CTI Bibliography of Technical Papers - Microbiological Activity in Cooling Systems

Revised 1994

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Microbiological Activity in Cooling Systems
Order NumberTitleAuthorDate
The Effect of Process Leak Contaminants on Biocidal Efficacy Lawrence A. Grab, John A. Diemer & M.G. Freid, Union Carbide Chemicals and Plastics Co., Inc. 1994
Abstract: The effect of various process leak contaminants on the performance of eight water treatment biocides was evaluated. The contaminants included a high temperature oil, diesel fuel, a hydraulic fluid, ammonia, ethylene glycol, sulfide and the following gases: carbon dioxide, hydrogen, l-butane, and propane. The efficacy of each biocide was compared in the presence and absence of the contaminants. While the extent of deactivation varied with each biocide, all were affected by at least one of the contaminants.
Relationship of Biofilm Formation on Stainless Steel in Untreated Once Through Cooling Water to Seasonal Water Quality Trends (TP-91-05) Rodney M. Donlan, Raymon A. Muia & Alan L. Smith, Calgon Corporation 1991
Abstract: A study was initiated in a 23,000 gpm once-through cooling water system for a 1200-megawatt nuclear plant that historically has experienced fouling with biofilms containing filamentous iron bacterial. The objective was to determine whether water quality variables correlate with biofilm formation. Stainless steel sampling stubs were exposed in this water system and biofilm developing on these stubs was quantified using cell counts, TOC, and total solids. Temperature, D.O., TOC, iron, manganese, and cell count were measured regularly on the water supplied to the sampling stubs. Correlations between biofilm formation and measured water quality parameters were determined.
Filamentous Iron Bacteria Diagnosis and Treatment in Water Systems (TP-88-16) Bruce E. Chamberlain, Drew Industrial Division Ashland Chemical Company 1988
Abstract: Paper reviews literature on control of filamentous iron bacteria (FIB) and compares some actual field experiences. FIB occur rarely, are often misdiagnosed, and usually have a catastrophic effect, plugging lines and equipment. Prior findings have supported residential chlorination as an effective control. Actual case histories in this paper support this approach. Additional information is presented showing that heterotrophic population counts should not be used for evaluation or control of FIB. Microscopic examination of deposits is the surest means of affirming an FIB diagnosis.
Microbiological Control of Cooling Waters (TP-197A) D. Anthony Carter & Patricia A. McGraw, Dearborn Chemical, Chemed Corporation 1979

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