What Makes Holly's Fine Bubble Plate Diffusers a Worldwide Choice?

author: lisa

2026-01-09

Fine Bubble Diffusers

Fine bubble diffusers produce oxygen bubbles to nourish microorganisms during the wastewater treatment aeration process. Aeration, the biological process that occurs during the secondary phase of wastewater treatment, relies on quality bubble diffusers to supply oxygen to the beneficial bacteria that break down organic matter.

Proper diffuser selection is essential to ensure efficient operation and longevity. Holly offers several different materials of bubble diffusers to fit various wastewater treatment systems. Fine bubble diffusers use less power and can produce more oxygen bubbles than coarse bubble diffusers. Holly ’s fine bubble diffusers are durable and energy-efficient to support water treatment systems of all sizes.

Fine Bubble Diffuser Membranes

Fine bubble diffuser membranes come in various materials to meet wastewater treatment system needs. Holly offers the following diffuser membrane types.

PTFE-Coated Membranes

PTFE surfaces protect diffuser membranes from substances that can damage conventional membrane elastomers and shorten their lifespans. Holly ’s PTFE membranes are made of synthetic rubbers that are highly resistant to solvents, chemicals, grease and fats.

PTFE membranes are resistant to fouling and require less frequent cleaning than other membranes. PTFE surfaces serve as barriers that prevent shrinking, hardening, plasticizer extraction and swelling. The benefits of PTFE significantly reduce long-term power costs and increase the diffuser’s ability to distribute air evenly across the system’s floor.

EPDM Rubber

EPDM rubber’s low plasticizer content extends its life span — EPDM membranes last longer before breaking, hardening or shrinking. Their elongation at break and tensile strength are much higher than industry standards, making them significantly resistant to tearing. It can stretch up to 700% of its resting span, which prevents it from deforming over time.

Silicone Membranes

Silicone-coated membranes are ideal for wastewater treatment systems with ozone issues, high temperatures or a preference for inorganic membrane materials. Silicone membranes can withstand temperatures up to 315 degrees Celsius.

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What Makes Holly's Fine Bubble Plate Diffusers a Worldwide Choice?

1.Our EPDM membranes are guaranteed not to leak at startup due to Holly ’s patented single-molding technology.
2.PTFE membranes prolong membrane life and can dramatically reduce operating cost over time, especially when combined with larger slit sizes.
3.It is a right-sized product. It’s large enough to save you money on piping and installation cost, but small enough not to break off due to extreme cantilever.
4.System integrity – we recommend the use of 3″/90mm or 4″/110mm PVC/ABS pipe for mounting.
We offer system design service before the sale and after sales service and support.