Air diffusers for wastewater plants are categorized by bubble size—fine and coarse—and shape (disc, tube, panel) to optimize oxygen transfer and mixing. Fine bubble diffusers (EPDM/silicone) maximize oxygen transfer efficiency (OTE) for aeration tanks. Coarse bubble diffusers are designed for high-turbulence applications, such as sludge mixing and grit chambers, due to their clog-resistant, durable design.
At FIPL, we offer all three air diffuser options to suit diverse application requirements and customer preferences.
COARSE BUBBLE DISC DIFFUSERS
Key Specifications
Coarse Bubble Diffusers by FIPL are dependable aeration solutions for wastewater treatment systems. Also known as Coarse Bubble Diffusers Wastewater, Coarse Bubble Disc Diffuser, and supplied by trusted Coarse Bubble Diffuser Manufacturers, these diffusers are designed to deliver strong mixing and consistent oxygen supply in biological treatment processes.
- Bubble Size: Coarse bubble
- Air Flow Rate: 5 m³/hr
- Diffuser Type: Disc
- Size: 80 mm
- Membrane Material: EPDM
- Pipe Connection: 3/4 inch BSP
- Max Operating Temperature: 60°C
80mm EPDM Coarse Bubble Diffusers are manufactured with a durable plastic base and flexible EPDM membrane for long service life. The large bubble formation ensures high mixing efficiency, making these diffusers suitable for aeration tanks, equalization tanks, and high-solid wastewater treatment applications. Designed for low maintenance and stable performance, they support effective oxygen transfer in demanding operating conditions.
FINE BUBBLE DISC DIFFUSER
Fine Bubble DISC Diffusers are designed to handle high volumetric airflow while producing consistent fine bubbles for efficient oxygen transfer. The perforated membrane design improves aeration efficiency and helps prevent backflow, ensuring stable performance and long service life in continuous wastewater treatment operations.
Its advanced integrated check valve system allows easy air-on/air-off operation, enabling selective shutdown of aeration zones for improved process control and operational efficiency.
Key Features
- Durable ABS engineering plastic body with arched surface design
- Special anti-corrosive EPDM rubber membrane
- CNC-punched perforations for uniform bubble formation
- Low pressure drop for energy-efficient operation
- In-built air distribution ducts for even airflow across the membrane
- Non-return valve to prevent sewage or effluent backflow
- Secure threaded locking arrangement for membrane stability
- Excellent resistance to shrinkage, chemical attack, and hardening
- Long operational life with consistent performance
Advanced Membrane Technology
The diffuser membrane is manufactured using a hot moulding process with high-quality EPDM rubber, offering superior physical and chemical resistance. Precision CNC perforation ensures consistent hole patterns for efficient fine bubble generation and enhanced oxygen transfer efficiency.
The specially designed membrane expands easily during aeration, reducing back pressure and improving overall system performance.
Reliable Aeration Performance
The diffuser body incorporates specially engineered air ducts that distribute air evenly throughout the diffuser surface. This design minimizes pressure loss and ensures efficient membrane operation during aeration.
An integrated non-return valve prevents the reverse flow of sewage or effluent into the air piping network, protecting the aeration system and improving operational reliability.
Disc Diffuser Membrane Technical Parameters
| # | Parameter | Technical Value |
|---|---|---|
| 1 | Material | EPDM Rubber |
| 2 | Shore Hardness | 58 ± 2 Shore A |
| 3 | Tensile Strength | 13.2 MPa |
| 4 | Tear Strength | 39 N/mm |
| 5 | Resilience | 57% |
| 6 | Resistance to Deionized Water | Volume change rate – 1.2% Mass change rate – 0.7% |
Available Sizes
FIPL Fine Bubble Disc Diffusers are available in multiple sizes to meet varying treatment plant requirements:
- 215 mm Disc Diffuser
- 260 mm Disc Diffuser
- 300 mm Disc Diffuser
Technical Details
| Model | 215mm | 260mm | 300mm |
|---|---|---|---|
| Size | 8 inch | 10 inch | 12 inch |
| Bubble Type | Fine bubble | Fine bubble | Fine bubble |
| MOC | EPDM / Silicon / PTFE membrane | EPDM / Silicon / PTFE membrane | EPDM / Silicon / PTFE membrane |
| Strengthened PP + GF (glass fiber) carrier plate | Strengthened PP + GF (glass fiber) carrier plate | Strengthened PP + GF (glass fiber) carrier plate | |
| Connector | 3/4 NPT | 3/4 NPT | 3/4 NPT |
| Bubble Size | 1 – 2 mm | 1 – 2 mm | 1 – 2 mm |
| Flow Range | 1 – 6 M³/h | 1 – 8 M³/h | 1 – 10 M³/h |
| Slit Quantity | 5000 | 8900 | 10000 |
| Service Area | 0.2 – 0.64 M² | 0.25 – 1.0 M² | 0.3 – 1.2 M² |
| Service Life | > 5 years | > 5 years | > 5 years |
FINE BUBBLE TUBE DIFFUSER
High-Efficiency Aeration for Superior Oxygen Transfer
Our Fine Bubble Tube Diffuser is designed to deliver exceptional aeration performance with high oxygen transfer efficiency and energy savings. Featuring a unique split-pattern membrane and precision slit design, the diffuser produces extremely fine and uniform air bubbles for effective oxygen distribution in water and wastewater treatment applications.
Product Highlights
High Oxygen Transfer Efficiency
Engineered to generate ultra-fine bubbles that maximize oxygen exchange and improve aeration performance.
Energy Saving Performance
Consumes significantly lower power compared to conventional diffusers, helping reduce operating costs by up to 30%.
Long Service Life
Manufactured using high-quality materials that ensure reliable performance with an operational life of approximately 5–8 years.
Uniform Air Distribution
Special slit design provides consistent and balanced airflow, resulting in tight and uniform bubble formation.
Advanced Aeration Support Design
The open support structure minimizes buoyancy impact on the aerator body, enhancing durability and extending diffuser life.
Key Features
- Fine bubble aeration technology
- High oxygen exchange capacity
- Low energy consumption
- Up to 30% operational cost savings
- Uniform bubble distribution
- Durable and corrosion-resistant construction
- Easy installation and maintenance
- Long operational lif
Applications
Suitable for a wide range of water and wastewater treatment systems, including:
- Sewage Treatment Plants (STP)
- Effluent Treatment Plants (ETP)
- Biological Treatment Systems
- Equalization Tanks
- Aeration Tanks
- Industrial Wastewater Treatment
Efficient Aeration. Lower Energy Costs. Longer Life.
The Fine Bubble Tube Diffuser is an ideal solution for modern aeration systems requiring high oxygen transfer efficiency, reliable performance, and long-term operational savings.
Technical details
| Specification | Model 1 | Model 2 | Model 3 |
|---|---|---|---|
| MOC | EPDM / Silicon membrane ABS tube | EPDM / Silicon membrane ABS / PP carrier plate | EPDM / Silicon membrane ABS / PP carrier plate |
| Length | 500 MM | 750 MM | 1000 MM |
| Connector | 3/4 NPT | 3/4 NPT | 3/4 NPT |
| Flow Range | 2 – 8 M³/h | 5 – 12 M³/h | 16 M³/h |
| Bubble Size | 1 – 2 MM | 1 – 2 MM | 1 – 2 MM |
| Service Area | 0.75 M² | 1.5 M² | 2.25 M² |
| Service Life | > 8 year | > 8 year | > 8 year |