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Residuals Management Abstract

George Budd, PhD
Water treatment sequences can be broken into groupings of profiles that must be managed to achieve the desired results. This presentation will discuss the profile based approach to optimization along with some case studies to illustrate how the profiles can be adjusted to reduce overall cost. The case studies include optimization to reduce coagulant dose and reliance on pH adjustment chemicals; changing the coagulant chemical to reduce costs of compliance with future disinfection byproduct regulations; use of in-lake aeration to modify raw water characteristics; the effects of different flocculation/sedimentation configurations and improved flocculation pattern for effective turbidity reduction; physical improvements in combination with coagulant adjustments to increase the plant capacity; and the effect of pH on filtered water turbidity. Each solution is based on an understanding of the processes and making decisions regarding treatment profiles within a treatment plant.


Mark LeChevallier, PhD

Outside of personnel costs, energy and chemicals are typically a water utility's largest operating costs. This presentation will focus on three areas of optimization:  energy management, pressure management, and

corrosion control to show how research can help utilities make good management decisions to reduce operating costs. Moreover, this improved operations and cost savings also result in environmental and public health benefits. When utility managers promote a culture of continuous improvement, the triple-bottom line results will promote increased efficiency and optimization.