FAQs

Suntar Environmental Technology Pte Ltd., commonly known as “Suntar Membrane,” stands at the forefront of global membrane technology development and applications.

Spiral Wound Membrane

Suntar’s spiral wound MF and UF membranes are typically used in non-water applications, including the extraction, purification, and concentration of various biopharmaceutical, food and beverage, and chemical products. Suntar’s spiral wound NF and RO membranes are used in both water and non-water applications .

Yes, we have worked with F&B, Pharma and Biotech companies for process applications which require sanitary grade membranes and systems and also provided pure water solutions for beverage companies as well.

The membranes are typically made from Polyethersulfone, Polysulfone, Polyamide. 

The feed stream passes through the membrane layers, where unwanted solutes are rejected, and purified product (permeate) flows into the central collection tube.

Performance is influenced by factors such as:

  • Membrane type (RO, NF, UF, MF)
  • Operating pressure and temperature
  • Feed water composition and fouling potential
  • Recovery rate

Pre-treatment (e.g., filtration, antiscalants), regular cleaning (CIP), and operating within design limits can minimize fouling issues like scaling, biofouling, or particulate fouling.

Cleaning frequency depends on fouling rates and water quality but is typically once every 3-6 months or when a performance drop is observed (e.g., pressure increases or permeate quality decreases).

  • Chemical or physical damage during operation or cleaning
  • Fouling or scaling
  • Operating outside recommended pressure, pH, or temperature ranges

Minor leaks or fouling issues can be addressed with proper cleaning or sealing, but major damages (e.g., ruptures) typically require membrane replacement.

Perform chemical cleaning to restore the permeate flowrate. 

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