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Spiral Wound Membrane

Membrane-Based Solutions for Advanced Process Separation and Water Treatment

Product Description

Selecting the right membrane technology for specific applications and achieving maximum separation efficiency can be challenging. Suntar makes this process simpler and more effective by leveraging years of expertise in process separation, water treatment and purification. Our spiral wound membranes, available in Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF), and Reverse Osmosis (RO) are made from high quality imported raw materials ensuring exceptional performance and durability. With customisable options, they give you the flexibility to meet unique requirements.

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What Is a Spiral Wound Membrane?

Spiral wound membranes deliver exceptional versatility, seamlessly integrating to both process separation and wastewater treatment applications.

Spiral wound membranes are a type of separation membrane that utilize a semi-permeable barrier to achieve selective filtration. These membranes are constructed with several key components: a feed spacer, a permeate spacer, and a permeate tube. The membrane is wrapped around the central permeate tube in a spiral configuration. They come in various sizes, commonly including 1812, 2540, 4040, and 8040, each suited to different applications and flow requirements.

Cut-away diagram of a spiral wound membrane showing the feed spacer, membrane layers and central tube

The 1812 Spiral Wound Membrane measures 12 inches in length and has a diameter of 1.8 inches. The 2540 Spiral Wound Membrane measures 40 inches in length with a diameter of 2.5 inches. This specification is primarily used for pilot testing to assess the viability of new applications. It is also used in localized settings, such as small desalination units and pure water production for laboratory use.

The 8040 Spiral Wound Membrane measures 40 inches in length with a diameter of 8 inches. The 4040 Spiral Wound Membrane measures 40 inches in length with a diameter of 4 inches. These sizes are widely used in many industrial applications, with pressure vessels housing multiple membranes.

Applications for Spiral Wound Membrane

A broad selection of spiral wound membranes for Microfiltration (MF), Ultrafiltration (UF), Nanofiltration (NF), and Reverse Osmosis (RO) enables efficient recovery, purification, process separation, and concentration of products across industries such as food and beverage, biopharmaceuticals, chemical and metallurgy, and industrial water and wastewater treatment. These membranes are also suitable for water recovery and wastewater filtration. Various combinations of membrane materials, diameters, lengths, and spacers ensure compatibility with all cross-flow membrane filtration processes.

Key Benefits of Spiral Wound Membrane

  • A myriad of available membranes ensures excellent separation performance.
  • Strong anti-fouling properties.
  • A variety of feed spacers tailored to accommodate a wide range of viscosities and foulants.
  • Stable permeate quality, ensuring consistent and reliable output over time.
  • Made with high quality raw materials on automated production lines, under stringent quality management systems.

Product Portfolio

Discover our product range designed to meet diverse industrial needs.

FAQs

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Product Portfolio

Suntar offers four spiral wound membrane types, from microfiltration to reverse osmosis, in sizes 1812 to 8040.

Two Suntar spiral wound microfiltration membrane elements with amber end caps, one in a blue outer wrap

Spiral Wound Microfiltration Membrane

Suntar offers four spiral wound membrane types, from microfiltration to reverse osmosis, in sizes 1812 to 8040.

Two white Suntar spiral wound ultrafiltration membrane elements lying on grass

Spiral Wound Ultrafiltration Membrane

Suntar Spiral Wound Ultrafiltration (UF) membranes are the preferred choice in the food and beverage, biotechnology, and pharmaceutical industries, where they facilitate product recovery, purification, process separation, and concentration. Their versatility makes UF membranes one of our most adaptable products. We offer a comprehensive range of UF membranes with varying characteristics and properties to meet diverse application needs.

Close-up of the end of a white Suntar spiral wound Nanoflo membrane element, showing the centre tube

Spiral Wound Nanoflo® Membrane

Suntar Spiral Wound Nanoflo® Membranes are used to remove multivalent ions, large molecules and salts from water. They are also used in zero liquid discharge systems for salt separation (divalent vs. monovalent ions). At times, Nanoflo® membranes can also be used for hardness removal. Suntar offers Nanoflo® membranes with a wide molecular weight cutoff range of 150 Da to 1000 Da. Apart from water applications, these membranes are also used for decolourisation, impurity removal and product separation.

Two white Suntar spiral wound reverse osmosis membrane elements of different sizes on grass

Spiral Wound Reverse Osmosis Membrane

Suntar Spiral Wound Reverse Osmosis Membranes are primarily used in reverse osmosis plants for desalination, water treatment and purification. They are used to remove a wide range of impurities such as salts, inorganic and organic substances. They can also be used for concentration of various feed streams in process separation applications.

Most Frequently Asked Questions

When should spiral wound membranes be used over other types?

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. For other membrane types, see our ceramic membrane and hollow fiber membrane pages.

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 minimise fouling issues like scaling, biofouling, or particulate fouling.

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Industrial Water and Wastewater Treatment

Suntar provides industrial water and wastewater treatment systems for 12 industries, from power plants to oilfields, integrating proprietary membrane technologies developed and manufactured at our own production facilities. For sewage and town water, see our municipal wastewater treatment solutions.
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Leachate Treatment

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