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)

In 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.

MOST SYSTEMS REGULATE BUBBLE SIZE AND DURABILITY USING

MEMBRANES

• EPDM / Armor-Coated™ EPDM
• Standard or High-Temp PU
• EDI-exclusive Matrix™ / MatrixPlus™
• Silicone
• Specialty Polymers

…WHICH ARE APPLIED TO AIR-DISTRIBUTING

DIFFUSERS

FlexAir® Pro Fine-Bubble

• FlexAir Pro Tube
• FlexAir Pro Panel
• FlexAir Pro Disc

FlexAir® Basic Fine-Bubble

• FlexAir Basic 9-Inch Solvent-Welded Disc

CoarsAir™ Coarse-Bubble

• CoarsAir Hex
• CoarsAir Max
• CoarsAir Wide-Band (SS)
• CoarsAir PermaCap
• CoarsAir FlexCap
• CoarsAir AirCone

…THAT ARE MOUNTED IN SYSTEM-FRIENDLY

CONFIGURATIONS

• Fixed Grid configurations
• ModuleAir™ retrievable configurations
• EDI-exclusive StreamLine®

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

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. EDI diffused aeration products have been installed in over 8,000 aeration systems in over 100 countries serving over 400 million people.