TR70-2521-HF

Summary

Product identification

• Model Numbers: TR70-2521-HF & TRH-2521 (2.5 x 21 INCH TAPE WRAP BRACKISH ELEMENTS)
• Membrane Type: Crosslinked Aromatic Polyamide, Negative Charge
• Element Configuration: Spiral Wound, Tape Wrap

Performance Specification

Test Conditions:

• Condition A:
  • Temperature: 25 °C
  • Feed Solution, Concentration: 1500 ppm NaCl
  • Feed Pressure: 15 bar
  • Brine : Permeate ratio: 5 : 1
  • Feed pH: 6.5 - 7.5
• Condition B:
  • Temperature: 25 °C
  • Feed Solution, Concentration: 500 ppm NaCl
  • Feed Pressure: 7.5 bar
  • Brine : Permeate ratio: 5 : 1
  • Feed pH: 6.5 - 7.5

Notes on Performance:

• Average value for 100 elements after 1 hour operation.
• Product Flow Rate +/- 15%.
• Salt Rejection minimum 98%.
• Minimum Performance data are for any single element.

Operating limits

The recommended design range signifies safe operational and design conditions under not-so-much fouling and scaling. Operating outside this range may reduce effective membrane life.

• Operating Pressure:
  • Recommended: < 15.0 kg/cm² (216 psi)
  • Maximum: 20 kg/cm² (288 psi)
• Operating Temperature: < 35 °C (95 °F)
• Feedwater Turbidity (SDI₁₅): < 5 (High flux operation on feedwater turbidity > 3 or 4 SDI₁₅ generally results in frequent cleaning requirements.)
• Feedwater Chlorine Concentration: 0 ppm
• pH Range, Continuous Operation: 3 - 11 (Both feed and brine water must meet this range.)
• pH Range, Chemical Cleaning: 2 - 11 (Cleaning and sterilization must meet the recommendations in the Technical Bulletin.)
• Feed Flow Rate per Vessel: < 650 l/h (3 gpm)
• Brine Flow Rate per Vessel: > 250 l/h (1 gpm) (This figure may be reduced when there is low possibility of fouling and scaling.)
• Brine/Permeate Flow Ratio: 5 : 1 (Flow ratio of brine to permeate for each single element.)

Mechanical / hydraulic

• Pressure Drop:

  • Per Element: 0.3 kg/cm² (4 psi)
  • Per Vessel: 1.0 kg/cm² (14 psi)
  • Element(s) must be cleaned when pressure drop increases to 1.5 times of the initial value.

• Dimensions:

  • Total Length: 21’’ (533 mm)
  • Diameter (approx.): 4’’ inch (101 mm)
  • Permeate tube outer diameter: 0.75’’
  • Other dimensions shown as 19’’ (482 mm), 1’’ (25.4 mm), 2.4’’ (61 mm) in diagram referencing unspecified features. See the official PDF for exact tabulated values and diagrams.

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

Official datasheet (PDF)

PDF datasheet