Instruction manual Spira-Cel

Summary

Product identification

SPIRA-CEL® spiral wound modules are designed for industrial applications and utilize high-quality NADIR® membranes. These membranes cover the full spectrum of nano-, ultra-, and microfiltration.

Membrane Materials and Properties

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

NADIR® Microfiltration Membranes

• MP005: Nominal pore size 0.05 µm, PES, Pure water flux > 800 l/(m²h)
• MV020: Nominal pore size 0.2 µm, PVDF, Pure water flux > 500 l/(m²h) (Test conditions: 0.7 bar, 20°C, stirred cell 700 RPM)

NADIR® Nanofiltration Membranes

• NP010: Nominal rejection 25–40% Na₂SO₄, PES, Pure water flux > 200 l/(m²h)
• NP030: Nominal rejection 80–95% Na₂SO₄, PES, Pure water flux > 40 l/(m²h)
  • (Test conditions for nanofiltration membranes: 40 bar, 20°C, stirred cell 700 RPM)

NADIR® Ultrafiltration Membranes

• UP005: MWCO 5 kDa, PES, Pure water flux > 30 l/(m²h)
• UP010: MWCO 10 kDa, PES, Pure water flux > 150 l/(m²h)
• UP020: MWCO 20 kDa, PES, Pure water flux > 200 l/(m²h)
• UH030: MWCO 30 kDa, PES, Pure water flux > 100 l/(m²h)
• UH050: MWCO 50 kDa, PES, Pure water flux > 250 l/(m²h)
• UP150: MWCO 150 kDa, PES, Pure water flux > 200 l/(m²h)
• US100: MWCO 100 kDa, PS, Pure water flux > 300 l/(m²h)
• UC030: MWCO 30 kDa, RC, Pure water flux > 300 l/(m²h)
• UC100: MWCO 100 kDa, RC, Pure water flux > 200 l/(m²h)
• UV200: MWCO 200 kDa, PVDF, Pure water flux > 350 l/(m²h)
  • (Test conditions for most UF membranes: 3 bar, 20°C, stirred cell 700 RPM. For UP150, UH030, UH050, UV200: 0.7 bar, 20°C, stirred cell 700 RPM)

Product Code Elements

• Module type:
  • G: Industry GRP shell (robust standard)
  • O: Industry hard shell (extremely stable at high temperatures and pH)
  • W: Industry standard (only available as 2.4" x 40" module)
• Specification:
  • Y: Robust standard (with G type); pH- and temperature resistant for acids (with O type)
  • X: pH- and temperature resistant for alkaline solutions (with O type)
• NADIR® membrane: Refers to the membranes listed above.
• Size:
  • 2440: 2.4" x 40"
  • 4040: 4" x 40"
  • 8040: 8" x 40"
• Feed spacer: (Allows adaptation to 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

• Permeate Pressure: Maximum allowed permeate pressure is 0.35 bar. The permeate outflow must always be unpressurized. Permeate pressure must never exceed feed side pressure.
• Concentrate Pressure: The concentrate pressure at the downstream end must always exceed 0.7 bar during start-up.
• Storage Temperature: 5 °C to 30 °C (never below 5 °C).
• Storage Humidity: < 70%.
• Module Operation:
  • Backflushing is not allowed and can cause deterioration.
  • Module must not be operated in dead-end mode.
  • Avoid water hammers, sudden changes in solid contents, strong decrease of flow rate, and temperature shocks.
  • Exceeding maximum pressure loss along the module can cause deterioration.

Feed water

Appropriate prefiltration is crucial for sustained high permeate fluxes. Data on appropriate prefiltration are given in the module data sheets.

Product water

During rinsing after installation, the concentrate and permeate produced are discarded. Additional cleaning after rinsing is recommended for applications with high purity demands.

Mechanical / hydraulic

Dimensions (Standard SPIRA-CEL® Spiral Wound Modules)

• Type 2440 (2.4" x 40")
  • Module outer diameter: 62.0 +0.0/-2.0 mm
  • Module length (including ATDs): 965 ± 1.5 mm
  • Permeate tube length: 1016 ± 0.5 mm
  • Permeate tube outer diameter: 19.05 +0.1/-0.0 mm
  • Permeate tube and ATD material: polysulfone
  • Only available with 44 mil spacer.
• Type 4040 (4" x 40")
  • Module outer diameter: 101.5 +0.0/-2.0 mm
  • Module length (including ATDs): 1016 +1.0/-3.0 mm
  • Permeate tube inner diameter: 16 ± 0.1 mm
  • Permeate tube and ATD material: polysulfone
• Type 8040 (8" x 40")
  • Module outer diameter: 200.5 +0.0/-2.0 mm
  • Module length (including ATDs): 1016 +1.0/-3.0 mm
  • Permeate tube inner diameter: 30.15 ± 0.1 mm
  • Permeate tube and ATD material: polysulfone

Spacer Dimensions Spacer dimensions between 31 and 80 mil are available to adapt modules to the viscosities and solids content of the liquids.

Pressure Definitions

• Pressure loss over the module (Δp): p_IN − p_OUT
• Transmembrane pressure (TMP): (p_IN + p_OUT)/2 − p_Perm

Cleaning Parameters

• Pressure at feed inlet: 1.5 – 2.0 bar
• Pressure at concentrate outlet: 0.7 – 0.9 bar

Water Quality for Rinsing and Cleaning

Water used for rinsing and preparing cleaning or preservation solutions must be free of suspended particles (e.g., rust, algae, microbiological growth) and meet the following limit values for ingredients:

• Turbidity: < 1 NTU
• Particle size: < 10 µm
• Iron and magnesium: < 0.3 mg/l
• Silicon: < 10 mg/l
• Aluminum: < 0.5 mg/l
• Calcium: < 10 mg/l
• Magnesium: < 0.2 mg/l
• Hardness: < 300 mg/l (16 °dt)

Deionized water and reverse osmosis permeate generally satisfy these requirements.

Cleaning Strategies and Preservation

Recommended Cleaning Agents Specific cleaning agents (e.g., P3-ultrasil®, P3-Oxonia® from ECOLAB) are recommended based on application area and module type. Cleaning pH values range from strongly basic (e.g., pH 12.6-12.9) to slightly acidic (e.g., pH 5.1). Cleaning temperatures are typically 30-50°C. See the official PDF for exact tabulated values and compatibility with specific module/membrane types.

Membrane Preservation For downtime between 24 hours and several months, modules must be rinsed, cleaned, and preserved to protect against bacterial fouling. Recommended preservation solutions:

• 1.0% sodium hydrogensulfite (NaHSO₃)
• 0.5% formaldehyde (CH₂O) The preservation solution should be exchanged monthly.

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

Official datasheet (PDF)

PDF datasheet