1. Product Introduction
This disc diffuser is made of reinforced PP housing and premium EPDM rubber membrane, providing excellent corrosion resistance, durability, and long service life. With precision perforation technology, the diffuser generates fine and uniform bubbles, greatly improving oxygen transfer efficiency while reducing energy consumption.
| Model | Unit | HQD-215 (7″) | HQD-270 (9″) | HQD-330 (12″) |
|---|---|---|---|---|
| Service Area | m²/pcs | 0.125-0.5 | 0.1875-0.75 | 0.325-1.3 |
| Standard Air Flow | m³/h | 1.5-2.5 | 2.5-4 | 4-6 |
| Air Flow Range | m³/h | 1-5 | 1.5-7 | 2-9 |
| Oxygen Utilization Rate | % | 27-38 | 28-38 | 27-38 |
| Pressure Loss | pa | 2000-4500 | 2000-4300 | 2000-4200 |
| Theoretical Dynamic Efficiency | KgO₂/Kw·h | > 7.0 | > 7.0 | > 7.0 |
| Oxygenation Capacity | KgO₂/h | 0.15-0.35 | 0.3-0.5 | 0.4-0.6 |
| Working Temperature | ℃ | 0-80 | 0-80 | 0-80 |
| No. of Membrane Holes | Pcs | Approx. 4400 | Approx. 6600 | Approx. 11440 |
| Perforation Size | mm | 1 | 1 | 1 |
| Bubble Diameter | mm | 1-2 | 1-2 | 1-2 |
| Lifespan | – | Designed lifespan: 3–5 years in municipal wastewater | ||
2. Key Advantages
- High Efficiency Aeration: Uniform perforations create fine bubbles, achieving oxygen utilization above 35%.
- Strong Structure: Reinforced PP shell ensures impact resistance and long-term durability.
- Energy Saving: Delivers higher oxygen transfer with lower air consumption.
- Easy Maintenance: Membrane is replaceable and ensures stable performance.
- Wide Application: Suitable for municipal wastewater, industrial effluents, and aquaculture aeration.
3. Technical Specifications
- Housing Material: Reinforced Polypropylene (PP)
- Membrane Material: EPDM Rubber
- Sizes Available: Φ215mm, Φ260mm, Φ300mm
- Connection Type: Thread / Clamp
- Working Temperature: 0~80℃
- Recommended Air Flow: 1.5~12 m³/h
- Oxygen Utilization Rate: ≥35%
4. Application Fields
Widely used in municipal sewage treatment plants, paper making, textile dyeing, food processing, and other industrial wastewater projects. Also suitable for aquaculture ponds, fish farms, recirculating aquaculture systems (RAS), and reservoirs for efficient aeration and oxygenation.
5. Installation & Usage
The diffuser is easy to install and can be connected directly to pipelines with either thread or clamp connections. It is recommended to operate with air blowers or roots blowers. Regular inspection and timely replacement of the membrane are advised to ensure optimal aeration performance.
