Eco 400i

Summary

Product Identification

DuPont FILMTEC™ ECO elements are Polyamide Thin-Film Composite reverse osmosis (RO) elements designed for industrial water needs. They offer exceptional rejection and flow performance.

Product specifications:

Permeate flow and salt (NaCl) rejection are based on the following standard test conditions:

• 2,000 ppm NaCl
• 150 psi (10.3 bar)
• 77°F (25°C)
• pH 8
• 15% recovery

Notes:

• Flow rates for individual elements may vary but will be no more than +/- 15%.
• Active area is guaranteed +/-3%.

Operating Limits

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C)
  • Maximum temperature for continuous operation above pH 10 is 95°F (35°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 Silt Density Index: SDI 5
• Free Chlorine Tolerance: <0.1 ppm
  • Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Dow Water & Process Solutions recommends removing residual free chlorine by pretreatment prior to membrane exposure.

Mechanical / Hydraulic

Dimensions for ECO-400i, ECO-440i elements:

• A: 40.0 inches (1,016 mm)
• B: 40.5 inches (1,029 mm)
• C: 7.9 inches (201 mm)
• D (ID): 1.125 inches (29 mm)

Notes:

• Element to fit nominal 8-inch (203 mm) I.D. pressure vessel.
• Individual elements with iLEC endcaps measure 40.5 inches (1,029 mm) in length (B). The net length (A) of the elements when connected is 40.0 inches (1,016 mm).
• Maximum pressure drops are 15 psi (1.0 bar) per element or 50 psi (3.4 bar) per multi-element pressure vessel (housing), whichever value is more limiting.

Operation Guidelines

• Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences.
• During start-up, a gradual change from a standstill to operating state is recommended:
  • Feed pressure should be increased gradually over a 30-60 second time frame.
  • Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
  • Permeate obtained from the first hour of operation should be discarded.
• Keep elements moist at all times after initial wetting.
• To control biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
• Avoid static permeate-side backpressure at all times.

Regulatory Note

These membranes may be subject to drinking water application restrictions in some countries; please check the application status before use and sale. The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet