DOW FILMTEC™ SW30HR–380 Elements are a premium-grade seawater reverse osmosis element featuring both high active area and high salt rejection to offer the best long-term economics for seawater desalination systems.
• DOW FILMTEC SW30HR–380 delivers high boron rejection to help customers meet World Health Organization (WHO) and other drinking water standards.
• DOW FILMTEC SW30HR–380 elements deliver high performance over their operating lifetime without the use of oxidative post-treatments like many competitive products. This is one reason why DOW FILMTEC elements are more durable and may be cleaned more effectively over a wider pH range than other RO elements.
• Automated, precision fabrication with a greater number of shorter membrane leaves, reduces the overall effect of fouling and maximizes membrane efficiency.
Spiral-wound element with polyamide thin-film composite membrane.
40 in x 7.9 in
- Permeate flow and salt rejection based on the following test conditions: 32,000 ppm NaCl, 800 psi (5.5 MPa), 77°F (25°C), pH 8 and 8% recovery.
- Permeate flows for individual elements may vary ± 15%.
- Stabilized salt rejection is generally achieved within 24 – 48 hours of continuous use; depending upon feedwater characteristics and operating conditions.
- Sales specifications may vary as design revisions take place.
Operating and Cleaning Limits
Short-Term Cleaning (30 min.)
|113°F (45°C)||1,000 psig (69 bar)||15 psig (1.0 bar)||2 - 11||1 - 13||SDI 5||< 0.1 ppm|
• Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
• Refer to guidelines in “Cleaning Procedures” for more information.
• 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 “Dechlorinating Feedwater” for more information.
• Operation at pressures up to 1,200 psig (83 bar) is allowable under certain conditions. Consult your Dow representative for advice on applications above 1,000 psig (69 bar).