SelRO 8038 MPS-34-ZYT

Summary

Product Identification

This is an 8-inch acid and caustic stable nanofiltration spiral element.

• Membrane Chemistry: Proprietary Composite Nanofiltration Membrane
• Membrane Type: MPS-34 pH stable Nanofiltration Membrane
• Molecular weight cut-off: 200 Daltons
• Construction: Sanitary spiral wound with net trimmable outerwrap
• Regulatory status: Compliant with US FDA CFR Title 21.
• Applications: Acid and caustic recovery, Product concentration
• Feed Spacer: 57 mil (1.4 mm)
• Membrane Characteristics: SelRO™ composite nanofiltration membrane in a spiral wound configuration, with superior pH and temperature stability.

Nominal Performance

Test Conditions: RO water at 440 psi (30 bar), 86°F (30°C). Feed solution for rejection tests is 3% glucose / 3% sucrose or 5% NaCl.

Mechanical / Hydraulic

• Nominal Dimensions (8038 MPS-34-ZYT / Part No. 0770251):
  • A: 38.0 inches (965 mm)
  • B: 7.9 inches (201.0 mm)
  • C: 1.125 inches (28.6 mm)
• Feed Flow Rate:
  • Minimum: 25 gpm (95 liter/min)
  • Maximum: 75 gpm (285 liter/min)
  • Actual feed flow rate is dependent upon system flux rate, feed characteristics, fouling tendency, and system design.
• Design Pressure Drop Per Element: 6 - 10 psi (0.4 - 0.7 bar)
• Design Pressure Drop Per Vessel: 30 - 50 psi (2.1 - 3.4 bar)

Operating Limits

• Operating Pressure:
  • Typical: 145 - 510 psi (10 - 35 bar)
  • Maximum: 510 psi (35 bar)
  • Actual operating pressure is dependent upon system flux rate, as well as feed, recovery, and temperature conditions.
• Permeate Pressure: Maximum allowed permeate pressure is 3 psi (0.2 bar).
• Differential Pressure:
  • Maximum per element: 10 psi (0.7 bar)
  • Maximum per vessel: 50 psi (3.5 bar)
• Operating Temperature Range: 40 - 158°F (5 - 70°C)
  • Refer to the "Operating Envelope for SelRO Elements" in the official document for guidelines when temperature is higher than 122°F (50°C).
• Cleaning Temperature Range: 95 - 158°F (35 - 70°C)
• Allowable pH - Continuous Operation: 0 - 14
• Allowable pH - Clean-In-Place (CIP): 0 - 14
• Water Quality for Cleaning and Diafiltration:
  • Turbidity: For best performance, maximum feed turbidity is 1 NTU.
• Chlorine and Chemical Exposure:
  • It is not recommended to expose the MPS-34 membrane to chlorine or other oxidants, as it may affect membrane performance.
  • Sodium metabisulfite (without catalysts such as cobalt) is the preferred chemical to eliminate free chlorine or other oxidizers in the feed.
  • It is not recommended to expose the MPS-34 membrane to organic solvents, such as alcohol, acetone, etc.
• Operating Envelope For SelRO Elements: It is important to follow pressure-temperature relationship guidelines to prevent irreversible compaction and performance deterioration. Key points from the guideline diagram include:
  • 510 psi, 122°F (35 bar, 50°C)
  • 360 psi, 140°F (25 bar, 60°C)
  • 220 psi, 158°F (15 bar, 70°C)
  • See the official PDF for the complete Operating Envelope diagram.

Cleaning and Handling

• Recommended Cleaning Materials: Depending on the nature of the feed, the following cleaning agents can be chosen:
  • 0.1-5% w/w sodium hydroxide at 122°F (50°C)
  • 0.2-1% w/w nitric or phosphoric acid at 122°F (50°C)
  • 0.1-0.5% w/w detergent mix KOCHKLEEN™ KLD-III at 122°F (50°C)
  • 0.5% anionic surfactant (such as SDS) at 122°F (50°C)
  • Consult KMS regarding the use of other cleaning materials.
• Lubricants: For element installation, use only water or glycerin to lubricate seals. The use of petroleum or vegetable-based oils or solvents may damage the element and will void any warranty.
• Storage Solution:
  • Short Term (up to two weeks): 0.25% w/w sodium metabisulfite.
  • Long Term: 0.7% w/w benzalkonium chloride.
  • Glycerin should not be used for storage of SelRO membranes.
  • The membrane element should not get dry. It should be stored in a sealed bag, at a temperature ranging from 36°F - 86°F (2°C - 30°C).

Typical Process Streams

• 5% HCl
• 37% HCl
• 15% H₂SO₄
• 15% Acetic acid
• 5% HNO₃
• 20% H₃PO₄
• 3% NaOH
• 20% NaOH
• 10% KOH

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Disclaimer: This summary is based on the provided text extract 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