The Occurrence and Control of Disinfection By-Products (DBPs) in Two Water Treatment Plants Utilizing the Same Source

2004·5.2 MB·English

by  Khoury, Sam George

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http://archive.org/details/occurrencecontroOOkhou

ColumbusStateUniversity
TheCollegeofScience
TheGraduatePrograminEnvironmentalScience
TheOccurrenceAndControlOfDisinfectionBy-Products(DBPs)inTwo
WaterTreatmentPlantsUtilizingTheSameSource
AThesisin
EnvironmentalScience
By
SamGeorgeKhoury
SubmittedinPartialFullfillment
OftheRequirements
FortheDegreeof
MasterofScience
July2004
2004bySamGeorgeKhoury
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MasterofScience.
Date Sam(jeorge/fthoury
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Date ZewduGebeyehu,Associate
Professor,Departmentof
ChemistryandGeology
ThesisAdvisor
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Date /famesA.Gore,ProfessorandChair,
DepartmentofEnvironmental
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Floydftf.Jackson\Associate
Professor,Departmentof
ChemistryandGeology

ABSTRACT
TheOccurrenceAndControlOfDisinfectionBy-Products(DBPs)inTwoWater
TreatmentPlantsUtilizingTheSameSource
By
SamG.Khoury
Theinfluenceofdisinfectionby-products(DBPs)ontheoperationanddesignof
water treatment plants has been increasing since the early studies by Rook on
trihalomethanes(THMs)(Stevens, 1977). Workconductedinthe 1980sidentifiedthe
existence of nonvolatile halogenated organics (non-THM organics), of which the
majority produced by chlorination were haloacetic acids (HAAs), within the HAAs,
dichloroacetic acid (DCAA) and trichloroacetic acid (TCAA) were the dominant
members.
Concern over potential health effect led the U.S. Environmental Protection
Agency (USEPA) to set a maximum contaminant level (MCL) for total THMs and
HAAs. Thedisinfectant/disinfectionby-productrule(D-DBPRule)currentlyproposed
by the USEPA will lower the MCL for THMs and HAAs. Past and pending DBP
regulations have providedamomentumto seek abetter understanding ofhowthese
compoundsareformedaswellashowtheirproductioncanbecontrolled.
Drinkingwaterutilitiesarepreparingforthesemajorchanges. Aninvestigation
wasconductedtoexaminedisinfectionoptionsthatwouldensureminimizationofDBP