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Sea Water RO Membrane

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Sea Water RO Membrane Elements SW-8040-400HR

Sea Water RO Membrane Elements SW-8040-400HR is a high-performance solution tailored for seawater and high-salt concentration raw water treatment, boasting three core competitive advantages that set it apart. First, it delivers the highest boron rejection—a key feature that helps customers easily meet the strict drinking water standards set by the World Health Organization (WHO) and other global regulatory bodies, ensuring the produced water is safe and compliant for direct use. Second, it maintains stable high performance throughout its entire operating lifetime, and unlike many competitive products, it achieves this without relying on oxidative post-treatments—this not only simplifies operation processes but also avoids potential damage to membrane materials from oxidants, extending service life while reducing maintenance complexity. Third, it adopts automated, precision fabrication with a greater number of shorter membrane leaves: this structural design effectively reduces the overall impact of fouling (a common issue in high-salt water treatment), keeps membrane flux stable, and maximizes long-term treatment efficiency. Ideal for seawater desalination projects and high-salt raw water treatment scenarios, it balances compliance, durability, and efficiency to meet high-demand water purification needs.

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Category Introduction

The Sea Water RO Membrane series is suitable for desalination and deep treatment of seawater and high-concentration brackish water.
Delivering ultra-high salt rejection rates, they deliver optimal long-term economic performance for desalination systems.
The optimized 34-mil inlet flow channel reduces pressure drop and enhances the membrane element's resistance to fouling and cleaning.
They are widely used in seawater desalination, high-concentration brackish water desalination, boiler feed water, papermaking, textile printing and dyeing, and material concentration.

Product Information

Model Stable Rejection  Min Rejection Permeate  Flow Effective Membrane Area Spacer Thickness
(%) (%) GPD(m³/d) ft2(m2) (mil)
SW-8040-400HR 99.8 99.7 7500(28.4) 400(37.2) 34
Testing Conditions Operating pressure 800 psi(5.52 MPa)
Test solution temperature 25 ℃
Test solution concentration (NaCl) 32000 ppm
PH value  7-8
Recovery rate of singa le membrane element 8%
Flow range of a single membrane element ±15%
Operating Conditions & Limits Maximum operating pressure 1200 psi(8.28 MPa)
Maximum temperature 45 ℃
Maximum feedwater flow Maximum feedwater flow: 8040-75gpm(17m3/h)
Maximum feedwater flow SDI15 5
Maximum concentration of free chlorine: <0.1ppm
Allowed pH range for chemical cleaning 2-11
Allowed pH range for feedwater in operation 1-13
Maximum pressure drop per element 15psi(0.1MPa)
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