92-13: Biocide Efficacy vs. Acid Producing and Iron Oxidizing BacteriaProcedures have been developed for the successful evaluation of four water treatment biocides versus the acid producing bacteria Thiobacillus novellas and the iron oxidizing bacteria Leptotrhix discophoro, Hyphomicrobium indicium and Sphaerotilis natans. The evaluations were conducted at pH 7. 0 and ambient temperature. Each biocide was tested at concentrations that represent recommended treatment dosages for industrial water systems. The Biocidal

Gulf Coast air conditioning cold water temperature design of g5op

not associated with process evaporation

water conserving

A discussion of applications of high efficiency filtration on cooling towerwater

Oxidizing biocides have limited effectiveness in high pH environments while non-oxidizing biocides are expensive and hazardous

as well as indirect measurement of biofilm development which serves as measures of fouling (frictional resistance and heat transfer resistance)

emissions of chemical substances and heat into surface water

This paper presents quantified tradeoffs among wet

The need for increased water conservation

An ion exchange based technology has been developed to selectively remove calcium from aqueous streams effectively eliminating calcium as the limiting constituent for COC

The role of microbiology in determining the source of infection will be discussed along with examples of cases and their outcomes from hotels and healthcare facilities

The PCCP lines at Hope Creek are the backbone of the circulating water system