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Item Information   Holdings       More by this author     Gagne, Alicia A.     Subjects     Water -- Purification -- Radium removal     Drinking water -- Standards     Water -- Purification -- Ion exchange process     MSEV Project.     Browse Catalog     by author:      Gagne, Alicia A.       by title:      Analysis of alternat...         MARC Display

Analysis of alternatives for treating radium-contaminated drinking water supplies / prepared by Alicia A. Gagne. by Gagne, Alicia A. Subjects Water -- Purification -- Radium removal   Drinking water -- Standards   Water -- Purification -- Ion exchange process   MSEV Project. Description:  77 leaves : ill., charts ; 28 cm. Contents:  Introduction -- Literature review -- Water characterization -- Alternatives analysis -- Conceptual design and life cycle cost analysis of selected alternatives -- Conclusions and recommendations -- References -- Appendix A) Resin manufacturers specifications B) Marshall and Swift equipment cost index C) Cost curves used for cost analysis. The southeastern region for the State of Wisconsin contains high levels of Radium-226 and Radium-228 in drinking water supplies. The concentrations exceed the USEPA MCL of 5 pCi/L for combined radium-226 and radium-228. The focus of this project was to evaluate various treatment technologies for known data from a municipality located in Southeastern Wisconsin. An alternatives analysis was conducted for various technologies to determine the best treatment technology for the alternatives analysis, conceptual design and cost analysis associated with the treatment prevention system. The alternatives analysis was conducted by using technical papers that performed bench, pilot, or full-scale studies on each alternative. A screening criteria was applied to determine the best treatment technology for the system. The well pumps at a maximum flowrate of 3.6 MGD with a hardness of 250 ppm and a combined radium concentration of 10 pCi/L. After careful consideration of all alternatives, a cation exchange unit was selected for the proposed treatment technology. Assuming a 95% radium removal efficiency, the concentration of radium in the treated water can then be used for blending of the other City wells to bring the levels of radium below the NIPDWR limit. No bench-scale studies were performed to optimize the system. The system will consist of 5 columns treating 3.6 MGD of radium-contaminated water. Secondary wastes produced include wastewater containing a radium concentration level of 638 pCi/L and the resin media itself containing 1,159 pCi/g after five years. The total cost of this system over a 25 year equipment life and a 7% interest rate is $93 million. To break down the $93 million between total capital and O&M costs is $22 million and $71 million, respectively.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .G10 1999 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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