Cooling-water treatment
This article examines how new chemicals, application technology, and control systems enhance treatment of water for cooling and powerplant reuse, while minimizing discharges to protect the environment. Effective operation of cooling-water treatment systems continues to hinge on the control of scaling, fouling, and corrosion. Though these maladies have not changed in nature over recent years, the operating problems encountered have intensified considerably. Depletion and degradation of water sources and environmental concerns have been the driving forces for change. In some states, regulations--such as California`s Title 22--now mandate the use of reclaimed water (treated sewage) and are harbingers of future trends. While these and other influences combine to reduce freshwater consumption and wastewater discharge, they force reliance on poorer-quality, more aggressive water in powerplant cooling systems. Responses to the challenge include a continuing move from once-through to recirculating systems featuring cooling towers, higher-cycle operation of existing cooling-tower systems, and improvements in treatment chemicals, technology, and controls.
- OSTI ID:
- 69746
- Journal Information:
- Power (New York), Vol. 139, Issue 5; Other Information: PBD: May 1995
- Country of Publication:
- United States
- Language:
- English
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