self-aspirating aerator 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.

  • 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 ...

  • 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 ...

  • Why it is important to measure Dissolved Oxygen in aeration lanes

    Dissolved Oxygen is a key parameter in the efficient treatment of waste water during the secondary treatment stage; the point at which organic waste is oxidised to form carbon dioxide, water and nitrogen compounds. It is important to act on accurate ...


    By Partech (Electronics) Ltd.

  • Why it is important to measure Dissolved Oxygen in aeration lanes

    Dissolved Oxygen is a key parameter in the efficient treatment of waste water during the secondary treatment stage; the point at which organic waste is oxidised to form carbon dioxide, water and nitrogen compounds. It is important to act on accurate measurements of Dissolved Oxygen in activated sludge plants for the following reasons: To ...


    By Partech (Electronics) Ltd.

  • 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 ...

  • A new Technology for Composting: Suction Aeration for Opening Composting Works

    Cost-efficient solution for smell emission reduction The enormous waste quantities that are produced day by day are one of the most difficult problems for the economy as such, for cities and communities and for private households. Storage capacities for waste are scarce everywhere. Therefore solutions of all kinds that reduce waste quantities or recycle waste materials to be reused in the ...

  • 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 ...

  • Examples of energy self-sufficient municipal nutrient removal plants

    In Austria, two municipal WWTPs (the Strass TP and Wolfgangsee-Ischl TP) operated with nutrient removal and aerobic sludge digestion are now energy self-sufficient. This is the result of a long-standing and on-going optimisation process at both plants including optimal aeration control and control of the aerobic section of the aeration tank to optimise denitrification and prevent degradation of ...


    By IWA Publishing

  • Self-sustained vermicomposting plant at municipal solid waste generation point

    The increase in quantum of Municipal Solid Waste (MSW) generation puts additional burden on MSW and energy management. Out of all the wastes, the biodegradable waste is the worst waste regarding heat generation due to anaerobic conditions of the waste. The expenditure on collection, transportation and disposal of MSW are very high and environmentally unhygienic. The waste can be converted into ...


    By Inderscience Publishers

  • 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. ...

  • 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 ...

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