FILMTEC HRLE-440

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

• Excellent rejection of silica, boron, nitrate and ammonium; supported by Dow’s modeling software

• Increased IPA rejection (IPA rejection is a common surrogate for TOC removal)

• Available dry for longer storage life and easier handling

• Membrane Type: Advanced 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)
• pH Range, Continuous Operation: 2 - 11
• pH Range, Short-Term Cleaning (30 min.): 1 - 13
• Maximum Feed Flow: 85 gpm (19 m3/hr)
• Maximum Feed Silt Density Index: SDI 5
• Free Chlorine Tolerance: < 0.1 ppm
• Maximum temperature for continuous operation above pH 10 is 95°F (35°C)
• Refer to Cleaning Guidelines in specification sheet 609-23010.
• 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 Water & Process Solutions recommends removing residual free chlorine by pretreatment prior to membrane exposure. Please refer to technical bulletin 609-22010 for more information.