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involves removing additional sedimentation control vanes and cutting holes in the pump wells on the operating units
especially with partially built structures
and Potomac Electric Power Co
The precise and continuous monitoring of chlorine residual at low levels is essential to the efficient operation of cooling towers
the chemistry of the cooling water does not support the growth of Legionella pneumophila
87-15: The Growth and Control of Nitrifying Bacteria in a Urea Plant Cooling Drift involves removing additional sedimentation controlA urea plant cooling water system experienced problems with the growth of nitrifying bacteria which produced nitric acid from ammonia resulting in a sharp drop in the pH of the cooling water was found to drop from 7. 5 to 6. 1 over a period of 34 days. It was demonstrated in the laboratory that bacteria possessing the enzyme urease were present in the cooling water. A number of biocides were screened for their ability to inhibit growth of ammonia
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