Date of Award

Fall 2010

Project Type

Thesis

Program or Major

Environmental Engineering

Degree Name

Master of Science

First Advisor

James P Malley, Jr

Abstract

Research was performed to show the impact of several types of pretreatment at Water Treatment Plant, Andijk, on the Advanced Oxidation Process. The objective was to compare the effect of Ion Exchange with Ultra Filtration (IX-UF) pretreatment to the existing Coagulation, Sedimentation, Filtration (CSF) pretreatment on the effectiveness of the UV/H2O2 process. The micro-pollutants chosen for this study are NDMA, atrazine, 1,4-dioxane and bromacil.

Characterization of the water matrixes for the pretreated waters was completed to determine the impact of background absorption (DOC and nitrate) on micro pollutant degradation and OH· radical production. Collimated beam studies (MP UV) were performed to determine rate constants (kd ,D), quantum yields (phi), and ROH,UV. Simplified modeling showed that phi and kd, for NDMA were in the same order of magnitude for all water types. For 1,4-dioxane the ROH, UV values were strongly impacted by the water matrix. Pilot studies were completed to determine the efficiency of the two pretreatment techniques in terms of electrical energy consumption (EEO). Results showed EEO is strongly impacted by pretreatment. A reduction of 50% in EEO can be achieved by IX-UF in comparison with CSF.

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