EDI FlexAir - Model Pro - Fine Bubble Diffuser Systems
From Diffusers
Fine Bubble diffuser systems disperse the diffused gas volume to transfer an equivalent amount of oxygen as a coarse bubble system. The diameter of gas bubble has a dramatic impact on surface area. Comparing 1 cubic foot of air used in fine, medium, and coarse bubble systems demonstrates why fine pore diffusers optimize the use of air and reduce energy consumption. This subsurface aeration technology introduces air into water via very small (or fine) bubbles ( The primary advantage of fine bubble technology is its high efficiency, capable of providing up to 10 lb/O2 Hp-Hr, making it 40–60% more efficient than most other aeration solutions.
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Product Details
The first revolution introduced fine bubble subsurface aeration that distributes air into water via very small (or fine) bubbles (<2mm) whose surface area enables oxygen to transfer to the surrounding water more efficiently.
Nobody is better equipped to show that diffusers are more than their standard oxygen-transfer efficiencies (SOTEs). The next revolution focuses on untapped efficiencies in installation and durability, which dramatically reduce the cost of producing bubbles, meeting your regulatory limits, and running your plant.
Fine Bubble diffuser systems disperse the diffused gas volume to transfer an equivalent amount of oxygen with typical Bubble Size of 1mm – 2.5mm. Application performance is impacted by mixing and installed diffuser density constraints. In a typical wastewater treatment plant, 50%-70% of the energy is consumed by aeration. With so much of the energy use in a WWTP concentrated at the aeration system, it is a logical target for energy conservation. To employ the most appropriate diffuser, a comparison of performance of various diffuser platforms must be considered in the design. The most important performance values include operating pressure and standard oxygen transfer efficiency (SOTE). This requires rational clean water test results under ASCE or equivalent testing procedures. Since the data and calculations in any aeration process optimizations are diffuser platform-specific, it makes selecting the appropriate type of diffuser (tube, panel, or disc) for each project very important.
Submit your RFP today and our on-staff professional engineers can help you size and design a fine-bubble aeration and treatment upgrade to meet your wastewater treatment requirements.
Advantages
- Lowest lifecycle cost of ownership (NPV)
- Efficiencies maximized up to 10 lb / Hp-Hr (3.38 Kg / Kw-Hr)
- Disc, tube, and panel diffusers engineered for your project by EDI experts
- Assembly facilities in the USA, UK, and India
- Diffuser components available for quick shipping from Aftermarket Parts.
- Superior material and robust construction
Features and Benefits
- Low Operating Pressure: Approximately the same as disc and tubes, operating at half the pressure of flat panels, and uses existing blowers.
- Pipe Mounted Above Floor: Prevents solids grit blockage and maintains existing blower pressure.
- Ease of Maintenance: EDI’s economical, reliable, custom-perforated membranes can be maintained by plant personnel, and plant personnel can change them in less than 5 minutes (competing panels’ membrane replacements take hours and some request return to factory).
- Membrane Life: Typical up to 10 years in municipal applications; can be designed for acid cleaning in situ.
- Complete nonmetallic systems available for Industrial or Seawater applications
- Piping: Standard IPS any material – PVC, CPVC, SS, PP, and Fiberglass
- Membrane Options: EPDM, Polyurethane (PU), High Temp Polyurethane, Matrix Plus™, Specialty polymers
- Positive pipe/membrane purge assembly: Same as disc and tubes for most configurations
- Pipe mounted panels offer floor coverage (densities) ranging from 5% to 80%
Available in 7”, 9”, and 12” Disc Diameters for Maximum Project Flexibility; 9” disc being the most popular and widely used across the industry
Features and Benefits of EDI FlexAir® Pro Disc Diffusers
Diffuser Holder
- Factory installed membrane for leak free performance
- Saddle-mount and O-ring seal increases installation efficiency – allows replacing or adding diffuser units without affecting the piping, and ensures minimum field installation time
- Single point membrane seal (E-Z Seal, patented) reduces resealing requirement
- GFPP (Glass Filled Polypropylene) material provides high mechanical, thermal, chemical, and UV resistance
Diffuser Membrane
- Elastomer selected for application needs
- EPDM for general purpose and base product for municipal installations
- Matrix™ PTFE-infused Polyurethane for industrial and extended use -improved resistance to biological & inorganic fouling (Perforation selected for aeration needs – Nano for highest transfer efficiency, Micro for traditional fine bubble efficiency, and high capacity for high airflow applications)
Pipe and Fittings
- Engineered for mechanical and thermal resistance
- 3-inch or 4-inch (90mm and 110mm) distribution laterals
- PVC, CPVC, and SS
- Wall thickness for durability objectives
- Standard IPS size for ease of repair and local availability
- Pressure rated components to applicable ASTM Standards
Joints
- Hydrostatic designed flanged joints ensure tight seal and high mechanical strength
Supports
- GFPP SuperStrut™ for installation efficiency and strength
- SS (Stainless Steel) support optional
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