lagoon design Articles

  • Tracer studies on an aerated lagoon

    The city of Palmerston North, New Zealand, has two aerated lagoons as its secondary treatment facility. Interest about treatment efficiency led to an investigation into the hydraulics in the second lagoon to determine if further optimisation was viable. A tracer study using rhodamine WT was undertaken to ascertain the stimulus response output. Samples were also taken at 24 points within the ...


    By IWA Publishing

  • Model Benchmarks For Coastal Lagoons

    To promote reliable, real-time management of coastal lagoons, increasingly sophisticated numerical models have been developed within the DITTY project (WP4). While models are diverse in design and scope, i.e. watershed, fluid-dynamics, biogeochemical, all have the same fundamental goal, i.e. to account realistically for the processes that drive the dynamic behaviour in coastal lagoons so that ...


  • Overview of automated lagoon dredging system: design features and requirements

    Liquid Waste Technology (LWT) has pioneered the development of fully automated dredging systems (and radio remote controlled dredging) for the most efficient and safe cleanup of sludge lagoons. These systems are state-of-the-art, and LWT has many successful installations so that reliable operations are the norm. The objectives for most automated dredging systems include: Less human labor ...

  • 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

  • Case study - California vineyard improves sludge movement with aeration

    Overview A California vineyard was faced with the challenge of meeting wastewater treatmentcompliance under a tight deadline defined by local regulators, while receiving ongoingodor complaints from the community. Challenges Extended periods of mismanagement from previous owners left the facility and the wastewater treatment system in disarray. ...

  • Lagoon Maintenance Dredging every Decade

    SRS Crisafulli has discovered the Rural Water Association.  This winter, Troy Fercho, Frank Robinson, Tristan Hoff and I attended shows in North Dakota, Montana, Minnesota, and Idaho.   At these Rural Water Association Trade Shows, we promoted SRS Crisafulli's dredge equipment and rental services to assist communities in managing the long term, low cost ...


    By SRS Crisafulli, Inc.

  • Capturing biogas energy to increase your business profits while safeguarding the environment

    Methane is a biogas produced from swine or cow manure, as well as food processing and meat packing waste. Methane is a natural gas, that when left uncollected, contributes to the harmful greenhouse gases in the earth’s atmosphere. When biogas is captured under a cover and becomes concentrated, it creates a corrosive and toxic byproduct called hydrogen sulfide. The gas generates a rotten egg ...

  • 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, ...

  • Regina shoreline sewage lagoon, Regina, Sask., Canada

    When Stantec Consulting Ltd. of Regina, SK, Canada, won the contract to design a new sewage lagoon for the City of Regina, the site’s history provided a good indication that serious erosion control measures were called for. Constructed in the early 1960s, the Regina Wastewater Treatment Plan uses a series of lagoons to contain secondary effluent from its sewage treatment operation. With the use ...


    By Presto Geosystems

  • Jet fuel containment lagoon, Pittsburgh Airport, Pennsylvania

    Environmental responsibility takes top priority for the airforce reserve station at the Pittsburgh International Airport fuel facility. Thousands of gallons of jet fuel are stored and pumped each year, posing a significant environmental threat if the fuel was to reach ground water levels. In an effort to minimize storm water damage and environmental impact, engineers designed a detention pond ...


    By Presto Geosystems

  • Floating baffle system improves lagoon efficiency by 90%

    Industries and municipalities that deal with wastewater treatment are concerned with improving the efficiency of their wastewater treatment facilities. Lagoon efficiency, cost effective treatment, and low maintenance are important factors when purchasing treatment upgrades. Environetics, Inc. took these factors inlo consideration when they designed the Director floating baffle System. ...


    By Environetics, Inc.

  • Advanced Lagoon Treatment Technologies for Wastewater Treatment

    Lagoon-based wastewater treatment systems are popular around the world for their simplicity and cost-effectiveness. However, these systems are unable to reliably remove biochemical oxygen demand (BOD) and total suspended solids (TSS) to less than 30 mg/L or achieve nitrification during winter months in cold climates. Several innovative modifications have been developed, which have the potential ...

  • CFD predicitons in large mechanically aerated lagoons

     ABSTRACT 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 ...

  • Regina shoreline sewage lagoon, Regina, Sask., Canada

    When Stantec Consulting Ltd. of Regina, SK, Canada, won the contract to design a new sewage lagoon for the City of Regina, the site’s history provided a good indication that serious erosion control measures were called for. Constructed in the early 1960s, the Regina Wastewater Treatment Plan uses a series of lagoons to contain secondary effluent from its sewage treatment operation. With the use ...


    By Presto Geosystems

  • Duck Pond Cellars (Lagoon Cleanout) - Case Study

    TenCate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE CHALLENGE Wineries around the world utilize waste lagoons to deposit the waste products from the wine making process.  This includes the pulpy residue, known as "pomace", and the ...

  • Comparison between different modelling approaches for coastal lagoons

    To promote reliable, real-time management of coastal lagoons, increasingly sophisticated numerical models have been developed within the DITTY project (WP4). While models are diverse in design and scope, i.e. watershed, fluid-dynamics, biogeochemical, all have the same fundamental goal, i.e. to account realistically for the processes that drive the dynamic behaviour in coastal lagoons so that ...


  • Remediation of hydrocarbon contaminants from oil lagoons and refinery waste - case study

    In 2007 econ delivered an indirectly heated thermal desorption plant to a client in Kuwait. The plant is de-signed to treat various types of waste with hydrocarbon contaminant content. In particular refinery waste, oil lagoons and down hole drilling waste. The aim is to recover the waste hydrocarbons from the soil/sand and remediate the lagoons of their contaminants.  Due to the natural ...


    By econ industries GmbH

  • Removal of sludge deposits from the floor of a lagoon case study

    Massive fat oil and grease sludge deposits on the floor of the lagoon were contaminating the lagoon in the following pictures. The depth of these deposits was such that they were protruding through the surface of the water. The customer required their removal. The surface aerator installed for the purposes of mixing and oxygenation can be seen in the picture. In order to deal with these deposits ...


    By Bio Systems Europe

  • Get more for less: cost-effective solutions for lagoon conversions

    As federal and state regulatory agencies continue enforcing more stringent nutrient removal policies and increasing the plant capacity of wastewater systems becomes essential, the cost of maintaining a productive wastewater system skyrockets. While pricey, meeting the new goals set by the municipalities and industries is an unavoidable necessity. But, there is an alternative to starting from ...

  • Solutions to expand treatment and disposal capacity of a lagoon facility in environmentally sensitive area

    The Callville Bay lagoon treatment and disposal facility, located in Lake Mead National Recreation Area, is currently operating at more than 85 percent of its capacity and has no capacity for future development demand. There is no volume redundancy for hydraulic dampening or for adequate maintenance. The infiltration pond is currently not functioning. A design analysis was conducted by HDR to ...

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