aspirator aeration Articles

  • Performance of Floating Horizontal Aerators in Aerated Lagoons and Oxidation Ditches

    INTRODUCTION When selecting aeration equipment to use for a specific application, issues to address include reliability, serviceability, capital cost, system appurtenances, and cost of operation and maintenance. Another important consideration is oxygen transfer rate (OTR). Horizontal floating aerators have relatively high transfer rates and have been used successfully in aerated lagoons and ...


    By S & N Airoflo, Inc.

  • Sustainable wastewater aerator system built for generations

    When building a wastewater treatment facility 26 years ago, officials in the village of Theresa, Wis., decided on an oxidation ditch design and chose Aire-O 2 aspirator aerators based on their flexibility and energy efficiency. Today, several of those aerators are still in use and the treatment facility operates at even more efficient standards using a new line of the "next generation" Aire-O 2 ...

  • Revenue losses averted with Aire-O2® aerators

    The AIRE-O2® aerators maintain good effluent dissolved oxygen residuals Problem In December of 1987, this paper and board mill developed a load problem requiring immediate action: improve wastewater treatment efficiencies fast or slow down mill production to prevent a discharge violation. A slow down would result in significant revenue loss. The southern USA mill’s superintendent said, ...

  • Efficient aeration system boosts energy savings

    A new efficient aeration system saves the Ontario, Ore., wastewater treatment facility $47,000 annually in energy costs. Besides giving this community a financial boost, the new system netted additional equipment cost savings by cutting aeration horsepower by more than half at the plant. The environmentally conscious city, located in the Oregon/Idaho border area, is meeting all of its effluent ...

  • Aeration boosts USA’s largest lagoon system

    The city reports, 'The entire aeration system has surpassed all our expectations.' Problem In 1989, a growing population prompted this northwestern USA community to expand the efficiency and capacity of its wastewater treatment facility. The original unaerated lagoon system had been built in 1967 and had worked adequately for many years. But, the system needed additional treatment ...

  • A perfect pair: SBR designs & advanced aeration technology

    Conventional sequencing batch reactors (SBRs) that utilize diffused-air networks have existed in the U.S. for about three decades now. The reliability of controls and instrumentation has significantly improved in the last 10 to 15 years, and as a result, SBR plant designs are becoming more widely accepted. The attractiveness of their compact layout and ease of operation has also helped increase ...

  • AIRE-O2® Aerators tests number one in three critical areas

    Problem In 1986, this southern USA fine paper mill developed problems on start-up from a Christmas shut-down, requiring quick action to add efficient aeration to its 38 MGD (143,830 m 3) flow. Poor winter treatment, channeling throught the system, and high solids had also been problems. Since the company was committed to preserving the environment, it searched for the best aerators to meet its ...

  • Largest lagoon in North America relies on AIRE-O2® TRITON process aerator/mixer

    'The Triton and AIRE-O2® aeration equipment have surpassed all our expectation.' Problem This western USA municipality has a 494 acre (200 ha) lagoon system. They installed 68 AIRE-O2® aspirator aerators in 1989 into its 7 lagoons. Officials were very pleased with the performance efficiency of the system, especially with the challenge of their huge lagoons and severe winters. With a ...

  • Aerated 44 Acre Lagoon Meets Compliance with Aire-O2 System - Case Study

    The 65 Aire-O2® aerators create a “flow linkage” in the gigantic 44 acre (75 MG) oxidation-like oval lagoon and operate 24 hours/dayProblem This southwestern city experienced overloading problems with its huge 44-acre (75 MG) aerated lagoon. The plant serves a population of 225,000 and also treats industrial wastewater from petroleum ...

  • Case study - Aerated 44 acre lagoon meets compliance with Aire-O2® system

    The 65 AIRE-O2® aerators create a 'flow linkage' in the gigantic 44 acre (75 MG) oxidation-like oval lagoon and operate 24 hours/day Problem This southwestern city’s experienced overloading problems with its huge 44-acre (75 MG) aerated lagoon. The plant serves a population of 225,000 and also, treats industrial wastewater from petroleum refinery, food processing, and ...

  • Case study - Mission accomplished: plant and aeration upgrades to meet growth and lower energy use

    In 2003 this Minnesota city began the process of upgrading its lagoon-based wastewater treatment facility (WWTF) into a new mechanical treatment facility. Nine years and two construction phases later, the city now has a fully operational facility and has upgraded its aeration system to lower energy and maintenance costs. Treatment Process The wastewater ...

  • European processor eliminates maintenance headaches

    Problem Wastewater treatment became a huge headache for this large, European sugar processing company. The plant had installed many different types of aeration equipment in its activated sludge, aerated lagoon system. The company was dedicated to meeting all the environmental standards for its country. In their quest to find the best equipment, they had tried ...

  • Case study - Built for generations

    When building a wastewater treatment facility in 1984 officials in a Wisconsin village decided on an oxidation ditch design and chose Aire-O2®Aspirator aerators based on their flexibility and energy efficiency. Today, several of those aerators are still in use and the treatment facility operates at even more ...

  • Food processor achieves 99+% removal rates

    ' AIRE-O2® units are some of the best aeration equipment in the market.' Problem This southern food processor was plagued by multiple problems in its wastewater treatment plant. The extended aeration, activated sludge system had inadequate oxygen transfer and poor mixing with its existing aeration system. Installing more did not help. High maintenance costs also were a problem. ...

  • Case study - A Sustainable system to Weather all seasons case study

    Aerator upgrades help wastewater treatment plant survive cold Vermont winters More than two decades ago, cold Vermont winters brought a small Wastewater Treatment Facility to a halt with brush rotor icing problems. A major upgrade that included the Aire-O2® aspirator aeration system ...

  • Case study - Designed for generations

    South Dakota facility retrofits advanced process control system Nearly 25 years ago, the consulting engineering firm Banner & Associate, Inc. designed an efficient wastewater treatment facility for a city in S.D. that featured process control, flexibility and treatment efficiency while minimizing operating and maintenance costs. Key to the system was the ...

  • Getting more for less …15 years later and still going strong !

    ' We’re getting twice the agitation we were before, and for less electricity.' Problem This Northern USA dairy products company always met its wastewater treatment discharge limits. Biological oxygen demand (BOD) was within permit limits. The company tried many methods in treating its three-pond wastewater treatment system: chemicals, filters, surface aeration, and diffused air ...

  • Asian dairy churns out grade AA effluent

    ' The AIRE-O2® aerators have excellent oxygen transfer, easy maintenance and operation.' Problem Founded in 1937, this dairy cooperative located in Asia has played a leading role in the development of the industry in its country. Its mission is to 'supply quality products for safe-guarding the nation’s health' in all its product line. The same attention to quality standards that drives ...

  • Tire maker on treatment track

    ' With reliable operation, low maintenance, & energy usage, this is the system we’ve been waiting for,' reported the engineer Problem This Mexican tire and rubber manufacturer’s extended aeration/activated sludge wastewater treatment plant had difficulty getting reliable aeration in its 0.167 MG (630 m 3) aeration basin. The surface aeration system exhibited continuous and expensive ...

  • Almost 20 years of Aire-O2® operation celebrated by buying more!

    'There is no maintenance with AIRE-O2® aerators …only once a year routine checks,' reports the city. Problem In 1977, a growing population and expanding cheese factory plant that the town received at its treatment plant was causing continuous non-compliance problems for this Midwestern USA community. A plant official reported, 'Because of numerous violations of its discharge permit, the ...

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