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78-12: Chromate Handling Systems for Cooling Tower BlowdownChromate based inhibitors have been widely used in cooling systems for corrosion control for many years. However, recent environmental legislation has increased restrictions on industrial chromate discharge. 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 development of accurate and representative cooling tower performance penalties is critical to the optimization of cooling systems design and the assessment of associated performance penalties

Water is vital to industry in processing raw materials

Parameters evaluated were scaling

corrosion coupons

If the enhanced cooling tower is operated as an evaporative chiller that can completely displace refrigeration equipment

This paper describes how the application of a newly developed high cycle cooling water treatment program directly resulted in a substantial savings in water use and overall cooling water treatment costs while maintaining scale and corrosion control

improved corrosion control

patent-pending

The purpose of this paper is to show why altitude is an important factor that should be taken into consideration when designing or testing a tower

Includes recommendations for water and lumber treatment

The alternative approach reduced treatment costs by 30%

some towers suffered from important fouling issues and we had to clean

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