SSI ECD215 Disc Diffuser System – Advanced Aeration for Biological Wastewater Treatment
Superior Aeration Technology for Global Wastewater Solutions
Aeration is a process that facilitates intense contact between air and water, aiming to dissolve oxygen from the air into the water or release unwanted gases and volatile substances from the water into the air. In other words, it is a method to enhance mass transfer between gases and liquids. It also serves other important functions, such as mixing and stirring.
During aeration, oxygen from the air is transferred into the water, moving from the gas phase to the liquid phase through mass transfer. One of the most widely applied theories explaining this mass transfer diffusion is the Two-Film Theory, proposed by Lewis and Whitman.
The Two-Film Theory posits that at the "gas-water" interface, there exist a gas film and a liquid film. Beyond these films, the air and water flow in a turbulent state, while between the gas and liquid films, the flow is laminar, with no convection. Under certain conditions, pressure gradients and concentration gradients develop. If the oxygen concentration in the liquid film is lower than the saturation concentration of oxygen in the water, oxygen from the air continues to diffuse inward through the liquid film into the water body. Thus, the liquid and gas films act as barriers to oxygen transfer.
This is the Two-Film Theory. Clearly, the most effective way to overcome the resistance of the liquid film is to rapidly renew the "gas-liquid" interface.
Aeration and mixing achieve precisely this. Specific approaches include:
Reducing bubble size
Increasing the number of bubbles
Enhancing liquid turbulence
Increasing the installation depth of aerators
Prolonging the contact time between bubbles and the liquid
Aeration equipment is widely used in wastewater treatment precisely because it implements these principles.
Key Features & Benefits
Technical Specifications
| Model |
ECD215(7'') |
ECD/AFD270(9") |
ECD/AFD350(12") |
| Active Surface Aera(m2) |
0.0225 |
0.0375 |
0.065 |
| Size |
7(215mm) |
9(251mm) |
12(330mm) |
| Design Flow(m3/hr) |
0.5-2.5 |
2.5-5.0 |
4.0-8.3 |
| Membrane Thickness(mm) |
2 |
2 |
2 |
| Hole size(mm) |
1or2mm |
1or2mm |
1or2mm |
| Slit Quantity |
3900 |
6600 |
10155 |
| SOTE%(4.5M Water Depth) |
22-40 |
31-59 |
35-59 |
| Drag Loss(pa) |
1285-2124 |
2200-4100 |
2000-4400 |
| Service Life(YEAR) |
≥5 |
≥5 |
≥5 |
(Note: Exact values depend on system configuration. Contact SSI for detailed specs.)
Applications:
Fine Bubble Disc Diffuser - DUBHE DUDS
The Fine Bubble Disc Diffuser is a unique product made by DUBHE, represented by its model number DUDS, and it originates from China. It features an impressive hole quantity of 3500, and it has a SOTE value of between 22-59%. This product is shaped like a disc, and it has an air consumption of 0.2-0.6m3/min. It is made with high quality EPDM material.
This Fine Bubble Disc Diffuser is perfect for a variety of applications, such as wastewater treatment, aquaculture, municipal water treatment, fish farming, industrial process water, and more. It is incredibly efficient and energy-saving, making it ideal for both commercial and residential use. It is also extremely durable, making it the perfect choice for long-term, reliable operation.
The Fine Bubble Disc Diffuser is a top choice for wastewater treatment and other water-related applications. With its impressive hole quantity, SOTE value, and air consumption, it is one of the most effective products on the market. It is also very affordable, making it an excellent option for any budget. With its superior performance and quality, it is no wonder that the Fine Bubble Disc Diffuser by DUBHE DUDS is a top choice for wastewater treatment and other water-related applications.
Why SSI is the Global Choice?
Proven reliability in thousands of installations worldwide.
Customizable solutions for any wastewater treatment need.
Lower lifecycle costs due to reduced maintenance and energy consumption.
For efficient, long-lasting aeration in biological treatment plants, the SSI ECD215 Disc Diffuser System delivers unmatched performance.
FAQs
Q: Why choose SSI ECD215 for biological treatment?
A: The high SOTE and uniform bubble distribution enhance microbial activity, improving BOD/COD removal in wastewater.
Q: How does PTFE coating improve efficiency?
A: It reduces fouling, membrane hardening, and DWP fluctuations, ensuring stable performance over time.
Q: Is remote monitoring available?
A: Yes! SSI Telemetry provides real-time data on airflow, DWP, and system health, reducing downtime.
Q: Can SSI assist with system design?
A: Absolutely! SSI offers full engineering support, including 3D modeling and hydraulic simulations.
Q: What markets does SSI serve?
A: SSI systems are widely used in Saudi Arabia, Malaysia, Indonesia, Brazil, and other regions with stringent wastewater regulations.
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