Instruction manual Spira-Cel

Summary

Product identification

SPIRA-CEL® spiral wound modules are designed for industrial applications, utilizing high-quality NADIR® membranes that cover nano-, ultra-, and microfiltration spectrums.

Module Types & Specifications:

• G (industry GRP shell): Robust standard modules.
• O (industry hard shell): Extremely stable at high temperatures and extreme pH values.
• W (industry standard): Available only as 2.4″ x 40″ modules.
• Specification Y: Standard (with GRP shell), or extremely pH- and temperature resistant for acidic applications (with hard shell).
• Specification X: Extremely pH- and temperature resistant for alkaline applications (with hard shell).

Membrane Materials & Properties:

• Permanently hydrophilic polyethersulfone (PES)/polysulfone (PS): Hydrophilic (low fouling potential), high chemical stability.
  • pH Range: 0 – 14 (PES), 1 – 14 (PS)
  • Max. Temperature: 95°C
• Regenerated cellulose (RC): Extremely hydrophilic (low fouling potential), high solvent resistance.
  • pH Range: 1 – 11
  • Max. Temperature: 55°C
• Poly(vinylidene fluoride) (PVDF): High oxidation resistance.
  • pH Range: 2 – 11
  • Max. Temperature: 95°C

NADIR® Ultrafiltration Membranes:

• PES: UP005 (5 kDa), UP010 (10 kDa), UP020 (20 kDa), UH030 (30 kDa), UH050 (50 kDa), UP150 (150 kDa)
• PS: US100 (100 kDa)
• RC: UC030 (30 kDa), UC100 (100 kDa)
• PVDF: UV200 (200 kDa)
• Pure water flux (nominal, test conditions vary): See the official PDF for exact tabulated values.

Feed Spacer Dimensions: Spacer dimensions between 31 and 80 mil allow adaptation to liquid viscosity and solids content.

• B: 31 mil Diamant
• C: 44 mil Diamant
• D: 44 mil Parallel
• F: 80 mil Diamant
• G: 80 mil Parallel

Operating limits

• Storage Temperature: 5 °C to 30 °C (for originally packed modules). Must never be stored below 5 °C.
• Storage Humidity: < 70% (for originally packed modules).
• Maximum Permeate Pressure: 0.35 bar (during start-up). Permeate outflow must always be unpressurized.
• Concentrate Pressure (downstream end): Must always exceed 0.7 bar during start-up.
• Maximum Operating Temperature:
  • PES/PS membranes: 95°C
  • RC membranes: 55°C
  • PVDF membranes: 95°C
• pH Range:
  • PES membranes: 0 – 14
  • PS membranes: 1 – 14
  • RC membranes: 1 – 11
  • PVDF membranes: 2 – 11
• Prohibited Operations:
  • Backflushing is not allowed.
  • Operation in dead-end mode is not allowed.
  • Water hammers, sudden jumps in solid content, strong decrease of flow rate, and temperature shocks are to be inhibited.
• Maximum Pressure Loss: Refer to the module data sheet for specific values and temperature dependency. Exceeding this limit can deteriorate the module.

Feed water

• Prefiltration: Essential for maintaining high permeate fluxes. Specific prefiltration data is provided in module data sheets.
• Rinsing and Cleaning Water Quality: Water used for rinsing and preparing cleaning/preservation solutions must be free of suspended particles (especially rust, algae, and microbiological growth).
  • Limit values for water ingredients:
    • Turbidity: < 1 NTU
    • Particle size: < 10 µm
    • Iron and magnesium: < 0.3 mg/l
    • Silicon: < 10 mg/l
    • Aluminium: < 0.5 mg/l
    • Calcium: < 10 mg/l
    • Magnesium: < 0.2 mg/l
    • Hardness: < 300 mg/l (16 °dt)
• Recommended Water Source: Deionized water or permeate from a reverse osmosis plant. Condensate is not generally recommended due to potential contamination.

Product water

• The permeate outflow must always be unpressurized.
• The permeate pressure must never exceed the feed side pressure.

Mechanical / hydraulic

• Module Dimensions (Outer Diameter x Length including ATDs):
  • Type 2440 (2.4″ x 40″):
    • Outer Diameter: 62.0 +0.0/-2.0 mm
    • Length: 965 ± 1.5 mm
    • Permeate Tube Outer Diameter: 19.05 +0.1/-0.0 mm
    • Note: 2440 modules are only available with 44 mil spacer.
  • Type 4040 (4″ x 40″):
    • Outer Diameter: 101.5 +0.0/-2.0 mm
    • Length: 1016 +1.0/-3.0 mm
    • Permeate Tube Inner Diameter: 16 ± 0.1 mm
  • Type 8040 (8″ x 40″):
    • Outer Diameter: 200.5 +0.0/-2.0 mm
    • Length: 1016 ± +1.0/-3.0 mm
    • Permeate Tube Inner Diameter: 30.15 ± 0.1 mm
• Materials: ATDs and permeate tubes are made of polysulfone.
• Standard Scope of Delivery: Includes 2 plastic ATDs (connected to the module) and 1 seal per module.
• Auxiliary Equipment (Not Included): Interconnectors, pressure vessels with permeate and blank adaptors must be ordered separately.

Cleaning and Preservation

• Membrane Preservation (for downtime > 24 hours): After rinsing and cleaning, modules must be preserved to protect against bacterial fouling.
  • Preservation Solutions:
    • 1.0 % sodium hydrogensulfite (NaHSO₃)
    • 0.5% formaldehyde (CH₂O)
  • Preservation solution should be exchanged every month. Modules must always be kept wet; drying leads to irreversible damage.
• Cleaning Process Parameters:
  • Pressure at feed inlet: 1.5 - 2.0 bar
  • Pressure at concentrate outlet: 0.7 - 0.9 bar
  • Permeate must be extracted at zero pressure; outlets must remain open.
  • Cleaning is carried out with high flow rates and low transmembrane pressure.
  • Warm cleaning agents (30 – 50 °C) are more effective, but temperature must not exceed the maximum operation temperature.
• Recommended Cleaning Strategies: The document provides a table of recommended cleaning agents (P3-ultrasil® and P3-Oxonia® products from ECOLAB) with specific pH values and temperatures for various application areas and module types. See the official PDF for exact tabulated values and specific recommendations/restrictions for each module type.

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

Official datasheet (PDF)

Lenntech datasheet mirror