Fine Bubble Disc Diffuser
Advantages Of AquaSust Fine Bubble Disc Diffuser
Our disc diffusers provide customers with cost-effectiveness through efficient oxygen transfer capabilities and energy efficiency and feature the following advantages:
- Strong UV resistance
- Special anti scale fomula menmbrane
- High oxygen transfer rate
- Special opening design to prevent clogging
- Design optimization to reduce resistance loss and lower operating costs
- Compatible with standard pipeline systems, easy installation, and replaceable membranes
- Made of high-quality special membrane skin raw materials, strong anti-scaling ability, corrosion resistance, long life, suitable for various sewage environments
- 2 years quality guarantee
Advantages Of AquaSust PRO Fine Bubble Disc Diffuser
Our PRO series disc diffusers are designed to match the performance benchmarks of international top-tier brands, delivering higher oxygen transfer efficiency, longer service life, and lower long-term operating costs. Key advantages include:
- Ultra-Clean + Nano Anti-Scale membrane formula
- 10-15% higher oxygen transfer efficiency (OTE)
- 5-10 years extended service life
- PP + Glass Fiber reinforced housing
- Precision-optimized micro-hole distribution
- Multiple membrane material options
- Aligned with international leaders such as EDI Matrix and Xylem Silver
- 3-year quality guarantee
Compare Standard & PRO
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DIMENSION |
AquaSust Standard |
AquaSust PRO |
Technical Advantages |
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PRODUCT LEVEL |
Classic Standard Industry Benchmark. |
Premium /Extreme Grade Directly targeting global top-tier brands. |
PRO level aligned with international leaders such as EDI Matrix, Xylem Silver and more. |
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MEMBRANE TECHNOLOGY |
High Elastic EPDM Formula with standard rebound and self-cleaning ability. |
UItra-Clean +Nano Anti-Scale Formula Effectively resists scaling and prevents pore clogging. |
Solves membrane clogging caused by biofilm attachment or calcium salt deposition in complex water. |
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OXYGEN TRANSFER EFFICIENCY(OTE) |
Industry Standard Level Stable and reliable performance. |
Higher Efficiency 10%-15% higher than industry standard. |
Core advantage:Significantly improves oxygen transfer efficiency, delivering more DO with the same air flow. |
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HOUSING MATERIAL |
Industrial Grade ABS (with UV protection). |
ABS;PP+Glass Fiber Reinforced Composite High strength,high rigidity, excellent pressure resistance |
Key advantage:Ultra high rigidity and fatigue resistance,prevents leakage and deformation under deep tank high load. |
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SERVICE LIFE |
Typical 3-5 Years (with 2 years environmental warranty). |
>5Years Long-Term Operation Greatly reduces replacement frequency. |
Significantly extends asset renewal cycle and provides stronger infrastructure protection. |
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OVERALL ADVANTAGE |
Standard Performance Average Efficiency Normal Service Life Reduce procurement costs |
√ Higher OTE(10-15%+) √ Advanced Anti-Scaling √ Stronger Structure √ Longer Service Life (>5 Years) √ Lower Total Cost |
Better Performance Lower Energy Cost Longer Life Strong ROI |
Explore Our Videos
Get an inside look at our manufacturing process and witness how our products deliver reliable performance in real conditions.
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AquaSust's Disc Diffuser
Production Line -
Core Advantages of AquaSust's
Disc Diffuser -
AquaSust's Coarse Bubble Disc Diffuser
Aeration vs. Others
PRO Fine Bubble Disc Diffuser Technical Parameters
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Item Number |
AS-DD215 |
AS-DD270 |
AS-DD350 |
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Disc Diameter (mm) |
215 |
270 |
350 |
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Connector |
3/4"NPT Male thread |
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Bubble Size (mm) |
0.8-2.0 |
0.8-2.0 |
0.8-2.0 |
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Design Flow (m³/h) |
1.5-2.5 |
3.0-4.0 |
5.0-6.0 |
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Flow Range(m³/h) |
1.0-5 |
1.5-8.0 |
2-12 |
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Service Area (㎡) |
0.2-0.64 |
0.25-1.0 |
0.4-1.5 |
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Service Life (years) |
3 to 7 |
3 to 7 |
3 to 7 |
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Number of Perforations (Pcs) |
4400 |
6600 |
11440 |
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Thickness of Membrane (mm) |
2±0.1 |
2±0.1 |
2±0.1 |
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Use of Temperature (℃） |
0-80 |
0-80 |
0-80 |
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Model |
AS-DD215-PRO |
AS-DD270-PRO |
AS-DD350-PRO |
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Bubble Type |
Fine Bubble |
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| Plate Diameter | 215mm | 270mm | 350mm |
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Membrane Diameter |
8 inch |
9 inch |
12 inch |
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Membrane Material |
EPDM, PTFE, Silica Gel, TPU |
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Base Material |
PP+Glass Fibre |
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Connector |
3/4"NPT male thread |
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Service Life |
5-10 years |
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Pore count |
4800 |
7100 |
12300 |
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Membrane Thickness |
2mm |
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Bubble Size |
1-2mm |
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| Design Flow | 1.5-4 m³/h | 3-7 m³/h | 4-9m³/h |
| Max Flow | 6m³/ h | 12 m³/h |
17 m³/h |
| SAE | ≥8.9kg O2/kw*h | ||
| Headloss | v | ||
Why Choose AquaSust PRO Fine Bubble Disc Diffuser?
The AquaSust PRO Series is engineered for wastewater treatment projects where performance, durability, and total cost of ownership (TCO) are the primary selection criteria.
Trusted by engineers across 50+ countries worldwide, the PRO series combines advanced membrane science with precision structural engineering.
More Uniform Fine Bubbles
The PRO series features optimized hole distribution — 4,800 holes (215mm), 7,100 holes (270mm), and 12,300 holes (350mm) — generating uniform 1–2mm fine bubbles across the entire membrane surface. Consistent bubble size maximizes air-water contact area and oxygen transfer efficiency at every operating point.
01
Lower Pressure Loss — Reduce Operating Costs
Advanced internal airflow design minimizes headloss (1,500–4,300 Pa operating range) and reduces blower energy demand. Combined with the Ultra-Clean membrane formula, the PRO series delivers a 10–15% energy saving potential over the full service life compared to industry-standard diffusers.
02
Anti-Clogging Membrane Design
The Ultra-Clean + Nano Anti-Scale Formula membrane actively resists scaling and pore clogging — the primary cause of performance degradation in fine bubble diffusers.
This maintains stable SAE ≥8.9 kg O₂/kW·h throughout the diffuser's operational life, reducing maintenance frequency and emergency downtime.
03
Longer Service Life: 5–10 Years
PP+Glass Fiber reinforced composite housing combined with PRO-grade membrane material ensures structural integrity under continuous submersion. The PRO series is designed for 5–10 years of long-term operation — extending replacement intervals and reducing lifecycle replacement costs compared to standard-grade diffusers (3–5 year service life).
04
Choose the Right Disc Diffuser Membrane for Your Application
The aeration membrane plays a decisive role in bubble size, chemical resistance, and anti-fouling performance.
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AquaSust Disc Diffuser Series |
EPDM Disc Diffusers |
TPU Disc Diffusers |
PTFE Disc Diffusers |
Silicone Disc Diffuser |
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Membrane Material |
Formula EPDM or Silicon/PTFE coated EPDM |
Thermoplastic Polyurethane |
PTFE, Coated scale inhibitor film |
Silicone rubber, Extremely elastic |
|
Carrier Plate |
Acrylonitrile-Butadiene-Styrene with UV Protector (ABS) |
Formula Strengthen ABS Material |
Formula Strengthen ABS Material |
Formula Strengthen ABS Material |
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Features |
Wide range of applications, suitable for most situations |
High elasticity, Weather resistance, Corrosion resistance |
Corrosion resistant Heat resistant |
Nider temperature adaptabilit Stable bubble generation |
Unlock Custom Wastewater Solutions with AquaSust
In addition to our premium standard wastewater products and equipment, AquaSust offers flexible OEM and ODM partnerships tailored to your project needs. Partner with us to create solutions that perfectly fit your requirements.
Related Blogs
Why Choose Aquasust As Your Disc Diffuser Manufacturer?
Aquasust takes pride in being a leading disc diffuser manufacturer in China, boasting over 12 years of industry experience. We specialize in the production and supply of bulk disc diffusers, offering a wide range of dimensions and specifications to meet diverse customer needs.
State-of-the-art Manufacturing Facilities
Strong R&D Capabilities
Stable Supply
Comprehensive Expert Support
FAQ
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1. What Is a Disc Diffuser?
A disc diffuser is a key component in wastewater treatment systems, designed to efficiently aerate water by introducing fine or coarse air bubbles into the water flow. These air bubbles help increase dissolved oxygen levels, which are essential for the growth of aerobic microorganisms that break down organic pollutants.
Disc diffusers typically consist of a disc-shaped membrane mounted on a support structure, which allows air to pass through tiny pores. The size and distribution of these pores determine the bubble size:
Fine bubble diffusers produce smaller bubbles for higher oxygen transfer efficiency.
Coarse bubble diffusers produce larger bubbles that are suitable for mixing and preventing sludge settling.
Key Benefits of Disc Diffusers:
High oxygen transfer efficiency – reduces energy consumption in aeration systems.
Chemical and fouling resistance – membranes are often made of EPDM, silicone, or polytetrafluoroethylene(PTFE) to withstand harsh wastewater environments.
Durability and low maintenance – long-lasting components suitable for continuous operation.
Disc diffusers are widely used in municipal and industrial wastewater treatment plants, aquaculture systems, and other applications where water oxygenation is critical. Choosing the right diffuser depends on factors like water depth, flow rate, and treatment objectives.
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2. How Does a Disc Diffuser Work?
A disc diffuser works by introducing air into water through a perforated or porous disc-shaped membrane, creating bubbles that transfer oxygen into the water. This process supports aerobic biological treatment, which is essential for breaking down organic pollutants in wastewater.
Step-by-Step Operation:
• Air Supply: Compressed air from a blower or compressor is delivered through piping to the diffuser.
• Air Distribution: The air enters the disc diffuser, which is typically installed at the bottom of a tank or basin.
• Bubble Formation: Air passes through the membrane's pores, forming fine or coarse bubbles.
• Oxygen Transfer: As bubbles rise through the water, oxygen dissolves into the water, increasing the dissolved oxygen (DO) levels.
• Mixing and Treatment: The rising bubbles create water circulation, promoting uniform mixing and ensuring microorganisms efficiently treat the wastewater.
In essence, the disc diffuser converts energy from compressed air into efficient aeration, enabling microbial populations to thrive and effectively treat wastewater.
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3. What Materials Are Used for Disc Diffuser Membranes?
The performance of a disc diffuser largely depends on the membrane material:
• EPDM membrane – cost-effective, good balance of durability and flexibility.
• PTFE membrane – excellent chemical resistance, long service life, reduced fouling.
• Silicone membrane – high elasticity, stable performance in low-temperature conditions.
AquaSust develops its own advanced membrane formulations and operates a dedicated membrane production line, ensuring consistent quality and long-term reliability.
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4. How to Choose the Best Disc Diffusers for Wastewater Treatment?
When selecting a disc diffuser, consider the following factors:
• Size options: 9 inch disc diffuser and 12 inch disc diffuser are most common.
• Membrane material: choose based on water quality and chemical resistance needs.
• Airflow range: match the diffuser capacity with system oxygen demand.
AquaSust provides customized recommendations to ensure the right diffuser is selected for your specific project.
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5. What is the Difference Between A Disc Diffuser and A Tube Diffuser?Disc diffusers are flat, circular membranes that produce fine or coarse bubbles, offering high oxygen transfer efficiency and precise aeration, making them ideal for municipal and industrial wastewater treatment. Tube diffusers are long, cylindrical tubes that generate larger bubbles and stronger mixing, suitable for tanks requiring sludge suspension or easy retrofit installation. The choice depends on whether your priority is energy-efficient oxygen transfer (disc diffuser) or mixing and flexibility (tube diffuser).
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6. How to Calculate Diffuser Quantity in An Aeration Tank?
This involves the air flow rate, oxygen demand, tank size, and diffuser efficiency. You can also get professional guide from our blog How to Calculate the Diffuser Quantity in Aeration Tank?
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7. What If An Aerator is Clogged?This does happen, especially if there is uneven bubbling and fouling of the aeration diffusers, or increased back pressure and reduced oxygen delivery throughout the system. AquaSust recommends that you shut down the system, clean and reinstall these diffusers. Then you can resume their operation by performing an air supply test.
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8. What Factors Affect the Disc Diffuser Price?
The price of disc diffusers can vary depending on several factors:
Membrane material – EPDM, PTFE, or silicone
Diffuser size – 9-inch, 12-inch, or custom size
Quantity ordered – bulk pricing is available for large-scale projects
Application requirements – special wastewater conditions may require tailored solutions
AquaSust provides cost-effective products by leveraging its in-house membrane production line and optimized manufacturing processes.
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9. How Does AquaSust Supply Aeration Diffuser?
As a global aeration diffuser supplier, AquaSust offers flexible business models to meet the diverse needs of engineering companies, EPC contractors, and wastewater treatment plant operators:
• Direct factory supply – ensuring competitive pricing and fast delivery.
• OEM/ODM cooperation – customized branding and product design.
• Project-based solutions – tailored support for engineering projects.
• Distributor partnerships – long-term cooperation with regional distributors.
This customer-oriented approach allows us to serve both small projects and large-scale wastewater treatment systems worldwide.
We're professional disc diffuser manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale custom made disc diffuser from our factory.
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Wholesale at Factory Prices
Order standard products directly from our factory with flexible MOQ and reliable worldwide shipping.
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OEM & ODM Service
Custom designs and private labeling supported. Co-develop new products with customers in our in-house R&D lab.
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Project Solutions
We offer turnkey wastewater treatment and RAS system project solutions from design to installation support.
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Join our dealer network for regional exclusivity, marketing assistance, and discounted rates.
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