Product Introduction
The Micro-perforated disc diffuser is a membrane-type aeration device that uses Ethylene Propylene Diene Monomer (EPDM) rubber as its core material. Disc diffuser efficiently oxygenates by releasing fine bubbles through micro-perforations. The base and support structure are typically made from ABS or PP engineering plastics, offering both corrosion resistance and mechanical strength. EPDM rubber provides excellent aging resistance and acid-base durability, making disc diffuser suitable for long-term operation in complex water conditions.
Structure and Working Principle
Core Structure
Membrane
Made of EPDM material, with uniformly distributed micro-pores on the surface (pore size 80-100μm), thickness ≥ 1mm, and precision perforation through CNC cutting.
Support Body
A hemispherical or flat structure made of ABS/PP, providing support for the membrane and guiding airflow.
Check Valve
A built-in check valve in the base to prevent backflow of the mixed liquid and clogging of the pipes.
Working Principle
Compressed air enters the aeration disc through the gas distribution pipe and passes through the check valve into the gap between the membrane and the support body.
The air pressure expands the membrane's micro-pores, releasing bubbles with a diameter of 1-3mm, increasing the gas-liquid contact area.
When the air supply stops, the membrane elastically closes the micro-pores, and with the dual anti-clogging design of the check valve, it prevents impurities from entering.
Daily Maintain
1. Regular Cleaning: Clean the membrane surface monthly to remove impurities and prevent pore blockage.
2. Lubrication Check: Replace the lubricating oil every 2,000 hours of operation and check the mechanical seals.
3. Long-Term Idle: Drain accumulated water, store in a dry place to prevent membrane aging.

Company Profile
VIVA-MIX is a sub-brand of Henan ECO Environmental Equipment CO.,Ltd.
Our factory located in a famous historic city--- Nanjing, Jiangsu Province, specialize in manufacturing submersible mixers, vertical mixers and aeration mechanical & devices for wastewater treatment applications. Guided by our corporate philosophy of "Technology Leads, Quality Survival," we continually study and research cutting-edge technologies and innovative processes from top domestic and international products. By integrating these advancements with working site experiences, we have developed a unique series of products that stand out in the wastewater treatment field.
Our core product range includes energy-saving submersible mixers& recirculation pumps, standard submersible mixers & recirculation pumps , mixers designed specifically for MBBR fillers, hyperbolic mixer& other paddle type vertical mixers, submersible(jet) aerators and various membrane type air diffuser along with installation kits. All our products have been verified by authoritative national testing agencies. Over the past decade, our equipment has been widely deployed in municipal sewage treatment plants and industrial wastewater projects across various sectors, proving its durability and market reliability. We have exported our product to to over 100 countries and regions and enjoy a good reputation among our customers.
To date, our company has been awarded four invention patents and twenty-five utility model patents, with certifications of ISO quality management system, ISO environmental management system, ISO occupational health and safety management system.
Dedicated to continuous self-improvement and product optimization, We looking forward to walking the path of environmental protection with you!
Parameter Table
|
Material |
ABS+EPDM |
ABS+Silicone |
||||
|
Specifications |
D200 |
D260 |
D300 |
D200 |
D260 |
D300 |
|
Outer diameter (mm) |
215 |
280 |
330 |
215 |
280 |
330 |
|
Membrane diameter(mm) |
192 |
255 |
300 |
192 |
255 |
300 |
|
Membrane thickness(mm) |
2 |
2 |
2 |
2 |
2 |
2 |
|
Hole diameter(μm) |
80-100 |
80-100 |
80-100 |
80-100 |
80-100 |
80-100 |
|
Bubble diameters(mm) |
1~3 |
1~3 |
1~3 |
1~3 |
1~3 |
1~3 |
|
Air flow range (Nm3/h) |
1~2.5 |
1~4 |
1~6 |
1~3 |
1~3 |
1~3 |
|
Average air flow at 4m (Nm3/h) |
1.8 |
2.5 |
4 |
1.8 |
2.5 |
4 |
|
Max. Working temperature(℃) |
80 |
80 |
80 |
100 |
100 |
100 |
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