Seawater desalination membranes

Membranes intended for seawater treatment, subject to feed data, design conditions and pretreatment.

Quick Summary

The Seawater series is intended for seawater desalination and high-salinity feed water. Desalination system design requires a water analysis, suitable pretreatment and an engineering review, and suitability is confirmed only after Nimbus reviews the site data.

Suitable application

Reviewed for desalination systems fed by seawater with high salt concentration.

Selection conditions

Fit is determined by feed concentration, water temperature and engineering design conditions.

Seawater Series Models

Seawater Series membranes are intended for desalination and seawater treatment applications. Model selection depends on water quality, design requirements and operating conditions.

NIM-SW-8040-HF

Active Membrane Area

Active Membrane Area: 440 ft² (40.9 m²)

Operating Limits

Max Operating Pressure: 1,200 psi (83 bar)
Max Operating Temperature: 45°C (113°F)
Continuous Operating pH: 2.0–11.0
CIP pH Range: 1.0–12.0
Maximum Feed Water Silt Density Index: SDI15 < 5.0
Free Chlorine Tolerance: < 0.1 ppm
Max Pressure Drop per Element: 15 psi (1.0 bar)

Dimensions

Length: 40.0 in (1,016 mm)
Outer Diameter: 7.9 in (201 mm)
Central Tube Diameter: 1.125 in (28.6 mm)

Standard Test Conditions

Test Pressure: 800 psi
Salt Concentration: 32000 ppm NaCl
Test Temperature: 25°C
Recovery: 8%
Test pH: 7.5-8.0

Values are measured at the stated test conditions and are not a commitment to field performance. Engineering review is required for every application.

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NIM-SW-8040-FR

Seawater Membrane

8040 Format

Nominal permeate flow: 9,000 GPD (34.1 m³/d)
Nominal salt rejection: 99.85%
Active Membrane Area: 380–400 ft²
Max Operating Pressure: 1,200 psi (83 bar)

Nominal flow and rejection at the model’s test conditions; not a commitment to field performance.

Full Specs

Active Membrane Area

Active Membrane Area: 380–400 ft²

Operating Limits

Max Operating Pressure: 1,200 psi (83 bar)
Max Operating Temperature: 45°C (113°F)
Continuous Operating pH: 2.0–11.0
CIP pH Range: 1.0–12.0
Maximum Feed Water Silt Density Index: SDI15 < 5.0
Free Chlorine Tolerance: < 0.1 ppm
Max Pressure Drop per Element: 15 psi (1.0 bar)

Dimensions

Length: 40.0 in (1,016 mm)
Outer Diameter: 7.9 in (201 mm)
Central Tube Diameter: 1.125 in (28.6 mm)

Standard Test Conditions

Test Pressure: 800 psi
Salt Concentration: 32000 ppm NaCl
Test Temperature: 25°C
Recovery: 8%
Test pH: 7.5-8.0

Values are measured at the stated test conditions and are not a commitment to field performance. Engineering review is required for every application.

Request a Quote

NIM-SW-8040-SHF

Seawater Membrane

8040 Format

Nominal permeate flow: 10,000 GPD (37.9 m³/d)
Nominal salt rejection: 99.75%
Active Membrane Area: 440 ft² (40.9 m²)
Max Operating Pressure: 1,200 psi (83 bar)

Nominal flow and rejection at the model’s test conditions; not a commitment to field performance.

Full Specs

Active Membrane Area

Active Membrane Area: 440 ft² (40.9 m²)

Operating Limits

Max Operating Pressure: 1,200 psi (83 bar)
Max Operating Temperature: 45°C (113°F)
Continuous Operating pH: 2.0–11.0
CIP pH Range: 1.0–12.0
Maximum Feed Water Silt Density Index: SDI15 < 5.0
Free Chlorine Tolerance: < 0.1 ppm
Max Pressure Drop per Element: 15 psi (1.0 bar)

Dimensions

Length: 40.0 in (1,016 mm)
Outer Diameter: 7.9 in (201 mm)
Central Tube Diameter: 1.125 in (28.6 mm)

Standard Test Conditions

Test Pressure: 800 psi
Salt Concentration: 32000 ppm NaCl
Test Temperature: 25°C
Recovery: 8%
Test pH: 7.5-8.0

Values are measured at the stated test conditions and are not a commitment to field performance. Engineering review is required for every application.

Request a Quote

NIM-SW-4040-HF

Seawater Membrane

4040 Format

Nominal permeate flow: 2,000 GPD (7.6 m³/d)
Nominal salt rejection: 99.8%
Active Membrane Area: 85–90 ft² (7.9–8.4 m²)
Max Operating Pressure: 1,200 psi (83 bar)

Nominal flow and rejection at the model’s test conditions; not a commitment to field performance.

Full Specs

Active Membrane Area

Active Membrane Area: 85–90 ft² (7.9–8.4 m²)

Operating Limits

Max Operating Pressure: 1,200 psi (83 bar)
Max Operating Temperature: 45°C (113°F)
Continuous Operating pH: 2.0–11.0
CIP pH Range: 1.0–12.0
Maximum Feed Water Silt Density Index: SDI15 < 5.0
Free Chlorine Tolerance: < 0.1 ppm
Max Pressure Drop per Element: 15 psi (1.0 bar)

Dimensions

Length: 40.0 in (1,016 mm)
Outer Diameter: 3.9 in (99 mm)
Central Tube Diameter: 0.75 in (19.0 mm)

Standard Test Conditions

Test Pressure: 800 psi
Salt Concentration: 32000 ppm NaCl
Test Temperature: 25°C
Recovery: 8%
Test pH: 7.5-8.0

Values are measured at the stated test conditions and are not a commitment to field performance. Engineering review is required for every application.

Request a Quote

Seawater Membrane Solutions

This category supports desalination and high-salinity water treatment applications.

Check a Nimbus Alternative

Selecting a water-treatment solution is an engineering and operational process. It begins with the water source, composition, variation over time, required flow, target quality, operating hours, site constraints and maintenance approach. A technology name alone is not sufficient to establish suitability.

Website information is general and is not a quotation, binding specification, fit approval or engineering approval. Scope, equipment, performance and conditions will be determined only after data review and an approved Nimbus proposal.