Modeling of wastewater and sludge management systems

Abstract The Optimal Sludge Management Program (OSMP) is a computer program used to optimize the design and to simulate the steady-state operation of wastewater and sludge management systems. In its development, fundamental and rational process models were used, resorting to empiricism only when no rational models were available. Wastewater and sludge treatment processes were linked so that the impacts of recycle streams on processes were incorporated. For the optimization procedure, a sequential unconstrained minimization technique was used in which an interior penalty function was minimized by the Davidon-Fletcher-Powell method. Optimization and simulation examples showing the use of OSMP are included in the paper.