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08373 The Impact of Reclaimed Water of Two Different Qualities on Two Similar Power Plants

Picture for 08373 The Impact of Reclaimed Water of Two Different Qualities on Two Similar Power Plants
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Product Number: 51300-08373-SG
ISBN: 08373 2008 CP
Author: Daniel J. Robinette
Publication Date: 2008
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During the second quarter of 2004, following several years of drought in Colorado, two vintage coal-fired power plants began using reclaimed water in their main condenser cooling systems instead of fresh water and drinking water. The first power plant had a smooth transition from fresh water to reclaimed water, uses only sulfuric acid and sodium hypochlorite for cooling water treatment and is very satisfied with the results. However, this has not been the case with the second power plant. The transition from drinking water to reclaimed water resulted in biofouling and iron deposition issues and the plant reverted to drinking water until the problems could be solved. This led to a multi-phase test run of the tertiary treatment plant, as well as changes in cooling water treatment at the power plant to overcome these serious issues. This paper will explore why these two reclaimed water case histories have had such different experiences even though the power plants and reclaimed water production facilities are very much alike.
During the second quarter of 2004, following several years of drought in Colorado, two vintage coal-fired power plants began using reclaimed water in their main condenser cooling systems instead of fresh water and drinking water. The first power plant had a smooth transition from fresh water to reclaimed water, uses only sulfuric acid and sodium hypochlorite for cooling water treatment and is very satisfied with the results. However, this has not been the case with the second power plant. The transition from drinking water to reclaimed water resulted in biofouling and iron deposition issues and the plant reverted to drinking water until the problems could be solved. This led to a multi-phase test run of the tertiary treatment plant, as well as changes in cooling water treatment at the power plant to overcome these serious issues. This paper will explore why these two reclaimed water case histories have had such different experiences even though the power plants and reclaimed water production facilities are very much alike.
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