Record Display for the EPA National Library Catalog

RECORD NUMBER: 205 OF 882

OLS Field Name OLS Field Data
Main Title Corrosion and Calcium Carbonate Saturation Index in Water Distribution Systems.
Author Singley, J. E. ; Pisigan, R. A. ; Ahmadi, A. ; Pisigan, P. O. ; Lee, T. Y. ;
CORP Author Florida Univ., Gainesville.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1985
Report Number EPA-R-805400; EPA/600/2-85/079;
Stock Number PB85-228112
Additional Subjects Corrosion ; Water distribution ; Distribution systems ; Calcium carbonates ; pH ; Mathematical models ; X ray diffraction ; Dissolved gases ; Oxygen ; Chlorides ; Galvanized materials ; Steels ; Monitoring ; Water quality ; Ions ; Metals ; Tables(Data) ; Graphs(Charts) ;
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB85-228112 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 270p
Abstract
Corrosion in water distribution systems was studied to gain a better understanding of the processes and to develop control strategies. Equations and calculation methods for determining the pH(sub s) were developed using a chemical model with and without ionic speciation. Several calculation procedures for determining pH (sub s) were analyzed and compared. Laboratory experiments using weight loss and electronic techniques for measuring corrosion rates were conducted in laboratory batch and continuously circulating systems using waters with different water quality parameters. Changes in water quality were monitored in experiments with mild steel, galvanized steel and copper coupons. Corrosion products obtained from coupons exposed to continuously circulated solution were analyzed by wet chemical techniques and x-ray diffraction. Results indicate Saturation Index cannot be used alone to indicate the extent of corrosion or to measure the corrosivity of a water.