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We develop multiobjective optimization models to simultaneously minimize biosolids odors as well as wastewater treatment process and biosolids distribution costs. A weighting method and constraint method were employed to find tradeoff, so called Pareto optimal, points between costs and odors. Schur s decomposition and special order set type two variables were used to approximate the product of two decision variables. A Dantzig-Wolfe decomposition technique was successfully applied to break apart and solve a large optimization model encountered in this dissertation.Using the Blue Plains…mehr

Produktbeschreibung
We develop multiobjective optimization models to
simultaneously minimize biosolids odors as well as
wastewater treatment process and biosolids
distribution costs. A weighting method and constraint
method were employed to find tradeoff, so called
Pareto optimal, points between costs and odors. Schur s decomposition and special order set type two
variables were used to approximate the product of two
decision variables. A Dantzig-Wolfe decomposition
technique was successfully applied to break apart and
solve a large optimization model encountered in this
dissertation.Using the Blue Plains advanced
wastewater treatment plant located in Washington, DC
as a case study, we find several Pareto optimal
points between costs and odors where different
treatments (e.g., lime addition) and biosolids
distribution (e.g., to what reuse fields biosolids
should be applied) strategies should be employed.
This model can be used proactively by any typical
advanced wastewater treatment plants to produce the
least malodorous biosolids at minimal costs.
Autorenporträt
Dr. Prawat Sahakij earned his Ph.D. in Project Management from
the University of Maryland at College Park in USA. Currently, he
works for the Royal Thai Army, Thailand. His current appointment
is at the Engineer School where he teaches field fortifications
and obstacles subject.