BOD load Articles

  • Assessment of classical surface organic loading design equations based on the actual performance of primary and secondary facultative ponds

    This article presents results from a performance evaluation of 73 full-scale primary facultative ponds and 37 secondary facultative ponds in Brazil. The data were used to test the applicability of some classical design equations for recommended surface BOD loading rates. The empirical equations proposed by Mara in 1976 and 1987 and the equation developed by McGarry and Pescod in 1970 were ...


    By IWA Publishing

  • Risk analysis of seasonal stream water quality management

    Seasonal discharge programs, which take advantage of temporal variation of stream assimilative capacity, are cost effective. However, these seasonal discharge control programs should not increase the risk of water quality violations. A method is presented to estimate the allowable pollutant loads under both seasonal and non-seasonal discharge control programs for a single discharger that ...


    By IWA Publishing

  • Risk analysis of seasonal stream water quality management

    Seasonal discharge programs, which take advantage of temporal variation of stream assimilative capacity, are cost effective. However, these seasonal discharge control programs should not increase the risk of water quality violations. A method is presented to estimate the allowable pollutant loads under both seasonal and non-seasonal discharge control programs for a single discharger that ...


    By IWA Publishing

  • Project Background & Challenges, Wilmington, Vt Case Study

    A variety of factors can cause engineers to rethink capacity expansion when it comes to getting more out of your wastewater treatment plant (WWTP). These can include anything from physical footprint and costs, all the way to the level of treatment desired and power demands for operations. On a very basic level, the simple matter of real estate can make or break the feasibility of a wastewater ...


    By Nexom

  • Case study: Pulp & paper plant

    OverviewEuropaper produces tissues paper for Industrie Cartarie Tronchetti, which has its own branch (Foxy). Changes in the paper production were followed by an increase of the BOD load in the wastewater. Therefore the existing water treatment plant had to be upgraded. RequirementsAn increased BOD load in the wastewater, caused by a conversion of production, required an ...

  • CH#970- Rotating Biological Contactors

    Waste Type: Municipal Flow: 0.99 MGD Problem: Increases in BOD loadings had created a burden for this municipal plant and the operator in charge. Grease build-up had accumulated in the lift stations and a white filamentous film had developed on the RBC's. The plant settled poorly and there was a great deal of foaming on the ...

  • Europaper, Italy A Case Study

    Case Study: Pulp & Paper PlantClient: Siemens Water Technologies – ItalyStart Up: August 2005Capacity: 2,000 m3/d Overview Europaper produces tissues paper for Industrie Cartarie Tronchetti, which has its own branch (Foxy). Changes in the paper production were followed by an increase of the BOD load in the wastewater. Therefore the existing water ...

  • Case study: Municipal WWTP

    OverviewAn urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. RequirementEffluent from the Yavne WWTP used to be discharged into a river which flows into the Mediterranean Sea. Years of inadequate treatment in two extensive ponds caused severe pollution. As a result, the Environmental ...

  • St. Claude wastewater case study

    The dairy plant located in St. Claude, Manitoba was facing operational and regulatory pressure due to the significant amounts of BOD it was discharging into the community wastewater system. Levels of BOD discharged from the plant were steadily increasing creating pressures on the Town’s lagoon system, increasing from 450 mg/L in June – November 1990 to 2,512 mg/L in the January ...


    By Nordevco Associates Ltd.

  • WWTP Yavne, Israel A Case Study

    Case Study: Municipal WWTPClient: Municipality of Yavne, IsraelStart Up: September 2005Capacity: 6,000 m3/d Overview An urgent improvement of the effluent quality of the old existing WWTP of Yavne was required by the Environmental Ministry of Israel. Requirement Effluent from the Yavne WWTP used to be discharged into a river ...

  • RUŽOMBEROK Industrial WWTP - Case Study

    Number of Tanks: 4 Total Volume: 10,000 m³ Water Depth: 4.0 m SOTR Standard Oxygen Transfer Rate: 5,095 kgO2/h Total Airflow: 61,680 Nm3/h No. of AEROSTRIP® Diffusers: 3,000 Ružomberok is a city in northern Slovakia with around 30,000 inhabitants. The local WWTP ...


    By Aquaconsult Anlagenbau GmbH

  • Huntington wastewater treatment plant case study

    Project Summary The Huntington wastewater treatment plant (WWTP) on Long Island, New York is challenged with improving its nitrogen removal efficiency in order to maintain compliance with ever-tightening restrictions on discharge loads. In order to meet this challenge the town initiated a collection system bioaugmentation program with the primary objectives of enhancing the nitrogen removal ...

  • Good Preparation and Planning Reduces Wastewater Headaches Associated with Production Outages

    Author’s note: The terms mill and plant are used interchangeably in this article to describe an industrial manufacturing unit, such as a Pulp & Paper Mill, Petroleum Refinery, Chemical Processing Plant, Meat & Poultry Processing, etc. Plant (or mill) outages come in two types – scheduled and unplanned. Scheduled outages are generally annual affairs at roughly the same ...

  • Performance evaluation of a large sewage treatment plant in Brazil, consisting of an upflow anaerobic sludge blanket reactor followed by activated sludge

    The objective of this study was to evaluate the behaviour of a system comprising an upflow anaerobic sludge blanket reactor followed by activated sludge to treat domestic sewage. The Betim Central sewage treatment plant, Brazil, was designed to treat a mean influent flow of 514 L/s. The study consisted of statistical treatment of monitoring data from the treatment plant covering a period of 4 ...


    By IWA Publishing

  • Leachate treatment solution for council – Landfill Site, Camarthenshire

    Plant Equipment: Ocean Professional Nitrification Plant Design Data: Effluent target (NH4-N): <4 Daily flow (m3/day): 120 Ammonia load (kg/day): 6 BOD load (kg/day): n/a Situation and Problem This site comprises of six landfill cells and phase ...


    By EnSo International Ltd

  • Case study - Supplemental aeration system reduces high BOD levels and solves odor issues - Sparta, MI

    The Problem: A leading fruit juice company had expanded over the past ten years and increased wastewater flow from 7,000 to 11,000 gallons per day (gpd), without upgrading its wastewater treatment plant. The existing system consisted of an equalization tank, three conventional aeration tanks in series, and four rotating biological contactors (RBC) in parallel. The plant was able to reduce the ...


    By Mazzei Injector Company, LLC

  • Cold weather ammonia reduction in municipal/industrial treatment plant case study

    Problem During cold weather this municipal wastewater treatment plant with a high percentage of industrial flow from food processing and electronics manufacturing suffered from high ammonia loadings. As temperatures dropped the plant lost nitrification. The objective of this full-scale product application program was to reestablish ammonia oxidation and reduce ammonia-nitrogen in the lagoon ...


    By Bioscience, Inc.

  • Organic matter degradation in a greywater recycling system using a multistage moving bed biofilm reactor (MBBR)

    Greywater is an important non-conventional water resource which can be treated and recycled in buildings. A decentralized greywater recycling system for 223 inhabitants started operating in 2006 in Berlin, Germany. High load greywater undergoes advanced treatment in a multistage moving bed biofilm reactor (MBBR) followed by sand filtration and UV disinfection. The treated water is used safely ...


    By IWA Publishing

  • The Efficacy of Oxygen Release Compound - A Six-Year Review (PDF)

    Oxygen Release Compound (ORC®) is proprietary formulation of intercalated magnesium peroxide that releases oxygen slowly and facilitates the aerobic degradation of a range of environmental contaminants including petroleum hydrocarbons, certain chlorinated hydrocarbons, ether oxygenates and nitroaromatics. The history of ORC’s introduction and acceptance represents a model for the evolution of an ...


    By Regenesis

  • Beverage Manufacturer to Cut Disposal Cost

    THE PROBLEM A Pennsylvania general contractor with much experience within the beverage industry, saw that water utilization at a major food and beverage manufacturer’s facilities would benefit from an integrated approach to minimizing water consumption, while simultaneously optimizing boiler and cooling water treatment issues.  By adopting such an approach, the contractor planned to offer ...


    By Samsco Corporation

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