X-Flow-Compact-75G-Helix

Summary

Product identification

• Product Line: X-FLOW COMPACT 75G HELIX
• Membrane Type: ULTRAFILTRATION MEMBRANE
• Description: 12 INCH 5.2 mm Helix Compact 75G
• Article Code: 8181KQB99O

Element Specifications

• Hydraulic membrane diameter: 5.2 mm
• Membrane area: 75 m²
• Module length: 3070 mm
• Permeate position: 290 mm
• Permeate length: 250 mm
• Feed connection ID: 300 mm
• Permeate connection ID: 65 mm
• Note: For connection specifications, check the corresponding connection configuration data sheet.

Mechanical / Hydraulic

• Crossflow flow rate (*): 121.6 x v m³/h (where superficial velocity (v) in m/s)
• Pressure-drop across module (laminar flow) (**): 1.2 x L₀ x v kPa (where module length (L₀) in m)
• Pressure-drop across module (turbulent flow) (**): 3.6 x L₀ x v¹·⁷⁵ kPa (where module length (L₀) in m)

Operating limits

• Max. feed pressure: 600 kPa (at 40 °C)
• Max. permeate pressure: 600 kPa (at 50 °C)
• Feed-permeate differential pressure: -100 ~ +250 kPa
• Max. temp: 50 °C
• Also listed: -50 ~ +250 kPa differential pressure
• Final maximum operating limits are determined by the lowest values of the membrane and element pressure and temperature specifications.
• Do not exceed 50 °C process temperature.
• Bring the module or element back to ambient operating temperature slowly (typical value 1 °C/min) to avoid mechanical damage.

Membrane Characteristics

• Hydrophilic tubular polyvinylidene fluoride membrane cast on a polyester carrier.
• The Helix structure of the membrane surface enhances turbulence and reduces membrane fouling.
• 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.

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

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 only)

• 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

• 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.
• More concentrated cleaning solutions can be tried if standard techniques fail, but X-Flow recommendations should be sought, and no warranty is given on efficiency or membrane performance after such attempts.

Storage

• New Modules:
  • Store as supplied in original packaging.
  • Contain an aqueous preservation solution of glycerine (20wt%) and sodium metabisulfite (1wt%).
  • Store in a dry, normally ventilated place, away from sources of heat, ignition, and direct sunlight.
  • Store between 0 and 40 °C.
  • Should not be subjected to any freezing temperatures.
  • Shelf life is a maximum of 6 months for unused modules in unopened packaging under correct storage conditions after transfer of ownership.
• After Use:
  • UF membrane modules need to be stored wet at all times.
  • To avoid biological growth, wet membranes can be treated with a compatible biocide.
  • Short-term shutdowns (1 - 7 days): A daily backwash with UF permeate quality water for 30 seconds at 250 (mh) should be adequate for bacteria control. Before shutdown, modules must be cleaned by a standard Chemical Enhanced Backwash (CEB).
  • Long-term storage (>7 days): Membranes should be disinfected. Clean using a CEB before disinfection. For disinfection, a 0.5% sodium metabisulfite solution can be used.
  • In both short and long-term storage situations, modules should remain filled with storage solution.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original PDF datasheet. For contractual data and complete information, the official OEM PDF revision used on the project must be consulted.

Official datasheet (PDF)

PDF datasheet