Fine Bubble Tube Diffuser
Fine Bubble Diffusers are used in STP, ETP, MBBR, SBR, MBR systems to supply oxygen efficiently to microorganisms. They produce fine air bubbles (typically 1–3 mm), resulting in high oxygen transfer efficiency and lower blower power consumption.
Technical Specifications (Disc Type)
Parameter | Specification |
Diffuser Type | Disc Type Fine Bubble |
Membrane Material | EPDM / Silicone |
Support Plate | Reinforced PP (Glass Filled) |
Connector | 3/4″ BSP Male Thread |
Bubble Size | 1–3 mm |
Recommended Air Flow | 2–5 Nm³/hr per diffuser |
Maximum Air Flow | 6–8 Nm³/hr per diffuser |
Operating Pressure | 0.15–0.50 kg/cm² |
Maximum Pressure | 1.5 kg/cm² |
Operating Temperature | 5°C to 80°C (EPDM) |
Oxygen Transfer Efficiency (OTE) | 25–35% (clean water) |
Pressure Loss | Less than 3000 Pa |
Service Life | 5–8 years (depending on wastewater quality) |
Values vary slightly by manufacturer.
Tube Diffuser Sizes
Size | Dimensions | Air Flow |
63 × 620 mm | Short Tube | 2–5 Nm³/hr |
63 × 1000 mm | Standard | 2–7.5 Nm³/hr |
90 × 1000 mm | Heavy Duty | 3–10 Nm³/hr |
Material of Construction (MOC)
- Membrane: EPDM / Silicone
- Body: Polypropylene (PP)
- Body: Polypropylene (PP)
- Thread: 3/4"& 1” BSP Male
- Check Valve: Built-in non-return valve
- Fastening Ring: PP/ABS Lock Ring
Features
- High oxygen transfer efficiency
- Uniform fine bubble distribution
- Low energy consumption
- Anti-clogging slit membrane
- Built-in non-return valve
- Easy installation and replacement
- Suitable for continuous operation
- Resistant to corrosion and biological fouling
Typical Applications
- Sewage Treatment Plants (STP)
- Effluent Treatment Plants (ETP)
- MBBR Reactors
- MBR Systems
- Equalization Tank Aeration