17-12: Current Microbiological Control Techniques in Cooling Tower Water System Non Oxidizing Biocides

17-12: Current Microbiological Control Techniques in Cooling Tower Water System Non Oxidizing BiocidesDue to the recent out breaks of Legionnaires Disease such as in New York City it was decided to investigate how and why this could have occurred by cooling tower water systems that were chemically treated. Cooling tower water systems are normally treated by the traditional method of applying microbiocides and often monitored with traditional total bacteria monitoring methods. This has prompted a detailed review of the traditional microbiological

Not too many years ago when air conditioning installations were pretty well confined to funeral parlors and barber shops and people were wondering if it really paid to air condition an office

Based on the test information on the current condition and the original design stresses

The basic characteristics of the new solid tablet will be discussed based off of laboratory and field trials

heat exchanger heads

burning properties

although in many cases the deterioration is limited to the pipe joints

the cooling tower operators did not like the safety concerns with non oxidizing biocides

Maximum fan performance usually means maximum airflow for minimum horsepower

Hexavalent chromate can be removed from cooling tower blowdown by either reducing it chemically or electro­chemical1y1 •2 to the trivalent form or by ion exchange and reuse in the system

The benefits of proper control are measurable and translate to improved system efficiency and reliability

bending vs

the second test was applied on eliminators with a layer of about 1