VM-BP Disc Air Diffuser

 

The diffuser body is manufactured from high-strength ABS engineering plastic, combined with premium EPDM or Silicone membrane materials. The advanced membrane structure ensures stable air release, excellent chemical resistance, and reliable long-term operation in various wastewater environments.

 

When air is supplied, the microporous membrane expands evenly and creates fine bubbles. When the air supply stops, the membrane automatically closes to prevent wastewater backflow into the aeration pipeline, reducing the risk of clogging and extending the service life of the aeration system.

 

 

 

The VM-BP fine bubble aeration diffuser adopts advanced microporous membrane technology to achieve efficient oxygen transfer and uniform air distribution throughout the treatment tank.

 

Compared with traditional coarse bubble aeration systems, fine bubble aeration technology produces smaller and more stable bubbles, allowing oxygen to remain in contact with wastewater for a longer time. This improves oxygen utilization efficiency and helps maintain sufficient dissolved oxygen (DO) levels for biological microorganisms.

 

The optimized pore structure provides:

• High oxygen transfer efficiency

• Uniform bubble distribution

• Low aeration resistance

• Energy-saving operation

• Stable biological treatment performance

 

The disc air diffuser is widely used as a key component in modern wastewater treatment aeration systems.

 

 

 

The membrane material is one of the most important factors affecting diffuser performance and service life.

VM-BP Disc Air Diffuser offers two membrane options:

 

 

The VM-BP fine bubble air diffuser features an innovative reverse folding membrane structure and non-return design.

When the blower stops working, the membrane automatically closes and prevents wastewater from entering the air distribution pipe system.

 

This design effectively reduces:

• Pipeline blockage
• Internal contamination
• Maintenance frequency

• System downtime

The reinforced membrane structure also prevents membrane detachment during operation, ensuring stable aeration performance under continuous working conditions.

 

 

 

The diffuser support body is manufactured from durable ABS engineering plastic, which provides excellent mechanical strength and corrosion resistance.

Compared with conventional materials, ABS offers:

• Lightweight structure
• High impact resistance
• Excellent chemical stability
• Long-term underwater durability

 

The strong connection design between the diffuser disc and air pipe prevents loosening caused by vibration, ensuring reliable operation in wastewater treatment facilities.

 

 

 

VM-BP Disc Air Diffuser is suitable for various biological treatment processes and wastewater applications.

Typical applications include:

 

Municipal Sewage Treatment Plant：Used in activated sludge aeration tanks to provide oxygen required for microorganisms and improve wastewater purification efficiency.

Industrial Wastewater Treatment：Suitable for food processing wastewater, chemical wastewater, textile wastewater, and other industrial applications requiring efficient oxygen supply.

MBBR Biological Treatment System：Provides continuous oxygen supply for biofilm carriers and improves biological reaction efficiency.

SBR Wastewater Treatment System：Supports intermittent aeration cycles with stable oxygen transfer performance.

Aerobic Biological Tanks：Maintains proper dissolved oxygen concentration and promotes effective organic pollutant degradation.

 

 

 

VM-BP Disc Air Diffuser can be easily integrated into different aeration pipeline systems.

The diffuser supports:

• PVC aeration pipe installation

• ABS air distribution pipe installation

• Stainless steel aeration pipe installation

• Grid-type aeration layout

• Customized diffuser arrangement according to tank dimensions

Professional diffuser layout design can optimize air distribution, improve oxygen transfer efficiency, and reduce blower energy consumption.

The diffuser system is commonly installed at the bottom of aeration tanks to achieve maximum oxygen utilization.

 

 

Material	Model	Outer diameter (mm)	Membrane diameter (mm)	Membrane thickness (mm)	Hole diameter (μm)	Bubble diameters (mm)	Air flow range (Nm3/h)	Average air flow at 4m (Nm3/h)	Max. Working temperature (℃)
ABS+EPDM	D200	215	192	2	80-100	1-3	1-2.5	1.8	80
ABS+EPDM	D260	280	255	2	80-100	1-3	1-4	2.5	80
ABS+EPDM	D300	330	300	2	80-100	1-3	1-6	4	80
ABS+Silicone	D200	215	192	2	80-100	1-3	1-3	1.8	100
ABS+Silicone	D260	280	255	2	80-100	1-3	1-3	2.5	100
ABS+Silicone	D300	330	300	2	80-100	1-3	1-3	4	100

 

 

High Oxygen Transfer Efficiency:The fine bubble generation technology improves oxygen dissolution and supports efficient biological wastewater treatment.

Energy Saving Aeration Performance:Optimized membrane design reduces aeration resistance and helps decrease blower power consumption.

Long Service Life:High-quality EPDM/Silicone membrane materials provide excellent durability under continuous operation.

Stable Air Distribution:Uniform micropores ensure consistent bubble release and prevent uneven aeration.

Easy Maintenance:The modular disc design allows convenient replacement and maintenance.

 

 

 

 

Q1: What is a disc air diffuser used for?

A1: disc air diffuser is used to supply oxygen into wastewater treatment tanks through fine bubble aeration. It is widely applied in biological wastewater treatment systems, activated sludge processes, MBBR tanks, and SBR systems.

 

Q2: What is the difference between EPDM and Silicone membrane diffuser?

A2: EPDM membrane diffuser is commonly used for municipal sewage and general wastewater treatment due to its excellent durability and cost performance.

Silicone membrane diffuser provides better chemical resistance and higher temperature resistance, making it suitable for special industrial wastewater applications.

 

Q3: Why does the diffuser prevent wastewater backflow?

A3: The special non-return membrane structure automatically closes when air supply stops, preventing wastewater from entering the air pipeline and reducing clogging problems.

 

Q4: How long is the service life of the disc air diffuser?

A4: The service life depends on wastewater characteristics, operating conditions, and maintenance. Under normal conditions, high-quality membrane diffusers can provide several years of reliable operation.

 

Q5: Can the diffuser size and material be customized?

A5: Yes. Different diffuser sizes, membrane materials, connection types, and installation layouts can be customized according to project requirements.