Evaluation of Biodegradation Kinetics Models for Microconstituents Under Typical Sewage Treatment Conditions

摘要

Mathematical models developed for design and operation of biological wastewater treatmentsuch as those from the International Water Association (IWA) were not concerned with specificchemical compounds. Consequently commercial modeling software for microconstituents (MCs)removal have been developed, but models used in these packages have not incorporateddevelopments in IWA models which present numerous possibilities that have not been evaluated.This paper discusses many theoretical models that could be applicable considering coupling withactivated sludge (AS) models developed by the IWA. The literature was reviewed for the kineticmodels that can be used to describe transformation of MCs (volatilization and photodegradationwere considered negligible) in an AS process. It is recommended that sorption models shoulddepend on total concentration of solids in AS and biodegradation studies should incorporateactive mass and not mixed liquor suspended solids concentration (MLSS) in their kineticformulations.