BW Series Brackish Water RO Membrane

The BW (Brackish Water) Series membrane elements by Haitong Membrane Technology Co., Ltd. are advanced aromatic polyamide composite membranes designed for efficient brackish water desalination. Engineered for low-pressure operation, high water yield, and superior desalination performance, these membranes effectively remove soluble salts, TOC, and SiO₂, making them ideal for treating high-salinity and complex water sources.

Key Features & Benefits

✅ Exceptional Filtration Efficiency – Effectively removes dissolved salts, heavy metals, colloids, microorganisms, and organic matter, ensuring pure and safe water.
✅ High Recovery Rate – Optimized design allows a recovery rate exceeding 90%, maximizing efficiency while reducing waste.
✅ Superior Anti-Fouling Properties – Wider water channels and uniform flow distribution prevent contamination and enhance cleaning efficiency.
✅ Long-Term Stability & Durability – Resistant to pressure densification, wear, chemical degradation, and microbial attack, ensuring a longer lifespan.
✅ Cost-Effective Maintenance – Can be cleaned with affordable and effective common chemicals, significantly reducing operational costs.
✅ Versatile Applications – Ideal for power plants, petrochemical industries, steel production, electronics, pharmaceuticals, food & beverage, municipal water treatment, and environmental protection.

Advanced Performance

• Optimized membrane design enhances water flux uniformity, reducing fouling and improving system longevity.
• High-stability desalination rate outperforms other membrane elements over long-term operation.
• Reliable and cost-efficient water treatment solution with low maintenance requirements.

Haitong BW series membranes ensure high-efficiency, trouble-free water treatment systems with minimal operational costs, making them the preferred choice for industries requiring large-scale pure water solutions.

Product Water Output and Desalination Rate

a. The product water output and desalination rate are based on the following test conditions: 2000 ppm softened tap water, water temperature at 25°C, pH 7.5, a single membrane recovery rate of 15%, and the rated application test pressure mentioned above.

b. The product water output of an individual membrane element may vary by ±15%.

Important Notes:

1. General Information

   • The BW-8040 industrial membrane is designed for use in pressure vessels with a nominal inner diameter of 8.0 inches (203mm).

2. Key Operating Guidelines

   • Proper system startup is crucial to prevent membrane damage caused by excessive feed water flow or hydraulic shock.
   • Following the correct startup procedure ensures that operating parameters align with design specifications, maintaining optimal water quality and quantity.
   • Before the initial system startup, the following preparations should be completed:
     • Pre-treatment system commissioning
     • Membrane element installation
     • Instrument calibration
     • System inspection

3. Startup Procedures

   • To prevent potential membrane damage during startup, shutdown, cleaning, or other processes, sudden pressure changes or fluctuations in crossflow rate should be avoided.
   • It is recommended to follow this gradual startup procedure:
     1. Increase feed water pressure gradually over 30 to 60 seconds.
     2. Increase crossflow velocity gradually to the designed flow rate within 15 to 20 seconds.
     3. Discard the first hour of produced water to ensure optimal system performance.

General Operating Guidelines

✅ Keep Membranes Moist – Once wetted, membrane elements must always remain hydrated.
✅ Warranty Conditions – The limited warranty is void if operating limits and guidelines are not strictly followed.
✅ Long-Term Storage – To prevent microbial growth, membranes should be stored in a preservation solution containing 1.5% (by weight) sodium bisulfite (food-grade).
✅ Chemical Compatibility – Users are responsible for ensuring that all chemicals and lubricants used are compatible with the membrane elements.
✅ Pressure Limitations – The maximum allowable pressure drop per pressure vessel is 50 psi (3.4 bar).
✅ Prevent Backpressure – Backpressure on the product water side must always be avoided.

Note: The use of this product alone does not guarantee the effective removal of cysts and pathogens. The efficacy of pathogen removal depends on the overall system design and maintenance.

🔹 For custom reverse osmosis membranes, please contact us for tailored solutions.

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