bottom aeration Articles

  • The role of aeration in water features

    In warm weather, the surface of your lovely water feature sucdenly develops a green, slimy mass which looks as if it may begin to pulsate, eave the water, and threaten the surrounding countryside, like the monstrous entity in some early Steve McQueen B movie Your instinct may be to use extreme measures - the chemical equivalent of calling in the National Guard for a tactical nuclear strike. ...


    By EP Aeration

  • 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. But the primary reason for these systems is to utilize relatively shallow earthen ponds, or ...


    By Reliant Water Technologies

  • Slowhill Copse UK Aerators - Case Study

    Slowhill Copse Marchwood WTW (Southampton, Hampshire) was originally constructed in the 1960's. The latest upgrade includes an improvement of the existing treatment process to meet the newest requirements. Landustrie supplied sixteen (4 per aeration lane) low speed surface aerators, type Landy-7 complete with drive units, bottom baffles and foundation plates. The Landy aerators dimension ...


    By Landustrie Sneek BV

  • LumenAER Aeration at WWTP in Panama - Case Study

    PROJECT DETAILS LOCATION Villa Mercedes, David City, Chiriquí, Panama CUSTOMER National Council for Sustainable Development (CONADES) SOLUTION LumenAER® Solar-powered Circulators, SB-T Model TECHNOLOGIES Wastewater Aeration Solar-powered circulators reduce ...


    By Fluence Corporation

  • Hotels Embrace Water Sustainability as a Bottom-Line Necessity

    Measures by the major water consumers range from efficient fixtures to in-house desalination In the United States, hotel rooms, pools, landscaping, laundries, and other facilities account for 15% of all water use in institutional and commercial facilities. And globally, many international hotel ...


    By Fluence Corporation

  • Aeration boosts USA’s largest lagoon system - Case Study

    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 ...

  • New Mounting System Allows for Easier and Safer Aeration System Maintenance

    Featured in Environmental Science & Engineering Magazine, February 2018 Edition ...

  • Floating Horizontal Aerators Enhance Eufaula, Alabama Activated Sludge Plant

    The Eufaula, Alabama, wastewater treatment plant (WWTP) is an extended aeration activated sludge facility designed for an average daily flow rate of 2.7 million gallons per day (mgd). Prior to February, 2005 this WWTP used vertical aerators to provide oxygen and mixing in its aerator basins. The plant has two aeration basins, each 1.87 million gallons in volume, which had 160 horsepower (hp) of ...


    By S&N Airoflo Inc.

  • Case study - Mazzei aeration system eliminates odors from winery wastewater lagoons - Madera, CA

    The Problem: A California winery was having odor problems from its wastewater evaporation lagoons. The wash and wastewater from this facility contain large amounts of organic matter. The wastewater is collected and pumped to two main lagoons for evaporation, percolation, and sprinkler irrigation. The high organic loading results in high BOD levels, and over time, the lack of oxygen in the ...


    By Mazzei Injector Company, LLC

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

    '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 ...

  • Optimization of submerged depth of surface aerators for a carrousel oxidation ditch based on large eddy simulation with Smagorinsky model

    This paper is concerned with the simulation and experimental study of hydraulic characteristics in a pilot Carrousel oxidation ditch for the optimization of submerged depth ratio of surface aerators. The simulation was based on the large eddy simulation with the Smagorinsky model, and the velocity was monitored in the ditches with an acoustic Doppler velocimeter method. Comparisons of the ...


    By IWA Publishing

  • Prairie farm rehabilitation administration paper

    The aeration efficiency of two types of aeration devices, air injection and mechanical surface aerators was evaluated in farm dugouts in the Peace River Region of Alberta. The air injection systems were tested using three types of diffusers; open-ended tubing, linear fine bubble diffusers and a membrane diffuser. Our results indicate that without aeration, anoxia can develop in the bottom of ...


    By EP Aeration

  • Mixers and Flowmakers: Flowmakers at the Voreppe WWTP, France

    We have installed 8 flowmakers, type POPL-I, in aeration tanks with bottom aeration – each tank is 9,000 m³. The flowmakers create the specified average velocity of 0.3 m/sec. The sludge is homogenized and sedimentation is prevented. The plant has been in operation since 1994. The units have a total operating time of more than 80,000 ...


    By Landia a/s

  • Taiwan: Water quality key to success in eel farming - Case Study

    A notable Taiwanese scholar discovered the key to growing eel in Taiwan: good water quality. Only Japan had been capable of raising eel in Asia. He reported, 'The number one source of pond pollution is the bottom of the ponds where animal wastes and left-over feed accummulate and deplete oxygen.' This scholar raises Anguilla japonica eels at his research institute’s 2 hectare farm at ...

  • Portugal: P. Japonicus shrimp venture breeds profits - Case Study

    An experimental venture into the P. Japonicus shrimp business has yielded good profits. The shrimp’s market prices are four times better than for P. vannamei , more common in Portugal. The owner believes water quality management is critical. He uses only AIRE-O2® aeration. He explained, 'This species digs into sand and only comes out at night to feed. At night, we need the best ...

  • Mixers and Flowmakers: Flowmakers at the Rugby WWTP, UK

    We have installed 8 flowmakers, type POPL-I, in the aeration tank at the municipal wastewater treatment plant in Rugby Newbold. The flowmakers create the specified velocity in the tanks which are equipped with bottom aeration. At the same time the sludge is homogenized and sedimentation is prevented. The units have operated continuously since 1999. Landia supplied mixers to the sludge tanks in ...


    By Landia a/s

  • Oxygen, the fix for pond problems

    Aeration of a water feature should have three main considerations. These include preventing thermal stratification, balancing the dissolved oxygen levels throughout the water column from the sludge or benthic layer to the surface and balancing temperature levels throughout the water column. Although oxygen transfer from certain methods may be significant, the greatest amount of oxygenation takes ...


    By EP Aeration

  • Case Study: Turun Kakskerta

    The initial situation The condition of the Kakskerranjärvi Lake has worsened over the past decades, mainly due to nutrients produced by agriculture and housing. The lake has been restored using aeration already since 1987. The Kakskerranjärvi advisory board and protective society decided to improve aeration in the lake. It was verified that the nutrients contained in the basal sediment ...


    By W-Rix Ltd

  • UPM, Jämsänkoski mill

    Wastewater Treatment Plant General Information Water flow, Q                  30 000-35 000 m3/d COD load                         50 -70 t/d Incoming water to Equalization ...


    By W-Rix Ltd

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