Reducing Coagulant Usage and Elimination of Caustic Soda in Wastewater Treatment, Saving Time and Money The Problem: A Northwest Box Manufacture was having safety issues and concerns about the use of caustic to adjust their pH after chemical treatment of their wastewater. The need existed due to the presence of copper in their wastewater. Copper optimally precipitates out of water at a pH of 8, and is thus the target pH. The current chemical treatment program required an amount that reduced each wastewater batch to a pH of 4. It was then necessary to use caustic to raise the pH back to 8 to precipitate the copper out of the waster. Our Solution: Cesco completed bench scale testing and created a coagulant product that did not require addition to pH 4 for coagulation, thus eliminating th

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