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Water Reuse: The Potential of RO and UF | Membrane Filters
May 16, 2022

Water Reuse: The Potential of RO and UF

In recent years, membrane filtration technology has become a preferred treatment for water reuse applications due to its ability to produce reliable, consistent, and high-quality water safe for human consumption. Membrane filtration in wastewater treatment helps remove salts and pathogens, which is considered a primary goal of water treatment.

Various membrane filters are used in centralized and decentralized water reuse applications. The membrane filtration process used is determined by the desired end use of the treated water. Microfiltration and ultrafiltration are typically used due to their ability to produce water that is low in suspended solids and turbidity. Nanofiltration and Reverse Osmosis membranes are used in advanced wastewater treatment applications.

 With the help of one of the best membrane filter sellers in India- Arvind KaiGO, there are various advantages that RO and UF membranes hold in water reuse.

This blog looks at the significant role that membrane technology- namely reverse osmosis and ultrafiltration- plays in water reuse.

Reverse osmosis is a water purification technology that uses pressure to force water through a semi-permeable membrane. A semi-permeable membrane is a membrane that allows some atoms or molecules to pass through but not others.

Apart from removing just impurities and microorganisms, RO can also remove microorganisms. Reverse osmosis ensures that the dissolved organics and salts are removed to a sufficient extent. It cleans the water down to the molecular level, leaving nothing but pure H2O behind.

  • What is Ultrafiltration?

Ultrafiltration or UF is a membrane filtration process that uses hydrostatic pressure to force the wastewater through a semi-permeable membrane. The ultrafiltration membrane filter is a pressure-driven barrier that removes suspended solids, bacteria, viruses, endotoxins and other pathogens. Water and solutes with low molecular weight pass through the membrane while the suspended solids and solutes with high molecular weight are retained.

Except for the molecular size of the molecules retained, UF is fundamentally similar to reverse osmosis, nanofiltration and microfiltration. 

The membranes offered by Arvind KaiGO are part of the globally-recognized Hydranautics products. Our products support high-quality water purification in industrial, municipal, commercial and consumer water treatment systems.

Use of reverse osmosis and ultrafiltration

 Membranes are now being used in the application of wastewater reuse, the fastest growing and promising membrane application in the water industry. In fact, membrane filtration for wastewater treatment is the reason for the possibility of water reuse, as without membranes, wastewater treatment to standard quality and security would be too difficult and costly.

The most widely used membrane technology for water purification worldwide is reverse osmosis, ultrafiltration and microfiltration.

Among them, RO is emerging as the dominant technology for water purification, especially in desalination plants. At the same time, UF is a top choice in the pretreatment of wastewater before it enters the RO plant.

Reverse osmosis and Ultrafiltration technologies are also predominantly used in the desalination of brackish water, and processing of waste from the chemical, pharmaceutical and other process industries.

Potential of using RO and UF

The desalination and wastewater treatment plant are expected to grow as new pre-treatment technologies arise. The Indian water treatment market is growing at a CAGR of  8.5% in the forecast period of 2020 to 2027 and is expected to reach USD 4.3 billion in the next five years.1

 With MF and UF technologies providing successful pretreatment, more industries and municipalities are realizing the benefits of installing new water systems with RO technology and a proper pretreatment system. The adoption of membrane filtration in wastewater treatment has increased in recent years. Many major market participants are experimenting with and installing MF/UF systems with RO systems and are realizing the benefits of these systems.

The global RO membrane market size was valued at USD 6.9 billion in 2017 and is estimated to reach USD 13.5 billion by 2025.2

RO and UF for water reuse

Membrane filtration technology has grown in popularity as a treatment for water reuse applications. This is due to several reasons but mainly because it can produce dependable, consistent, and high-quality water fit for human consumption.

Membrane filters have several advantages over conventional treatment systems, including a lower life-cycle cost and a smaller footprint. Due to the reduced process steps and chemicals required to achieve high-quality water. The compact design of the membrane means a small system footprint that is extremely important for plants with limited space for expansion.

With the help of the best membrane filter sellers in India, like Arvind KaiGO, industries can save money and maintain a consistent production without employing outside sources for additional water, whether it is for potable water solutions or for industrial purposes.

 Ready to take on RO and UF technology for water filtration? Check out our membrane filtration products fit for every industry. 

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