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Item Information   Holdings       More by this author     Keleman, Michael.     Subjects     Biochemical oxygen demand -- Measurement     Sewage -- Purification -- Activated sludge process     Food -- Economic aspects     Recycling (Waste, etc.)     MSEV Project.     Browse Catalog     by author:      Keleman, Michael.       by title:      Mass balance evaluat...         MARC Display

Mass balance evaluation of food waste carbon on the conventional activated sludge process / by Michael Keleman. by Keleman, Michael. Subjects Biochemical oxygen demand -- Measurement   Sewage -- Purification -- Activated sludge process   Food -- Economic aspects   Recycling (Waste, etc.)   MSEV Project. Description:  78 leaves : ill. ; 29 cm. Contents:  Thesis advisor: Dr. Frank Mahuta. Committee members: Stephen Arant, Jeffrey MacDonald. Introduction, literature review, and scope -- Food waste composition and characterization -- Sewage collection system decay -- BOD removal from primary clarification -- Mass balance model -- Implications of food waste BOD model -- A: Food waste recipe -- B: Total solids procedure -- C: Extrapolation of decay constants -- D: Bench sheets for BOD analysis for UBOD determination -- E: Mathematical derivation of UBOD and decay constants -- F: Denitrification and methanol requirements -- G: Methanol equivalent for food waste. The objective of this capstone project report is to quantify the potential amount of food waste carbon in the form of Biochemical Oxygen Demand (BOD) that reaches the secondary aeration operations of a conventional activated sludge treatment plant through expanded use of residential food waste disposers. Using known information on food waste composition and particle sizes typical after grinding, this research will quantify probably degradation in the sewer based upon aerobic conditions, and include primary clarifier removal efficiency of food waste to model a potential range of the total of BOD reaching secondary aeration tanks at wastewater treatment plants. Decay rate and ultimate BOD were determined using traditional testing methods in conjunction with an existing mathematical tool. Because communities are increasingly looking for options to divert organics from landfills, and wastewater treatment plants are moving toward resource recovery, and given the widespread aceptance and use of food waste disposers, this research will provide stakeholders the information necessary to understand the total potential impacts of residential disposers by quantifying the actual organic contribution of food waste to the conventional activated sludge process. Current information only quantifies the amount entering sewers without accounting for potential degradation in sewers and primary clarification, and therefore exaggerates the implications for additional energy demand. Since holistic management considers the overall costs and benefits to each sector impacted, a mass balance evaluation will give stakeholders a more comprehensive understanding of the issues of managing food waste using disposers and wastewater treatment.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .K44 2012 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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