DOW FILMTEC™ HRLE-440i High Rejection, Low-Energy RO Element with iLEC Interlocking Endcaps
Featuring breakthrough membrane chemistry, the DOW FILMTEC HRLE-440i element delivers the same 99.5% nominal NaCl rejection as traditional brackish water elements but at 33% lower pressures. Lower energy requirements allow new reverse osmosis systems to be designed to use one third less energy and still deliver the same permeate quality compared with other BW elements. Existing low energy systems can be retrofitted to achieve lower permeate TDS than possible with previous low energy elements. The combination of low energy and high rejection is ideally suited for use in the second pass of seawater and high-purity applications.
DOW FILMTEC Brackish Water Reverse Osmosis 8" Elements can separate salts from water and are produced with an automated fabrication process that ensures precision, consistency, and reliability. They are ideal for use in large-scale industrial and municipal water treatment systems that produce greater than approximately 10 gpm (2300 L/h) of permeate. Our RO membranes build on a tradition of leadership in the thin-film composite membrane industry and meet today's challenges for higher rejection using less energy and resisting foulants in challenging waters.
HRLE-440i is iLEC interlocking style for direct connection of membranes in multi-element housings.
 
DOW FILMTEC HRLE-440i is FDA – 21 CFR 177.2550; Food and Drug Administration Compliant.
 
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Specifications for HRLE-440i
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FilmTec Product: |
HRLE-440i |
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FilmTec Part Number: |
347733 |
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Size (Approximate): |
8" Dia. x 40"L |
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Flow Rate: |
12,650 gpd (48 m³/d) |
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Applied Pressure: |
150 psig (10.3 bar) |
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Stabilized Salt Rejection: |
99.5% |
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Minimum Salt Rejection: |
99.3% |
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Stabilized Silica Rejection: |
99.8% |
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Stabilized Boron Rejection: |
68% |
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Stabilized Nitrate Rejection: |
97% |
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Stabilized Ammonium Rejection: |
97.5% |
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Stabilized Isopropyl Alcohol Rejection: |
94% |
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Active Surface Area: |
440 Sq. Ft. |
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Single Element Recovery: |
15% |
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End Style: |
iLEC Interclocking |
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Exterior: |
Hard Shell Fiberglass |
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Feed Spacer: |
28 mil |
Membrane Type:
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Advanced Polyamide Thin-Film Composite |
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Permeate flow and salt rejection based: 2,000 ppm NaCl feed stream, 77°F, 15% recovery, 225 psig.
Operating Limits for HRLE-440i
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Maximum Operating Temperature: |
113°F (45°C) |
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Maximum Operating Pressure: |
600 psig (41 bar) |
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Maximum Pressure Drop: |
15 psig (1 bar) |
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pH Range, Continuous Operation*: |
2-11 |
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pH Range, Short-Term Cleaning**: |
1-13 |
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Maximum Feed Silt Density Index: |
SDI 5 |
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Fere Clorine Tolerance***: |
<0.1ppm |
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*Maximum temperature for continuous operation above pH 10 is 95°F
**Refer to cleaning guidelines.
***Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure.
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