Optimization of chemical dosing in water treatment for enhanced coagulation/softening as it pertains to DBP removal

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Optimization of chemical dosing in water treatment for enhanced coagulation/softening as it pertains to DBP removal

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/9262

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dc.contributor.advisor Inniss, Enos C. (Enos Charles) en_US
dc.contributor.author Kenny, Colleen M., 1986- en_US
dc.date.accessioned 2010-12-08T17:47:53Z
dc.date.available 2010-12-08T17:47:53Z
dc.date.issued 2010 en_US
dc.date.submitted 2010 Summer en_US
dc.identifier.other KennyC-071610-T55 en_US
dc.identifier.uri http://hdl.handle.net/10355/9262
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on August 13, 2010). en_US
dc.description The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. en_US
dc.description Thesis advisor: Dr. Enos C. Inniss. en_US
dc.description Includes bibliographical references. en_US
dc.description M.S. University of Missouri--Columbia 2010. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Civil engineering. en_US
dc.description.abstract Treatment facilities out of compliance with EPA regulations are often not using optimal chemical treatment. Determination of the most effective chemical type, combination and concentration can aid in reduction of disinfection by-product precursors. The effects of optimal chemical treatment using enhanced coagulation and enhanced softening was tested on three surface waters (two reservoirs and one lake sources), and one ground water (alluvial wells). Results indicated enhanced coagulation was more effective at removing DBP precursors from waters with higher initial UV-254 absorbance values and lower alkalinities while enhanced softening was more effective for waters with lower initial UV-254 absorbance values and higher alkalinities. In a number of cases, ferric salts outperformed aluminum salts at reducing the DBP formation potential. Redox potential measurements were added to the list of analyses to determine trends and the feasibility of using this parameter as an additional indicator of process efficiency. It is expected that Eh will trend as the inverse of pH. However, this research presents that under constant pH conditions, the Eh readings seem to indicate the destabilization and stabilization processes expected during the coagulation step in drinking water treatment. Comparison of the Eh readings from the start of various treatment stages to the end provides some indication of the effectiveness the enhanced coagulation or enhanced softening process has on the removal of organic precursors for disinfection by-products. en_US
dc.format.extent xii, 139 pages en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.relation.ispartof 2010 Freely available theses (MU) en_US
dc.subject.lcsh Water -- Purification -- Coagulation en_US
dc.subject.lcsh Water -- Purification -- Disinfection -- By-products en_US
dc.subject.lcsh Water quality en_US
dc.title Optimization of chemical dosing in water treatment for enhanced coagulation/softening as it pertains to DBP removal en_US
dc.type Thesis en_US
thesis.degree.discipline Civil engineering en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name M.S. en_US
thesis.degree.level Masters en_US
dc.identifier.merlin b80705339
dc.identifier.oclc 681953799 en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2010 Theses


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