Abstract
Abstract This article presents a simple yet effective search algorithmic method for solving regional water quality management problems. Essentially, the algorithm assigns the amount of wastewater flow to be treated at each treatment plant together with the associated level of treatment. When necessary this set of assigned values is adjusted appropriately (by raising the treatment efficiency of. and/or reduction of wastewater quantity to be treated by the treatment plant concerned), so that all the physical and water quality constraints are satisfied. Optimization is achieved by the use of a Random Polyhedron Search (RPS) algorithm which identifies progressively superior solutions. The paper comprises two parts: the first, in which feasibility is confined to treatment plant/transfer capacities, and the second, in which constraints relating to the in-stream quality of the receiving water are incorporated.
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