Simulating behavior of petroleum compounds during refinery effluent treatment using the SimpleTreat model

Distribution and elimination of petroleum products can be predicted in aerobic wastewater treatment plants (WWTPs) using models such as multimedia fate model SimpleTreat. An advantage the SimpleTreat is that it only requires a few basic properties chemical to calculate partitioning, biodegradation ultimately emissions air, surface water produced sludge. The structure reflects WWTP scheme. However, refinery WWTPs typically incorporate more advanced processes dissolved air flotation (DAF), process clarifies wastewaters by removal suspended matter oil or solids. objective this work was develop includes DAF treatment. To understand how including affects concentrations constituents effluent, we replaced primary sedimentation module with simulating DAF. Subsequently, compared results from WWTP-DAF obtained original for library over 1500 representative hydrocarbon constituents. increased air-water exchange unit resulted higher volatile Predicted on average 17% larger than sedimentation. We modelled measured data literature, which supported refinement continues improve technical basis assessment products.