Membrane discs
for flotation / fumigation
by KERAFOL®
The finest bubbles. Maximum impact.
Our ceramic membrane discs introduce air, oxygen, CO₂, or ozone directly into liquids—
ly efficient, durable, and versatile.
Explained in 60 seconds
What is that?
Porous ceramic discs through which gas escapes in the form of fine bubbles.
What do they do?
The tiny microbubbles provide a larger contact surface—and thus maximum efficiency.
Why is that a good thing?
Lower gas consumption, better mixing, stable processes.
Where are they used?
In fish farming, wastewater treatment, beverage production, the chemical industry, and the pharmaceutical industry.
Video: Rotary fumigation
KERAFOL® ceramic membrane discs can be used to introduce a wide variety of gases into liquids.
Applications range from flotation and fish farming to chemical engineering.
To achieve this, pressure is applied to the discs from the inside via channels. The gas permeates through the porous material. At a pressure of approximately 1.9 bar (H₂O / air), tiny bubbles emerge at the surface. This process can be further optimized by adding rotation, resulting in extremely fine bubble size distributions (static: approx. 50 µm; rotating: approx. 20 µm mean bubble size). The discs can be installed horizontally or vertically. They can also be used in high-pressure systems and at temperatures near the boiling point.
Your Benefits at a Glance
- Greater efficiency —ultrafine bubbles with a large surface area = optimal performance with lower gas consumption
- Versatile applications —from aquaculture and beverages to environmental and process engineering
- Sturdy & durable – resistant to chemicals and high temperatures
- Easy cleaning – regeneration via backwashing or hot steam
- Cost Advantage – Lower Operating Costs, Reduced Downtime, Long Service Life
Typical Applications
Fish Farming: Oxygen Supply for Healthy Populations and Higher Stocking Densities.
Wastewater Treatment: Particle Removal via Flotation for Clear Water.
Beverage Industry: Precise CO₂ injection for consistent carbonation.
Chemicals & Pharmaceuticals: Ozonation for effective disinfection and oxidation.
Technical Specifications
- Bubble size: approx. 20 µm (rotating) / approx. 50 µm (static)
- Media: Air, oxygen (O₂), carbon dioxide (CO₂), ozone (O₃)
- Installation orientation: horizontal or vertical
- Cleaning: Backflushing or Hot Steam (SIP)
- Operating range: up to the boiling point
Frequently Asked Questions – Explained Briefly
- How do I clean the diaphragm discs?
→ Backflushing or superheated steam.
- Which gases can be used?
→ Air, O₂, CO₂, O₃.
- How small are the bubbles?
→ approx. 20–50 µm.
- Can I install the panes vertically or horizontally?
→ Either is possible.
The Next Step
Whether for aquaculture, water treatment, or beverages—we’ll help you find the right solution. Request a data sheet or get advice.
Contact person
Christian Münch, M.S. in Physics, & Franz-Martin Fuchs, M.S. in Engineering
Phone: +49(0) 9645 – 88 610 / +49(0) 9645 – 88 430
Email: keramik@kerafol.com
Or fill out our contact form and let us know your application, desired throughput rates, or technical requirements—we’ll get back to you right away.