We support engineers from the first design, contractors with the easiest installation processes, and plant operators over the full life of any aeration project.
That’s our AERATION FOR LIFE™ promise.
Whether municipal or industrial, dischargers can offload their specialized care and maintenance to EDI, for long-term performance and system reliability.
In order to rely on your aeration system, you want it designed by experts to meet your specific needs. For nearly half a century, EDI has been making customized aeration solutions accessible to all wastewater treatment plants with:
- Diffusers that distribute the air (including FlexAir® Pro fine-bubble discs, tubes, and panels; FlexAir® Basic 9-inch solvent-welded discs, CoarsAir™ coarse bubble diffusers, and EDI-exclusive StreamLine™)
- Membranes engineered to regulate bubble size, durability, and compatibility with specific treatment needs (including EPDM, PU, HTPU and EDI-exclusive Matrix™)
- Configurations of aeration platforms designed for optimum efficiency and lowest lifecycle cost (Fixed-Grid or ModuleAir™ Retrievable Configurations)
- Aftermarket Parts and Services to offer efficient installation and maintenance for all brands (through SiteWorks™ field service teams and Aftermarket Parts parts supply)
EDI is proud to be integrated with Nexom. Combining EDI with Nexom technologies, capabilities, and experience provides unique customer specific solutions. The EDI-Nexom team will guide you to a reliable treatment solution that is easy to maintain and operate.
What you’ll find on this page:
- An overview of EDI engineered aeration technologies
- Fine-bubble aeration
- Coarse-bubble aeration
- Installation and maintenance (takes you to our SiteWorks page)
Advanced Aeration
Optimal System Configuration and Design with Disc, Tube, and Panel Diffusers
Industrial Solutions
Design | Installation | Service
Aftermarket Parts
Suppliers of Diffusers, Replacement Membranes, and Specialty Diffuser Items Across All Brands
SiteWorks
System Evaluation | Installation | Maintenance | Service Contracts
High-Efficiency 9-Inch Disc Aeration
Introducing EDI's answer for specifications built around 9-inch solvent-welded disc aeration Learn more...
ENGINEERED AERATION
Our fine and coarse bubble aeration technologies are ready to form an integral part of your biological wastewater treatment systemIn most modern treatment systems, aeration is the critical component…
that adds the required air into wastewater so micro-organisms can break down contaminants and pollutants.
It is basically farming bacteria using air to treat wastewater. But it is more than just adding air to a system, to avoid using more energy than required for each situation and to meet or exceed limits, this biological process is optimized by engineering for desired flow, load, capacity, influent type, treatment process type, desired effluent quality, capital investment, operation costs, and energy savings. Add on our long-term maintenance and upgrade support and your wastewater treatment system will be fully cared for by our Aeration for Life promise. EDI has been providing aeration excellence while pioneering and revolutionizing aeration technologies for nearly half a century – since 1975.
How an EDI Engineered Aeration system works:
MOST SYSTEMS REGULATE BUBBLE SIZE AND DURABILITY USING
MEMBRANES
…WHICH ARE APPLIED TO AIR-DISTRIBUTING
DIFFUSERS
- FlexAir Basic 9-Inch Solvent-Welded Disc
- CoarsAir Hex
- CoarsAir Max
- CoarsAir Wide-Band (SS)
- CoarsAir PermaCap
- CoarsAir FlexCap
- CoarsAir AirCone
…THAT ARE MOUNTED IN SYSTEM-FRIENDLY
CONFIGURATIONS
…AND HAVE ONE POINT OF RESPONSIBILITY THANKS TO OUR
INSTALLATION & MAINTENANCE
Aftermarket Parts is your one-stop online shop for parts for all brands of aeration systems.
Maximum Performance and Flexibility to Optimize Your Aeration System.
Fine bubble aeration is a form of subsurface aeration that introduces air into water via very small (or fine) bubbles (<2mm in size).
The fine bubbles produced from the pores promote oxygen transfer though their higher collective surface area of air-water interface compared to coarse bubble systems; diffusing more air into the wastewater as a result.
The low buoyancy of fine bubbles also contribute to the high oxygen transfer. A slow rise to the surface allows more oxygen to transfer from the bubble, and to dissolve into the water at all levels before reaching the surface.
Fine bubble diffuser configurations are designed to be highly efficient; it provides 6–7 lb/O² hp-h, making it 40–60% more energy efficient than coarse bubble or other types of aeration systems.
Use SiteWorks for your complete single-source easy installation and upgrade to fine bubble aeration from any other system type.
Coarse bubble diffuser systems offer low-maintenance mixing.
Where oxygen transfer isn’t your limiting factor, EDI’s full-range of CoarsAir* coarse bubble diffuser platforms provide mechanical reliability, application flexibility, and ease of installation and maintenance.
The primary advantage of this technology is its robust design and ability to mix heavy concentrations of solids. There are no moving parts in the water and the large bubble orifices can be less prone to clogging; making this a robust solution for difficult aeration/mixing applications
Coarse bubble diffusers get their name from the type of bubble they produce, i.e. greater than 4mmØ bubbles. The diffusers are attached to a PVC or stainless steel air supply line fixed to the bottom of the treatment basin or tank. When large bubbles are released at the bottom, water is pulled toward the surface along with the large bubbles mixing the wastewater in the basin or tank.
*CoarsAir Includes, MaxAir SS and PVC, HexAir, PermaCap and other EDI coarse-bubble technologies
We’ve designed our processes and hardware with you in mind.
From introduction through implementation, we supplement engineers and consultants’ workflow to satisfy your municipal/industrial clients by expediting the entire project, providing superior technologies and offering responsive service throughout.
Allow EDI support you with unique process design and high-value engineered solutions. We offer a wide range of high-quality diffused aeration products that you can trust, and providing optimized energy efficiency, performance, as well as lifelong maintenance and upgrade services for your client.
Submit your RFP
...or simply reach out to our friendly staff and have them walk you through the details we need. Yes, you can get started today!
Design-Support
You receive design support and final design-ready drawings, with the support of our expert engineers who work with you to identify the solution to your wastewater treatment requirements.
We Supply Our Exclusive Technologies
Our exclusive technologies will set your project apart and are delivered to site on time to keep contractors on schedule and accountants happy. Our qualified staff commissions our installations, assuring clients that our technologies work to specification and equipping operators with the knowledge they need from day one.
We stand behind our Aeration for Life™ promise
We will be your partner in treatment, long after the shovels and hardhats have left the site. Our support teams ensure our technologies exceed expectations, and they equip operators with the knowledge they need to keep it that way. Throughout the long life of the technology, our friendly SiteWorks staff is ready to supply any needed service, and likewise our Aftermarket Parts team with the parts you need.
EDI has been leading the wastewater aeration revolution since 1975.
We are focused on helping our municipal and industrial clients manage their environmental impact with the lowest possible lifecycle cost. EDI is recognized for excellence in exports and has received numerous awards including: State of Missouri “Small Business Exporter of the Year” Award and US Dept. of Commerce President’s “E” Award for Excellence.
Founded in 1975 with a focus on Biological Treatment and Advanced Technology Diffused Aeration Systems, the company continues to grow with its diverse product portfolio and unparalleled service capabilities; offering integrated aeration system solutions for Municipal and Industrial Water Reclamation Facilities. The corporate campus in Columbia, Missouri, USA is the R&D, engineering and design management, and manufacturing center for the organization; featuring world-class test facilities for oxygen transfer, material performance, and product design.
EDI continues to support new plant construction, existing facility upgrades, and long-term infrastructure demands on a global scale. To support our global customer base, we have created a network of direct sales representatives and local independent partners. In addition to sales support from the corporate offices, EDI maintains international offices in United Kingdom, Germany, Romania, Mexico, Japan, India, Singapore, and UAE. EDI diffused aeration products have been installed in over 8,000 aeration systems in over 100 countries serving over 400 million people.
In June 2020, EDI integrated into Nexom after having been acquired by KKR and XPV Water Partners. This integration empowers EDI for a much stronger position in the global market with enhanced, synergistic capabilities and a wider range of solutions in our integrated portfolio of biological treatment and filtration technologies.