++
• Aromatic hydrocarbons: +
• Polar organic solvents: --
• Oils: ++

Backwash Recommendations

• 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 to pressurize backwash water, do not allow a two-phase air/water mixture to enter the element.

Storage

New membrane modules can be stored as supplied in a dry, normally ventilated place, away from sources of heat, ignition, and direct sunlight, between 0 and 40 °C. Membrane modules should not be subjected to freezing temperatures.

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

• 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.
• Long-term storage: Membranes should be cleaned before disinfection. A 1% sodium metabisulfite solution can be used for disinfection.

In either situation (short-term or long-term), modules should be stored hydraulically filled.

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

Official datasheet (PDF)

PDF datasheet