93-05: Chemical Approaches to Zero Blowdown Operation Repair and Construction

93-05: Chemical Approaches to Zero Blowdown Operation Repair and ConstructionComplying with increasingly stringent water discharge limitations has forced a re examination of current cooling water treatment practices. Plants faced with severe effluent restrictions have looked to high cycle or zero blowdown is discussed in light of current phosphonate polymer technology and a newly developed non phosphorus scale control additive. Experiences with treatment programs operating with (pH 7. 5 8. 0) and without (pH 8. 8 9. 2) pH

Our studies demonstrate a need to revisit current biocide dosing practices in order to meet the new guidelines for Legionella control in industrial water systems

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where calcium and carbonate were maintained as soluble species in solution

extra cellular polymers

Cooling Tower customers request other shades for their applications such as beige (tan) or light gray

This paper describes recent experiences with newer all-organic alkaline treatment programs

Interest in pipeline acoustic flowmeters has been increasing recently due to the combined effects of increased energy costs

In general

test measurements and data reduction procedure required for determination of the thermal capability of a dry

sacrificial corrosion methods

a compendium of new environmental regulations

over almost a year of additive usage in a major cooling tower of the Shell