Puro FRLE

Summary

Product identification

PURO-FRLE strengthened RO membrane elements, part of the Helixfil Series.

Application

PURO-FRLE is an ultra-low pressure RO membrane designed for fouling resistance and low energy consumption. It is applicable to the treatment of industrial sewage with low salinity.

Typical applications include:

• Pure water production from surface water, such as lake water and river water.
• Desalination of reclaimed water, including industrial wastewater and RO concentrated water.

Product Performance

The following performance is measured under test conditions of 150 psi (1.03 MPa) operating pressure, 2000 mg/L NaCl solution, 25℃ temperature, pH 7.0 ± 0.5, and 15% recovery rate.

Notes:

• Each membrane element may have ±15% variation of permeate flow.
• Minimum Rejection Rate: 99.4%

Operating Limits

• Maximum operating pressure: 600 psi (4.14 MPa)
• Maximum feedwater temperature: 45 ℃
• Maximum inlet flow rate: 17 m³/h
• Maximum concentration of free chlorine: 0.1 mg/L
• Maximum pressure drop per element: 15 psi (0.1 MPa)
• Allowed pH range for feedwater in operation: 2-11
• Allowed pH range for chemical cleaning: 1-13
• Maximum feedwater flow SDI₁₅: 5

Mechanical / Hydraulic

• Packing carton (L:W:H): 1080×216×232 mm
• Connector material number: 3.02.09.0006

Important Information

• Dry membrane elements are shipped without preservation solution. Wet membrane elements use 1.0% sodium bisulfite (with 10% propylene glycol antifreeze added in winter) as a preservation solution for storage.
• Dry membrane elements must be kept wet after soaking. Wet membrane elements not in use for extended periods require preservation solution.
• For first-time use, flush the membrane element for 15-25 minutes at low pressure, then for 60-90 minutes at high pressure (water flow should not be less than 50% of the system design flow).
• Permeate and concentrated water from the first hour of initial operation should be discharged.
• The operating limits and guidelines provided are part of the limitations for the three-year warranty.
• The addition of any chemicals that may affect the membrane element during storage and operation is prohibited.

Disclaimer: This summary is based on the provided text extract. The original PDF may contain additional figures, footnotes, or more recent revisions. For contractual data, please refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet