A 50,000,000 gallon per year corn-based ethanol plant relies heavily on a large cooling tower system. The cooling tower uses well water for the tower make up, which contains high levels of iron. These high levels are concentrated in the cooling tower, resulting in fouling of the fermentation heat exchangers and tower. In addition, the tower is located in an area of high dust and in the summer months this area can be very hot. These both led

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