X-Flow-Compact-27G

Summary

Product identification

The product is an X-FLOW COMPACT 27G ULTRAFILTRATION MEMBRANE.

• Article Code: 7781KPC99R
• Type: Ultrafiltration membrane

Applications

• Effluent treatment
• Membrane bioreactor

Membrane Characteristics

• Hydrophilic tubular polyvinylidene fluoride membrane cast on a composite polyester/polyolefine carrier.
• Structure: Asymmetric
• Mean pore size: 30 nm
• High performance and very good anti-fouling behavior.

Mechanical / hydraulic

Dimensions

• Hydraulic membrane diameter: 8.0 mm
• Membrane area: 27 m²
• Feed connection D0: 220.0 mm
• Module length L0: 3000 mm (±1)
• Saddle diameter D1: 250 mm
• Module diameter D2: 206.6 mm
• Permeate connection d0: 73.0 mm
• Permeate length I0: 40 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]

Operating limits

• Max. feed pressure: 1250 kPa
• Max. permeate pressure: 1250 kPa
• Feed-permeate differential pressure: -20 ~ +500 kPa
• Max. temperature: 70 °C
• To avoid mechanical damage, do not subject the membrane module or element to sudden temperature changes, particularly decreases. Do not exceed 70 °C process temperature. Bring the module or element back to ambient operating temperature slowly (typical value 1 °C/min).

Materials of Construction

• Housing: Glass fiber reinforced epoxy, 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)
• Pressure-drop across module (laminar flow) ():** 0.5 x L0 x v (kPa)
• Pressure-drop across module (turbulent flow) ():** 2.1 x L0 x v¹·⁷⁵ (kPa)

(*) superficial velocity (v) in m/s [ft/s] (**) module length (L0) in m

Chemical resistance

The indications below should only be considered as guidelines, as resistance to solvents depends on actual process conditions.

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 Depending on the feed solution, the following cleaning agents can be chosen:

• NaOCl (active chlorine): 500 ppm max.
  • Typical: 200 ppm, at ≤ 40 °C
  • Maximum: 500 ppm
  • Cumulative: 250,000 ppm hours 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

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.
• Storage temperature: between 0 and 40 °C.
• Membrane modules should not be subjected to any freezing temperatures.
• After use, UF 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.
• 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.

---

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

Official datasheet (PDF)

PDF datasheet