TML20D

Summary

Product identification

This document describes Brackish Water RO Elements, specifically the TML20D series. The membrane type is Cross Linked Fully Aromatic Polyamide Composite.

Performance specifications for specific models are:

• TML20D-370
  • Product Flow Rate: 9,700 gpd (36.7 m³/d)
  • Salt Rejection: 99.8 %
  • Membrane Area: 370 ft² (34 m²)
  • Diameter: 8”
  • Feed Spacer Thickness: 34 mil
• TML20D-400
  • Product Flow Rate: 10,500 gpd (39.8 m³/d)
  • Salt Rejection: 99.8 %
  • Membrane Area: 400 ft² (37 m²)
  • Diameter: 8”
  • Feed Spacer Thickness: 34 mil
• TML20DA400
  • Product Flow Rate: 10,500 gpd (39.8 m³/d)
  • Salt Rejection: 99.8 %
  • Membrane Area: 400 ft² (37 m²)
  • Diameter: 8”
  • Feed Spacer Thickness: 31 mil
• TML20D-440
  • Product Flow Rate: 11,500 gpd (43.6 m³/d)
  • Salt Rejection: 99.8 %
  • Membrane Area: 440 ft² (41 m²)
  • Diameter: 8”
  • Feed Spacer Thickness: 28 mil

Operating limits

• Maximum Operating Pressure: 600 psi (4.1 MPa)
• Maximum Feed Water Temperature: 113 °F (45 ℃)
• Maximum Feed Water SDI₁₅: 5
• Feed Water Chlorine Concentration: <0.1 ppm
• Feed Water pH Range, Continuous Operation: 2-11
• Feed Water pH Range, Chemical Cleaning: 1-13
• Maximum Pressure Drop per Element: 20 psi (0.14 MPa)
• Maximum Pressure Drop per Vessel: 60 psi (0.4 MPa)

Feed water

Test Conditions used for performance data:

• Feed Water Pressure: 225 psi (1.55 MPa)
• Feed Water Temperature: 77 °F (25 ℃)
• Feed Water Concentration: 2,000 mg/L NaCl
• Recovery Rate: 15 %
• Feed Water pH: 7
• Minimum Salt Rejection: 99.65 %

General warnings:

• It is strongly recommended to remove free chlorine and other oxidizing agents (especially with heavy metals as catalysts) from the feed water before operating the RO system to prevent unexpected membrane oxidation.

Product water

• Permeate from the first hour of operation shall be discarded.

Mechanical / hydraulic

• Overall length: 40 inches (1,016 mm)
• Nominal Element Diameter: 7.9 inches (201 mm) for element body, 8 inches for product family designation.
• Permeate tube diameter: 1.125 inches (29 mm)

General Information

• Elements are wet tested and treated with a 1% by weight sodium bisulfite storage solution, then vacuum packed in oxygen barrier bags.
• Alternatively, elements are treated with tested feed water solution and vacuum packed in oxygen barrier bags with deoxidant inside.
• For short-term storage, shipment, or system shutdown, it is recommended to immerse elements in a protective solution of 500-1,000 ppm sodium bisulfite (food grade) dissolved in permeate to prevent biological growth.
• Use of chemicals incompatible with the elements will void the limited warranty.

Disclaimer

This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions found in the official PDF datasheet. For contractual data and the most up-to-date specifications, always refer to the current OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet