water tank aerator Articles

  • In the aeration tank, the turbo provides ventilation

    Robust in operation: at Emsbüren, the AERZEN turbo saves quite a lot of energy At Emsbüren wastewater treatment plant, Wasserverband Lingener Land invested in new blower technology for the aeration tank. In comparison with the old assembly, the turbo blower made by AERZEN saves between 100 and 200 kilowatt hours every day. Modernisation of wastewater treatment plants in order to ...

  • Aeration upgrade

    The community of Moscow is located in the northeast corner of Pennsylvania, approximately 10 miles southeast of Scranton. The current WWTP consists of an activated sludge system with three oxidation ditches in parallel operation. The total volume of all three ditches is 0.372 million gal per day (mgd), while the average size of each ditch is 180 ft by 24 ft by 6 ft deep. Previously, two of the ...

  • KLa Jet Aerators/Mixers for Large Diameter Equalization Tanks - Case Study

    Flow Equalization Many municipalities are facing the challenge of having to equalize large volumes of storm water sometimes mixed with raw sewage in order to continuously meet their permit limitations. The equalized flow is stored during a storm event and then slowly diverted to the treatment facility when influent flows return to normal levels.  In the past few years the need ...


    By KLa Systems, Inc.

  • Rectangular tank surface aerators: scale up criteria and energy conservation

    Surface aeration experiments were conducted in two types of rectangular tanks of aspect ratios i.e., length to width ratio (L/W) of 1.5 and 2 and developed simulation equations to correlate the oxygen transfer coefficient, k and power number, P0 with a parameter governing theoretical power per unit volume X. The parameter X is defined as equal to F4/3R1/3, where F and R are impellers’ Froude and ...

  • Vortex in baffled surface aerator

    Baffled surface aerator and mixing tanks are different on the basis of the rotor placement. In mixing tanks, rotors are placed very deep in the tank, thus vortex creation can be prevented by placing the baffles. By definition, rotors are placed at or near the surface of water in surface aeration systems; complete prevention of vortex creation cannot be achieved by installing the baffles. Vortex ...


    By Inderscience Publishers

  • Aeration decreases THMs

    WITH HIGH LEVELS of trihalomethanes (THMs), the township of North Shore in Northern Ontario, Canada, explored treatment options at its Serpent River'Water Treatment Plant. The Serpent River treatment process includes slow-sand filtration. limestone contact tanks, and sodium hypochlorite disinfection. After filtration, sodium hypochlorite is injected into the treatment process before water enters ...

  • How well-mixed is well mixed? Hydrodynamic-biokinetic model integration in an aerated tank of a full-scale water resource recovery facility

    Current water resource recovery facility (WRRF) models only consider local concentration variations caused by inadequate mixing to a very limited extent, which often leads to a need for (rigorous) calibration. The main objective of this study is to visualize local impacts of mixing by developing an integrated hydrodynamic-biokinetic model for an aeration compartment of a full-scale WRRF. Such ...


    By IWA Publishing

  • Greywater treatment with biological aerated filter (BAF) for urban water reuse

    Greywater is an excellent resource for service water in intra-urban reuse. By substituting fresh water with appropriately treated greywater, it is possible to save 30–50% of fresh water. In this paper, an up-flow pilot biological aerated filter (BAF) is tested for the treatment of synthetic greywater and the design parameters are determined. An organic load of 8▒kg▒COD/(m3▒d) allows to achieving ...


    By IWA Publishing

  • Solar grease trap aerator works day and night

    Solar Grease Trap Aeration Systems were developed to solve Odor and Water Quality Problems. Solar Grease Trap Aeration Systems will remove and avoid odor problems while also improving overall water quality without the need for Chemicals, Bacterias, and /or Ozone. This allows the restaurant owner to become more effective and efficient immediately. They can pay off the investment within 1-6 ...


  • 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 ...

  • Cheese manufacturer gets aeration upgrade - Case Study

    Largest Cheese Manufacturer in the UK Gets Aeration Upgrade Dairy Crest Davidstow Creamery in Camelford is the largest cheddar cheese manufacturer in the UK. The process of collecting and processing milk is a 24/7 operation, generating effluent round the clock and needing to be treated and disposed of continuously. Effluent from the cheese-making process contains high fat content and ...

  • What are the parameters of an extended-aeration activated-sludge system?

    The activated sludge process is the most widely used biological water and wastewater treatment. As is well known, by its means, suspended-growth microorganisms are applied to breakdown wastes. Aeration, the mixing of air and a liquid, is the means used to speed the reactions involved. Aeration methods include spraying the liquid into the air; diffusing air into the liquid or agitating the liquid ...

  • Aeration ditch upgrade exceeds expectations - Case Study

    Triton Process Aerators Meets Future Nitrogen Permit Regulations When the a Pennsylvania Sewer Authority was researching methods to improve the dissolved oxygen levels in its wastewater treatment plant’s oxidation ditches in 2001, they decided to totally replace its aging brush rotor system. They replaced the rotors with the  ...

  • Meeting compliance with process aerators - Case Study

    Equipment improves process, saves energy This Florida city is a perfect blend of aging gracefully while staying at the forefront of environmental protection. When this pristine community started experiencing problems with its wastewater treatment system, they found a solution ...

  • CFD predicitons in large mechanically aerated lagoons

    Optimization of the design and operation of large (>500,000 m3) mechanically aerated wastewater treatment lagoons (known as Aerated Stabilization Basins or ASBs) requires a thorough understanding of both the hydraulic and biological processes within the treatment volume. Complex three-dimensional flows existing within these lagoons are difficult to quantify by measurement or simplified analyses, ...

  • High efficient and economic waste water treatment using Standardized Biological Aerated Filtration sBAF (Biofiltration)

    Biological Aerated Filtration (BAF) is a technology which is today successfully used in more than 500 European wastewater treatment plants. Biofiltration is a compact and modular aerated biological reactor which has several advantages compared with classic technologies like activated sludge with its suspended growth. The main advantages of using biofilters with fixed film biomass are the ...


    By Water Experts Germany

  • Aerating recycled water on mushroom composting sites affects its chemical analysis and the characteristics of odor emissions

    Recycled water (RW) containing compost leachate can be a potent source of foul odor on mushroom composting sites. Samples of RW were repeatedly collected from storage tanks and pits of 14 mushroom composting sites in England and Ireland. Relationships between the effects of submerged aeration of the RW, the chemical and microbial characteristics of the RW, and the odors emitted were investigated. ...

  • Effects of the combination of aeration and biofilm technology on transformation of nitrogen in black-odor river

    Excess nitrogen in urban river networks leading to eutrophication has become one of the most urgent environmental problems. Combinations of different aeration and biofilm techniques was designed to remove nitrogen from rivers. In laboratory water tank simulation experiments, we assessed the removal efficiency of nitrogen in both the overlying water and sediments by using the combination of the ...


    By IWA Publishing

  • Why does modern aeration technology make the treasurer happy?

    The aerzen combined system provides optimum efficiencies at the wallau wastewater treatment plant The combination of different technologies for air conveying enablesoptimal energy use of oxygen for biological degradation processes in wastewater treatment plants. Concrete savings resulting from the use  of AERZEN machines demonstrate this in practice at the Wallau plant.  In 2016, ...


    By Aerzen USA Corporation

  • Supplemental aeration nearly eliminates filamentous sludge bulking - Case Study

    The Dubai Investments Park Wastewater Treatment plant in the United Arab Emirates faced challenges in their oxidation ditch due to filamentous sludge bulking, resulting in poor sludge settling in the secondary clarifier. Supplemental aeration was needed to eliminate the filamentous sludge bulking. Challenge: ...

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