TFC SW MegaMagnum / 18061 SW 3050

Summary

Product identification

• Product Description: High Rejection, Seawater, RO Element
• Membrane Chemistry: Proprietary TFC® polyamide
• Membrane Type: TFC®-SW membrane
• Construction: Spiral wound with helical fiberglass outerwrap
• Applications: Seawater desalination

Specifications

• Model: 18061-SW-3050
• Permeate Flow: 53,000 gpd (200 m³/d)
• Chloride Rejection: 99.75 percent
• Membrane Area: 3,050 ft² (283 m²)
• Spacer: 28 mil (0.7 mm)

Test Conditions: 32,800 mg/l NaCl solution (isosmotic to ASTM standard seawater) at 800 psi (5,520 kPa) applied pressure, 11% recovery, 77°F (25°C) and pH 7.5.

Performance Notes

• Performance specifications are nominal values. Individual element permeate flows may vary ±15% from the values shown.
• Minimum rejection is 99.5% at the stated test conditions.
• System performance should be predicted using KMS ROPRO® software.
• System operating data should be normalized and key performance parameters tracked using KMS NORMPRO® software.

Operating limits

• Typical Operating Pressure: 750-950 psi (5,175 – 6,555 kPa)
• Maximum Operating Pressure: 1,200 psi (8,275 kPa)
• Maximum Operating Temperature: 113°F (45°C)
• Maximum Cleaning Temperature: 113°F (45°C)
• Maximum Continuous Free Chlorine: <0.1 mg/l (Exposure of TFC-SW membrane to free chlorine or other oxidizing agents is not recommended.)
• Allowable pH – Continuous Operation: 4 – 11
• Allowable pH – Short Term Cleaning: 2.5 – 11 (Limit exposure to the extended pH range to 4 hours, once per month.)
• Maximum Differential Pressure per Element: 12 psi (82.7 kPa)
• Maximum Differential Pressure per Vessel: 60 psi (414 kPa)
• Permeate Pressure: Should not exceed feed-concentrate pressure by more than 5 psi (34 kPa) at any time (on-line, off-line and during transition).
• Maximum Feed Turbidity: 1 NTU (Feedwater with turbidity greater than 0.2 NTU generally results in frequent cleanings.)
• Maximum Feed SDI (15 minute test): 5.0
• Recovery: Maximum recovery is site and application specific. Single element recovery is approximately 11% for MegaMagnum® elements. Recovery limits should be determined using KMS ROPRO program.

Chemical Tolerance

• Chlorine/Oxidizing Agents: Exposure of TFC-SW membrane to free chlorine or other oxidizing agents is not recommended. The TFC-SW membrane has a free chlorine tolerance of approximately 1,000 ppm-hours based on testing at 77°F (25°C), pH 8. This tolerance may be significantly reduced if catalyzing metals such as iron are present or if the pH and/or temperature are different. Sodium metabisulfite (without catalysts such as cobalt) is the preferred reducing agent. The TFC-SW membrane has a chloramine tolerance of approximately 60,000 ppm-hours in the absence of free chlorine based on testing at 77°F (25°C), pH 8.
• Cationic (Positively Charged) Polymers and Surfactants: Exposure to these chemicals during operation or cleaning is not recommended, as it may cause irreversible fouling.
• Lubricants: For element loading, use only approved silicone lubricant, water, or glycerin to lubricate O-rings and brine seals. The use of petroleum-based lubricants or vegetable-based oils may damage the element and void the warranty.

Mechanical / hydraulic

• Model: 18061-SW-3050
• A: 61 inches (1,549 mm)
• B: 18 inches (457 mm)
• Weight: 250 lbs (113.0 kg)

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

Official datasheet (PDF)

PDF datasheet