DOW FilmTec™ LC LE PRO-4040 Water Treatment With Barcol Hardness Test Every 1.5 Meters At 25C Reverse Osmosis Membranes
Key Features
The DOW FilmTec™ LC LE PRO-4040 Reverse Osmosis Membranes deliver high-quality water at low pressure, even under harsh water conditions. These membranes utilize DuPont's innovative, proprietary technology for low-energy applications, offering significant benefits in both efficiency and performance:
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Industry-Leading Active Area (94 sqft): Ensures reduced fouling due to lower operating flux while still achieving higher flow rates.
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High Salt Rejection: Operates at low pressures in harsh water conditions, offering exceptional salt rejection.
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Effective Cleaning Performance: Features the widest cleaning pH range (1-13) and outstanding chemical tolerance, ensuring durability and reliability.
Key Applications
The LC LE PRO-4040 Reverse Osmosis Membranes are ideal for various light industrial applications, particularly those requiring high-quality permeate water. Typical uses include:
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Harsh Feed Water Conditions
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Drinking Water: Suitable for refilling stations, bottling plants, hotels, schools, and institutions.
Typical Properties
| Product Part Number | Dry Permeate Flow Rate (gpd / m³/d) | Min. Salt Rejection (%) | Stabilized Salt Rejection (%) |
|---|---|---|---|
| LC LE PRO-4040 | 2600 (9.8) | 99.0 | 99.5 |
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Test Conditions: 2000 ppm NaCl, 77°F (25°C), 15% recovery, pH 8, applied pressure 150 psig. Individual permeate flows may vary +/- 20%.
Operating and Cleaning Limits
The LC LE PRO-4040 Reverse Osmosis Membranes have the following operating and cleaning parameters:
| Property | Limit |
|---|---|
| Membrane Type | Polyamide Thin-Film Composite |
| Maximum Operating Temperature | 113°F (45°C) |
| Maximum Operating Pressure | 600 psig (41 bar) |
| Maximum Pressure Drop | 15 psig (1.0 bar) |
| Maximum Feed Flow Rate | 16 gpm (3.6 m³/h) |
| pH Range (Continuous Operation) | 2 - 11 |
| pH Range (Short-Term Cleaning) | 1 – 13 |
| Maximum Feed Silt Density Index (SDI) | 5 |
| Free Chlorine Concentration | < 0.1 ppm |
Note: Maximum temperature for continuous operation above pH 10 is 95°F (35°C). Refer to FilmTec™ Cleaning Guidelines for specific cleaning instructions.
General Information
To ensure the longevity and performance of the DOW FilmTec™ LC LE PRO-4040 Reverse Osmosis Membranes, please follow these operational guidelines:
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Keep elements moist at all times after initial wetting.
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For successful operation of Reverse Osmosis (RO) and Nanofiltration (NF) membrane systems, refer to FilmTec™ Reverse Osmosis / Nanofiltration Elements Operation Excellence and Limiting Conditions Tech Fact.
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To prevent biological growth during system shutdowns, immerse membrane elements in a preservative solution.
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Maximum pressure drop across an entire pressure vessel (housing) is 50 psi (3.4 bar).
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Avoid static permeate-side backpressure and discard permeate obtained from the first hour of operation.
Important Information
Proper start-up of the Reverse Osmosis Membranes is crucial for optimal performance. Follow the recommended procedures to prevent damage from overfeeding or hydraulic shock. The FilmTec™ Reverse Osmosis Membranes Technical Manual provides detailed guidance.
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System Start-Up: Ensure all system checks are completed before initiating start-up, including membrane pretreatment and instrument calibration.
Regulatory Note
This product may be subject to drinking water application restrictions in some countries. Please verify application status before use and sale.
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