aeration system Articles

  • Post-Treatment Aeration - Hancock Co., MS

    In-line Aeration System Provides Required Level of Dissolved Oxygen in Pressurized Effluent Line Hancock County, ...


    By Mazzei Injector Company, LLC

  • Turbulence in continuous flow surface aeration systems

    Turbulence characteristics in an optimal continuous surface aeration system were investigated in this study. The experimental system consists of a rectangular tank, where flow is driven by equally spaced aerators placed on the liquid surface. The mass-transfer coefficient and turbulent parameters at the tank's inlet and outlet were measured to enable analysis of their interdependent ...


    By IWA Publishing

  • 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

  • Exploring the potential of dynamic air supply models to evaluate control strategies: the experience at the Girona WRRF. Proceedings ICA2017

    Abstract: A model-based treatment performance and energy audit of the Girona WRRF in Spain was conducted using advanced and fully dynamic air supply models. The focus of the study was on the aeration system, which represents 63% of the plant’s energy consumption. A dynamic model consisting of a process, a realistic controller, and a very detailed air supply model, was developed and ...


    By inCTRL Solutions Inc.

  • Towards advanced aeration modelling: from blower to bubbles to bulk. Proceedings WWTmod2016

    Abstract: The complexity of the whole aeration system (blowers to bubbles to bulk) has been neglected for far too long in the modelling of Water Resource Recovery Facilities (WRRF). We still use simplistic basis models extended with empirical relationships. The reason is that many of the mechanisms are very complex in nature and require significant research efforts. This contribution highlights ...


    By inCTRL Solutions Inc.

  • 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

  • Deep Thoughts

    In viewing a presentation for a conventional jet aeration system or a Slot Injector™ aeration system, typically there will be a list of life cycle benefits which include energy savings, capital cost savings, and small plant footprint to name ...


    By KLa Systems, Inc.

  • Key Design Parameters for a Jet Aeration System

    Three Questions To Answer When Adding A New Aeration System Installing an aeration system for your industrial wastewater treatment plant can be a complex process. To make it more efficient, it is important to provide the correct information to your aeration system supplier from the very beginning. Here are three simple questions you should be able to answer when your aeration supplier ...


    By KLa Systems, Inc.

  • Modelling of Aeration Systems at Wastewater Treatment Plants

    Abstract: A model for the response time of aeration systems at WWTPs is proposed. It includes the delays caused by the air supply system (consisting of blowers, throttles and pipes), the rise time of the air bubbles and all control loops except the master DO controller. Beside a description of the required step-change experiments, different approaches for model calibration are given depending on ...


    By inCTRL Solutions Inc.

  • Energy, cost and design aspects of coarse- and fine-bubble aeration systems in the MBBR IFAS process

    With the MBBR IFAS (moving bed biofilm reactor integrated fixed-film activated sludge) process, the biomass required for biological wastewater treatment is either suspended or fixed on free-moving plastic carriers in the reactor. Coarse- or fine-bubble aeration systems are used in the MBBR IFAS process. In this study, the oxygen transfer efficiency (OTE) of a coarse-bubble aeration system was ...


    By IWA Publishing

  • Improving Efficiency and Reducing Energy and Maintenance Costs in Aeration Systems

    Energy costs for operating an aeration system in a biological wastewater treatment plant often times exceeds 75% of the total energy costs for the plant. Adding in blower and diffuser maintenance costs, Aeration Systems are easily the most costly portion of the treatment process, many times consuming so many resources that other parts of the plant may not be properly maintained or operated. By ...

  • Development of a model for activated sludge aeration systems: linking air supply, distribution, and demand

    During the design of a water resource recovery facility, it is becoming industry practice to use simulation software to assist with process design. Aeration is one of the key components of the activated sludge process, and is one of the most important aspects of modelling wastewater treatment systems. However, aeration systems are typically not modelled in detail in most wastewater treatment ...


    By IWA Publishing

  • Small Space, Big Impact - Coldwater, Michigan - Case Study

    Application When the Coldwater Board of Public Utilities received notice of a surprise change to ammonia permit limits, they faced a challenge. With limited budget and no room to add tanks at their wastewater treatment facility, the only viable option was to improve the performance of the IFAS process. While IFAS has been a proven approach to problems like this, the Board issued an additional ...


    By Brentwood Industries, Inc.

  • A Comprehensive Aeration System Model for WRRF Design and Control. Proceedings WEFTEC.15

    Abstract: During the design of a water resource recovery facility (WRRF), it is becoming industry practice for process engineers to use simulation software to assist with the design of the plant and its aeration system. The aeration process is one of the key components of the activated sludge process, and as such, is one of the most important aspects of modeling wastewater treatment systems. A ...


    By inCTRL Solutions Inc.

  • Development of a model for activated sludge aeration systems: Linking air supply, distribution, and demand. Water Science & Technology

    Abstract: During the design of a water resource recovery facility, it is becoming industry practice to use simulation software to assist with process design. Aeration is one of the key components of the activated sludge process, and is one of the most important aspects of modelling wastewater treatment systems. However, aeration systems are typically not modelled in detail in most wastewater ...


    By inCTRL Solutions Inc.

  • Aquarius Provides Customizable, Retrievable Aeration Systems

    One of the advantages of working with a smaller U.S.-based provider like Aquarius Technologies is its ability to tailor solutions to your needs. A case in point is an industrial plant that required an aeration system that would be easy to service. Aquarius routinely provides fine-bubble retrievable aeration grids for both industrial and municipal applications. However, some industrial wastewater ...


    By Aquarius Technologies, LLC

  • Floating Lateral Successful Operations

    EDI Advanced Technology lagoon aeration systems offer robust solutions for severe weather operations. EDI personnel are continuously asked about operation of our floating lateral systems in cold weather conditions, and in some cases very hot or sunny weather conditions. EDI offers a wide range of Total Lagoon ...

  • Case study - Mazzei airjection aeration system installed in Alabama Field Erected WWTP

    Activated Sludge Treatment in a Municipal Sewage Treatment Plant. Huntsville, AL The Problem: 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. ...

  • Over 40% Energy Savings per Month: Jet Aeration Upgraded to EDI Fixed Grid Fine Bubble System

    Conversion of jet aeration to EDI diffuser aeration system Contract wastewater operators Alliance Water Resources (AWR) for the City of Bowling Green, MO desired to reduce overall operating costs at the facility. The existing positive displacement blowers, jet aeration system and motive mixing pumps were targeted for energy and operation evaluation and potential upgrade. To achieve these ...

  • Assessment of diffuser pressure loss on WWTPs in Baden-Württemberg

    Aeration of activated sludge is a critical treatment step for the operation of activated sludge plants. To achieve a cost effective treatment process, assessing and benchmarking of aeration system performance are important measures. A simple means of gauging the relative condition of a fine bubble diffused aeration system is to evaluate the pressure loss of the diffusers as oxygen transfer tests ...


    By IWA Publishing

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