FOG sewer Articles

  • Identifying and Strengthening “Weak Links” in the Fog Management Chain

    ABSTRACTRecently, EPA presented statistics that cited grease accumulation in sewers as the leading cause of sewer blockages resulting in sanitary sewer overflows (SSOs). Such blockages can be attributed to fats, oils, and grease (FOG) discharged from food preparation and manufacturing facilities, concentrated residential areas, and even single family homes. Municipalities and wastewater system ...

  • Understanding the spatial formation and accumulation of fats, oils and grease deposits in the sewer collection system

    Sanitary sewer overflows are caused by the accumulation of insoluble calcium salts of fatty acids, which are formed by the reaction between fats, oils and grease (FOG) and calcium found in wastewaters. Different sewer structural configurations (i.e., manholes, pipes, wet wells), which vary spatially, along with other obstructions (roots intrusion) and pipe deformations (pipe sags), may influence ...


    By IWA Publishing

  • Combined Sanitary Sewer Overflows (SSO) - Performance Focus: Fats, Oil and Grease (FOG) Reductio Case Study

    In-PIpe Technology Company, Inc., drastically accelerates the natural degradation of fats, oil and grease (FOG) in the collection system, thereby removing blockages and occlusions from the pipe and significantly reducing the occurrence of FOG-related sewer overflows, as well as the requisite equipment and manpower required for the physical removal of these blockages. Since In-Pipe started ...

  • Modeling fats, oil and grease deposit formation and accumulation in sewer collection systems

    Fats, oil and grease (FOG) deposits in sewer systems are responsible for approximately 25% of all annual line blockages in the United States and lead to the release of 3–10 million gallons of untreated wastewater to the surrounding environment. Considerable effort has been made to maintain the conveyance of wastewater by cleaning pipes that have a significant FOG deposit accumulation. Changes ...


    By IWA Publishing

  • Profile: Factors that influence properties of FOG deposits and their formation in sewer collection systems

    The quantification of the factors that may affect the formation of the fat, oil, and grease (FOG) deposits and their chemical and rheological properties were predominantly covered in the paper. The factors included the types of fats used in food service establishments (FSEs) and the types of calcium sources and environmental conditions (i.e. pH and temperature) in sewer systems. These factors are ...


    By IWA Publishing

  • Comply with Permit Levels for Fats, Oil and Grease in Wastewater using Portable IR Analyzers

    Wilks InfraCal TOG/TPH Analyzers provide accurate, on-site analysis to help regulators and industry reduce the discharge of fats, oil and grease in wastewater.  On-site testing with the portable mid-IR InfraCal Analyzer gives results in 10 minutes and eliminates the wait for off-site lab results.  It is simple enough for an operator with minimal training to do the analysis. Stricter ...


    By Spectro Scientific

  • WaterWorld Rapid On-Site Analysis of FOG - Case study

    FOG and Sewer Overflows It is estimated that 23% to 28% of sanitary sewer overflows (SSOs) are due to fats, oils and grease (FOG) or as much as 19 million gallons from 1998 to 2001 (State of North Carolina, 2004). Our increasingly mobile society has led to a decrease in cooking at home and a significant growth in the commercial food sector. This, in addition to other industries that already ...


    By Spectro Scientific

  • FOG Waste receiving and processing facility design considerations

    Fats, Oils, and Grease (FOG) wastes and high-strength wastes (HSW) are frequently received at municipal water resource recovery facilities (WRRFs) as trucked-in wastes. These wastes offer significant benefits in terms of revenue from tipping fees and feedstock for co-digestion in anaerobic digesters that produce biogas, which can be beneficially used as fuel. The number of treatment plants ...


    By IWA Publishing

  • Rapid on-site analysis of fats, oil and grease (FOG)

    It is estimated that 23-28% of Sanitary Sewer Overflows (SSOs) are due to Fats, Oils and Grease (FOG) or as much as 19 million gallons from 1998 to 2001 (State of North Carolina, 2004). Our increasingly mobile society has led to a decrease of cooking at home and a significant growth in the commercial food sector. This, on top of other industries such as metal processors, meat packers, cosmetic ...


    By Spectro Scientific

  • How Much Could You Save by Avoiding a Consent Decree?

    In 2012, St. Louis, MO (Metropolitan St. Louis Sewer District) set a record for the most expensive sewer consent decree in history at $4.7 BILLION to be spent over the next 23 years. The cause of this consent decree and the cause of most consent decrees are overflow events that allow untreated waste into the nearby lakes, streams, river, or other nature areas. There are typically two types of ...


    By EnTech Engineering Company

  • Texas city treatment plant case study

    Performance History and Discussion Texas City selected in-Pipe Technology. Inc. to provide a collection system bioaugmentatlon program to control fats, oil and grease (FOG) and H2S odor in the sewer system. The program is also designed to reduce influent load to the wastewater treatment plant (WWTP), improve the quality of the effluent water, improve the operating efficiency and reduce ...

  • Los Angeles Collection System Agreement: a Win-Win Partnership & Success Story

    ABSTRACT During February 1998, the wettest February in Los Angeles’ history, sanitary sewer overflows (SSOs) occurred in a number of communities with the majority occurring in the Eagle Rock and South Los Angeles areas. In response to these SSOs, the Santa Monica Baykeeper (BayKeeper) filed a Federal lawsuit against the City asking for injunctive relief due to the SSOs. In January 2001, the ...

  • Rapid On-Site Analysis of Fats, Oil and Grease (Fog) - Case study

    FOG and SSO's It is estimated that 23-28% of Sanitary Sewer Overflows (SSOs) are due to Fats, Oils and Grease (FOG) or as much as 19 million gallons from 1998 to 2001 (State of North Carolina, 2004). Our increasingly mobile society has led to a decrease of cooking at home and a significant growth in the commercial food sector. This, on top of other industries such as metal processors, meat ...


    By Spectro Scientific

  • Management of Fats Oil and Grease - FOG

    Estimates reveal that FOG reaching the nations drains causes up to 75% of sewer blockages and related floods.  The management of this waste stream is being taken increasingly seriously by the authorities, including Environmental Health Officers, The Environment Agency and the Water Companies.   Not everyone is aware of their responsibilities with ...


    By Cleveland Biotech Ltd.

  • FOG: Power of Persuasion

    Technically sound programs and gentle persistence helped Sierra Vista pretreatment coordinator Hector Hagele get FOG under control Cleaning fat, oil, and grease blockages from sewers in Sierra Vista, Ariz., was an unending nightmare for Hector Hagele. He swore that if he ever had the chance to change how food establishments handled FOG, he would pursue it. Hagele got his wish when the city ...


    By Horizon Technology, Inc.

  • Larsen’s Creamery, Oregon City OR, USA

    The dairy manufactures butter for a wide range of private label customers. As recently as 18 months before a final solution was obtained from WWW, the dairy firm was in compliance and little noticed by the local PUD. As wastewater scrutiny increased, particularly due to Fats, Oils and Greases (FOG), a search for solutions began. The dairy hired a number of engineers and tried various “systems”. ...


    By World Water Works, Inc.

  • Missouri city wastewater treatment plant case study

    Project Summary Missouri City selected In-Pipe Technology, Inc. to provide a collection system bioaugmentation program reduce influent load, energy costs and sludge production at the wastewater treatment plant (WWTP). The program is also designed to control fats, oil and grease (FOG) accumulation and odor in the collection system. In-Pipe Treatment Strategy ...

  • Case Study - The performance of the grease degrading bioproduct greasolux in the meat manufacturing factory and municipal WWTP

    Problem A municipal waste water treatment plant in one Baltic town continuously had problems with the fat, oil and grease (FOG) accumulation in the sewer lines, lift stations and waste water treatment plant, since the start up of a local meat processing facility. The highly polluted waste water directly impacted the treatment plant in the following ways: Increased grease ...


    By Ecochemicals UAB

  • Goodbye Grease! Aqua Mundus Helps Catering & Commercial Kitchens Manage Fat, Oil & Grease Wastewater

    While fat, oil and grease can cause major blockages to piping and sewers, Aqua Mundus is helping thousands of commercial and catering kitchens implement a solid grease management infrastructure and flush away these nasty problems for good.  While pouring fat, oil and grease (FOG) down a commercial sink may seem like a good idea, their solid properties can cause dangerous build-up and even ...


    By Aqua Mundus Ltd

  • Techniques for Oil in Water Analysis

    The people responsible for conducting oil in water measurements understand that the measurement can be quite challenging. Wastewater from different sources can contain many different types of hydrocarbons, each with different chemical make-ups. On top of the lack of chemical uniformity in different oils, there has been a ...


    By Spectro Scientific

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