Advantages of Using Aquasust PTFE Membrane in Disc Diffusers

By: Kate Nana

Post Date: June 17th, 2025

Email:info@aquasust.com

Post Tags: PTFE Membrane，Membrane，WastewaterSolutions，sewagetreatment ，plantsite ，constructionsite

1. Exceptional Chemical Stability and Corrosion Resistance:

Aquasust PTFE Membrane exhibits outstanding resistance to virtually all strong acids, strong alkalis, strong oxidants, organic solvents, and corrosive gases.

This is one of its core strengths. In complex, highly corrosive wastewater environments (e.g., industrial effluent, saline wastewater, chlorinated wastewater), the Aquasust PTFE Membrane ensures long-term stable operation, resisting corrosion, dissolution, or degradation, thereby significantly extending service life. In contrast, traditional materials like silicone or EPDM (Ethylene Propylene Diene Monomer) rubber are prone to aging and failure in harsh conditions.

2. Ultra-Low Surface Energy and Superior Anti-Fouling Properties:

Aquasust PTFE Membrane possesses one of the lowest surface energies of any solid material (known as "non-stick"), resulting in an extremely smooth, highly hydrophobic, and oleophobic surface.

This makes it exceptionally difficult for sludge, microorganisms (flocs, filamentous bacteria), oils, colloids, and inorganic scales to adhere and accumulate on its surface.

It drastically reduces the risk of pore clogging, effectively maintains uniform aeration distribution and efficiency, and minimizes cleaning frequency and maintenance requirements. Anti-fouling performance is crucial for improving aeration efficiency and reducing energy consumption.

3. High Gas Transfer Efficiency and Superior Oxygen Transfer Efficiency (OTE):

The Aquasust PTFE Membrane can be engineered (e.g., through stretching) to possess a uniform, dense microporous structure (pore size typically 0.1-3 micrometers).

This microstructure enables the generation of numerous, fine, and uniformly sized bubbles.

Fine bubbles have a larger specific surface area, rise more slowly, and have longer contact time with the wastewater, leading to a significant improvement in oxygen mass transfer efficiency (OTE).

This translates to requiring less air volume to achieve the same dissolved oxygen level, or achieving higher dissolved oxygen levels with the same air volume. Consequently, it enables substantial savings in blower energy consumption (aeration is typically the largest energy consumer in WWTPs).

4. Exceptionally Long Service Life:

Due to its exceptional chemical stability and anti-fouling capabilities, the physical and chemical degradation of the Aquasust PTFE Membrane is very slow.

Its service life is typically far longer than traditional rubber membranes (e.g., EPDM, silicone), often reaching 8-15 years or more. Although the initial investment cost is higher, its extended lifespan combined with savings in energy and maintenance costs often results in lower total lifecycle costs.

5. Broad Temperature Tolerance:

Aquasust PTFE Membrane offers excellent thermal stability, with an extremely wide continuous operating temperature range (approximately -200°C to +260°C).

It is suitable for high-temperature wastewater (e.g., from certain industrial processes) or cold climates, as its performance does not degrade significantly with temperature fluctuations. costs.

6. Low Maintenance Requirements:

Due to its resistance to clogging and scaling, cleaning frequency is greatly reduced.

When cleaning is necessary, its smooth surface allows contaminants to be washed off more easily, improving cleaning effectiveness. This reduces labor costs and downtime.

7. Good Mechanical Strength and Dimensional Stability:

The Aquasust PTFE Membrane material possesses inherent strength and toughness, making the microporous membrane resistant to deformation or rupture under normal operating pressures.

Its low coefficient of thermal expansion ensures good dimensional stability, guaranteeing long-term operational reliability of the Disc Diffuser.

Summary:

The core advantages of Disc Diffusers equipped with Aquasust PTFE Membrane lie in their exceptional chemical corrosion resistance, superior anti-fouling properties, high oxygen transfer efficiency, and exceptionally long service life.

These characteristics make them particularly suitable for:

1.Treatment of highly corrosive industrial wastewater (chemical, pharmaceutical, electroplating, dyeing, etc.).

2.Municipal or industrial wastewater treatment plants demanding high oxygen transfer efficiency and low energy consumption.

3.Applications prone to sludge bulking, scaling, or other conditions that cause clogging in traditional aerators.

4.Facilities pursuing low maintenance and long-term stable operation.

5.Treatment of high-temperature or low-temperature wastewater.

Although the initial purchase cost of Disc Diffusers with Aquasust PTFE Membrane is typically higher than aerators with traditional rubber membranes, their significant advantages in energy savings (blower electricity costs), reduced maintenance costs, and extended replacement cycles often make them more cost-competitive over their total lifecycle, particularly in applications demanding high operational efficiency and reliability.

Aquasust provides comprehensive wastewater treatment solutions(mbbr media water treatment) and is a professional supplier(mbbr media suppliers) of sewage treatment equipment. We manufacture core products including MBBR media, Disc diffusers, Tube diffusers, Drum Filter and Tube settlers, committed to delivering high-quality products for the global water treatment sector.