• Case Study: Mazzei AirJection® Aeration System Solves Odor And Nutrient Problems For California Carrot Packing Plant A carrot packing plant was having severe odor problems due to septic conditions in their truck washout water holding lagoon. In addition, nutrient and nitrogen levels were becoming an issue for land application of the wastewater for crop production. By Mazzei Injector Company, LLC
  • White Paper: Wastewater Lagoons - A New Aeration Concept
    White Paper: Wastewater Lagoons - A New Aeration Concept The use of wastewater treatment lagoons, or stabilization ponds, is a common practice for rural municipalities and industrial facilities. Through the years there have been numerous designs for these ‘sludge settling basins,’ ranging from facultative, partial aerated, and fully aerated systems. By Jim Dartez, RELIANT Water Technologies
  • Seepage Water Treatment: ZS Screw Blower Supplies Bacteria With Air
    Seepage Water Treatment: ZS Screw Blower Supplies Bacteria With Air In the seepage water treatment installation at the Münster waste management center, a screw blower from Atlas Copco supplies aerobic bacteria with air. The low-maintenance technology and the integrated frequency inverter were the deciding factors to use the energy-efficient ZS 55+ VSD.
  • Case Study: Aerator/Mixer System Gives China WWTP Trouble-Free Performance
    Case Study: Aerator/Mixer System Gives China WWTP Trouble-Free Performance Aeration Industries International, Inc. is playing a key role in cleaning up water worldwide to help preserve the earth’s most precious resource — water. When the Chinese city of Lin An planned an expansion to their oxidation oval system, officials were looking for a new type of aeration system that would offer process performance and trouble free operation. The company's AIRE-O2 TRITON® process aerator/mixers were the ideal solution for the Lin An wastewater treatment facility.
  • Case Study: Mazzei AirJection® Aeration System Installed In Alabama Field Erected WWTP A design/build contractor needed a quiet, efficient aeration system for a 250,000 GPD field erected WWTP. This plant was to be located adjacent to a school. A restriction on ambient noise at the location of the proposed WWTP required a quiet aeration process. By Mazzei Injector Company, LLC
More Case Studies....


High Volume Aerator

High Volume Aerator

Otterbine’s experience in wastewater treatment is obvious in the performance and results delivered by our surface and subsurface industrial aeration systems.
Aeration Works Division

Aeration Works Division

The Aeration Works Division was created to give operators of aeration systems a source for fast, reliable installations and maintenance. Made up of experienced installers and field service professionals, the Aeration Works Division are experts at the installation and maintenance of EDI aeration systems.
Biolac® System - An innovative aeration process for biological treatment

Biolac® System - An innovative aeration process for biological treatment

The Biolac® Wastewater Treatment System uses low-loaded activated sludge technology, high-efficiency moving aeration chains that suspend submerged fine-bubble diffusers, and a simple basin construction.
Sub-Surface Aeration: Aspirator

Sub-Surface Aeration: Aspirator

The Aspirator transfers oxygen from the water’s surface into the water column through a venturi tube, creating no surface spray. (Available in floating Triton and subsurface Sub-Triton configurations.)
Otterbine Fractional Series Aerating Fountain & Mixer Line

Otterbine Fractional Series Aerating Fountain & Mixer Line

Otterbine’s 1/2HP Fractional Series Aerating Fountain and Mixer line includes 4 spray patterns and a horizontal mixer – the only unit like it on the market today!

Aqua-Jet<sup>®</sup> SS-PW Aerator for Drinking Water Applications

Aqua-Jet® SS-PW Aerator for Drinking Water Applications

The Aqua-Jet® surface mechanical aerator, manufactured by Aqua-Aerobic Systems, has been approved by Underwriters Laboratory (UL) to meet ANSI/NSF STANDARD 61 requirements for use in potable water applications.

Argos® Sequencing Batch Reactor (SBR)

Argos® Sequencing Batch Reactor (SBR)

Gain greater process flexibility, simplicity and capital equipment savings at your wastewater treatment plant with Aeration Industries’ new Argos™ Sequencing Batch Reactor. Utilizing a uniquely engineered gear driven decanter and advanced Aire-O2 Triton® process aerator/mixer, this SBR system is ideal for industrial and municipal wastewater treatment facilities looking for a user-friendly, energy efficient solution.
Aire-O<sub>2</sub>® Series 275 Aspirator Aerator

Aire-O2® Series 275 Aspirator Aerator

The AIRE-O2® 275 Aspirator Aeration is an electric motor-driven propeller-type horizontal aspirating aerator designed for the economy minded customer.
More Products & Services...


Dif-Jet Gas Mixing Aerator Product Video

Dif-Jet Gas Mixing Aerator Product Video

This video shows how Dif-Jet™ wastewater aerators from Fortrans are energy efficient, non-fouling, and can be used with air or pure oxygen for applications requiring mixing of air – oxygen or ozone into water.

More Videos...


  • Aqua-Aerobic Systems, Inc.
    Aqua-Aerobic Systems, Inc.

    Since 1969, Aqua-Aerobic Systems, Inc. has been a leader in the design and manufacture of wastewater treatment equipment and systems for both municipal and industrial markets, worldwide.

  • RWL Water Aeromix
    RWL Water Aeromix

    AEROMIX Systems Incorporated has been designing and manufacturing rugged and reliable water and wastewater treatment equipment since 1987. Our company has been awarded contracts for aeration and treatment system projects with many prominent companies and organizations.

  • RELIANT Water Technologies
    RELIANT Water Technologies

    Reliant Water Technologies is a global marketing company that supplies high quality, one-of-a-kind products to the water and wastewater treatment industries.

  • Otterbine Barebo, Inc.
    Otterbine Barebo, Inc. Since 1952 when the first Otterbine was introduced to the market it had been engineered to operate and perform in the most difficult of environments. From the days of waste water treatment, to today when our products meet the requirements of virtually every market that has water quality management needs – we’ve continued to manufacture our products to the highest standards and implement rigorous third party performance testing.
  • Fortrans, Inc.
    Fortrans, Inc.

    Fortrans offers new innovative technology for wastewater aeration and other applications requiring a non-fouling method of mixing and infusing gases with water. Our patent pending Dif-Jet™ technology is versatile and scalable to meet the needs of municipal and industrial wastewater treatment operators.

  • Xylem Inc.
    Xylem Inc.

    Xylem Inc. is the world’s largest provider of water and wastewater treatment solutions, and a leading provider of pumps and related technologies for industrial, commercial and municipal customers

  • Mass Transfer Systems
    Mass Transfer Systems Since 1984, Mass Transfer Systems (MTS) has been supplying jet aeration and mixing systems to industries and municipalities throughout the world. The majority of our product consist of "engineered systems" for biological and other waste treatment processes and a variety of industrial mixing applications
  • KLa Systems
    KLa Systems

    KLa Systems is a company involved in making the world's waterways cleaner. We are an equipment supplier specializing in custom designed mixing and aeration technologies for biological wastewater treatment processes.

  • Atlas Copco Airpower Compressor Technique
    Atlas Copco Airpower Compressor Technique


    Atlas Copco is an industrial group with world-leading positions in compressors, construction and mining equipment, power tools and assembly systems. The Group delivers sustainable solutions for increased customer productivity through innovative products and services.


  • Sulzer Pumps / ABS USA
    Sulzer Pumps / ABS USA

    ABS is a world-leading Sulzer brand with a long tradition in the wastewater industry. We have more than 100 years of application experience and manufacturing customer-oriented solutions using leading technology. The result is the development and supply of integrated solutions and individual products for use in wastewater collection networks and wastewater treatment.

  • Aerzen

    Aerzen USA was founded in the United States in 1983, and is a wholly owned division of the German manufacturer, Aerzener Maschinenfabrik GmbH. Founded in 1864, Aerzener Maschinenfabrik is a recognized world leader in the production of rotary positive displacement machines since 1868.



A common first step in the secondary treatment process is to send wastewater to an aeration tank. In an aeration tank, bacterium is used to effectively break down pollutants into less harmful components. Wastewater aeration provides the appropriate oxygen level so that aerobic bacteria can thrive in degrading pollutants such as iron and manganese as part of the wastewater treatment process. Aeration can also be used to destroy anaerobic bacteria that perish in the presence of oxygen. Aerobes that can break down pollutants 10-100 times faster than anaerobes are used most frequently.

Aeration is also used to improve waste lagoons and other waterways such as lakes and reservoirs where oxygen deficiency contributes to taste, odor and pollutant problems. Equipment used for wastewater aeration includes low cascades, jet fountains, spray nozzles, blowers, submerged perforated pipe and porous plates or tubes. Whether the water is thrown into the air via a fountain or diffused by air bubbles being blown or drawn into the wastewater in an aeration tank, aeration works by increasing the area of contact between the oxygen in the air and water.

The most common wastewater aeration process in use today is the air diffusion process, where air is introduced from blowers through diffusion tubes suspended in a spiral flow tank, or in some cases, through diffuser plates in the bottom of the aeration tanks.