Wastewater minimization under uncertain operational conditions

Sensitivity analyses reveal that introducing uncertainty in operating conditions results in considerable changes in the connectivity of the units involved in wastewater reuse. The proposed stochastic optimization model produces a flexible wastewater network which is capable of accommodating uncertainties in operating temperature. In the presence of uncertainties, the optimal network minimizes the impact on the reuse connectivity (topology) by providing 32.2 t/h of freshwater in addition to the condensing steam. The stochastic approach adopted in this research has been found to be effective in handling uncertainties and has resulted in flexible and resilient wastewater networks with low expected value of perfect information (EVPI).