BW 4040 Membrane

99.6% Salt Rejection BW 4040 RO Membrane

The BW 4040 RO Membrane is a high-performance brackish water desalination membrane engineered to solve industrial water treatment pain points-high energy costs, frequent fouling, and inconsistent salt rejection. Built with Thin Film Nanocomposite (TFN) technology, it delivers 99.6% stabilized salt rejection (min. 99.3%) even in high-salinity environments (up to 10,000 ppm TDS), ensuring purified water meets strict industrial standards (e.g., boiler feed, food processing).

Designed for 2500 GPD (9.5m³/d) output at 225 psi operating pressure, it balances high flow with low energy consumption-reducing pump power costs by 15% vs. conventional TFC membranes. It's 4"×40" standard size fits most RO systems, eliminating retrofitting hassles, while anti-fouling TFN layers extend service life to 3-5 years (vs. 2-3 years for standard membranes), cutting replacement downtime.

Key Features

✅ 99.6% Salt Rejection (Guaranteed Water Quality)

• TFN Nanocomposite Layer: Removes 99.6% of dissolved salts (e.g., NaCl, Ca²⁺, Mg²⁺) and heavy metals (lead, arsenic), critical for industries like electronics (ultra-pure water) and pharmaceuticals (USP standards).
• Stable Performance: Maintains >99.3% rejection even with feedwater TDS fluctuations (3,000-10,000 ppm), avoiding costly post-treatment.

✅ Anti-Fouling & Long Lifespan (Reduce Maintenance Costs)

• Smooth TFN Surface: Resists scaling and organic fouling (e.g., bacteria, colloids) in industrial wastewater, extending cleaning intervals from 3 months to 6+ months.
• Robust Construction: Corrosion-resistant O-rings and integrated brine seals prevent leaks, reducing unplanned downtime (common with generic membranes).

✅ Energy-Efficient Design (Lower Operating Expenses)

• 225 psi Optimal Pressure: Achieves high flow (2500 GPD) at 30% lower pressure than competing membranes (e.g., 300 psi for similar models), resulting in significant pump energy cost savings.
• 15% Single Element Recovery: Maximizes water usage efficiency, minimizing wastewater discharge fees for factories.

✅ Drop-In Compatibility (No System Overhaul)

Standard 4" ×40" Size: Fits all 4040 RO membrane housings, eliminating costly system redesigns.
Easy Installation: Pre-assembled with interconnectors, ready to use out of the box-saves 1 hour of installation time per element.

Technical Specifications

FAQ

How does TFN technology differ from standard TFC membranes?

A: TFN (Thin Film Nanocomposite) adds nanoparticles to the membrane layer, improving salt rejection by 0.3-0.5% and fouling resistance by 50% vs. TFC-critical for high-salinity industrial water.

Can it handle high-silica feedwater (e.g., 200 ppm SiO₂)?

A: Yes, but we recommend pre-treatment with a silica-scavenging filter (e.g., activated alumina) to prevent scaling and extend membrane life.

What's the expected lifespan in industrial wastewater?

A: 3-4 years with proper pre-treatment (e.g., 5μm sediment filter + antiscalant dosing). In clean brackish water (low organics), the lifespan extends to 5 years.

Is it compatible with Dow/FilmTec 4040 membranes?

A: Yes, it's a direct replacement-same dimensions, flow rate, and pressure requirements. Many customers switch to reduce costs by 30% without performance loss.

What warranty is provided?

A: 3-year warranty covering defects in materials and workmanship. We also offer a 90-day performance guarantee (salt rejection <99.3% = free replacement).

Hot Tags: bw 4040 membrane, China bw 4040 membrane manufacturers, suppliers, factory, Sea Water Reverse Osmosis Membrane, ro membrane for advanced water filtration, ro membrane for cost-effective water filtration, ro membrane for large-scale water filtration, ro membrane for long-lasting water filtration, ro membrane for gauges ro membrane