Title: Wastewater quality behaviour in separate sewer systems during storm events
Abstract:The modelling of wastewater quality behaviour in sewerage systems is attracting more attention due to the tightening of environmental constraints, implemented to protect natural water bodies from effl...The modelling of wastewater quality behaviour in sewerage systems is attracting more attention due to the tightening of environmental constraints, implemented to protect natural water bodies from effluent discharge. Although the hydraulic modelling of wastewater conveyance systems is well advanced, the use of computer models to predict the concentration of wastewater quality parameters is comparatively in its infancy. The mechanisms of wastewater quality generation from urban areas and the transformation of wastewater quality parameters within the sewer system under dry and wet weather conditions are discussed. The paper describes the HydroWorks quality model, built using suspended solids (SS) and biochemical oxygen demand (BOD5) loads as inputs calculated from domestic, commercial and trade waste areas in an urban catchment of Melbourne metropolitan area. The calibrated model suggests suitable pollutant load factors for different land use types. The results obtained from the calibrated dry weather wastewater quality model and the wet weather hydraulic model could be used to estimate the effect of pollution loads in the sewer system by adopting default wet weather quality parameters. These results can be used to study the different pollution generation assumptions in separate sewer systems during storm events and also provide some thoughts towards accurate wet weather wastewater quality modelling with good quality data.Read More
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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