suspended sediment resulted from distributed soil erosions facilitates nutrient transportation and influences soil depletion. phosphorus (p) is one of the major limiting nutrients controlling eutrophication of surface water. irregular p load pulsed by heavy rainfall may damage the ecological quality of downstream waters. p transport study during rainfall events is important in both predicting a...

Two innovative tracer methods for the quantification of parasitic discharge in sewers have been proposed as routine applications within the scope of the European research project APUSS (Assessing Infiltration and Exfiltration on the Performance of Urban Sewer Systems). In order to improve the accuracy of wastewater hydrograph separation compared to conventional practice, the novel approaches ar...

When looking at acute receiving water impacts due to combined sewer overflows the characteristics of the background diurnal sewage flux variation may influence the peak loads from combined sewer overflows (CSO) and wastewater treatment plant (WWTP) effluent significantly. In this paper, effects on the dynamic compounds transported in the sewer, on CSO discharges and WWTP loading are evaluated b...

ABSTRACT This work presented the development and testing of a large-scale rainfall simulator (LSRS) to be used as research tool on rainfall-runoff associated transport processes in urban areas. The consists pressurized water supply system which supplies set 16 full-cone nozzles. Artificial with different intensities can produced over an area 100 m2 V shape. assembly is housed tailor-made acryli...

To date it is unknown how pumps in sewer systems influence micropollutant loads at the scale of minutes to hours. This is important to design sampling campaigns: i) collecting representative composite samples, ii) experimentally determining peak loads or iii) dynamically evaluating wastewater treatment plant performance. Hydrodynamic models which could simulate pollutographs become available fo...

Best Management Practices (BMPs) are increasingly used to restore river water quality but design guidance is limited. An alternative approach to remediating diffuse pollution loads is to identify the most polluting high flows from pollutographs and hydrographs and spill these flows into riparian treatment wetlands for treatment before drainage back into the watercourse. The approach is demonstr...

Urban stormwater with large impervious (paved) areas often produces runoff with a variety of contaminants. Although southern California is among the most urbanized coastal areas in the United States, the effect of rainfall variations on washoff efficiency of contaminants from pervious and impervious surfaces is largely unknown. The goal of this study was to investigate the effect of varying rai...

• Bayesian hierarchical model for runoff pollutograph is proposed The combines catchment and event specific characteristics Rain intensity, duration, antecedent dry period can explain pollutant variability Effective impervious area of the create high in pollutographs Stormwater pollution has become a key environmental issue urban areas. Reliable estimation stormwater discharge important impleme...

Event-based runoff–pollutant relationships have been the key for water quality management, but the scarcity of measured data results in poor model performance, especially for multiple rainfall events. In this study, a new framework was proposed for event-based non-point source (NPS) prediction and evaluation. The artificial neural network (ANN) was used to extend the runoff–pollutant relationsh...

Inorganic chemicals in urban stormwater and snowmelt runoff originate from catchment geology and anthropogenic activities. The occurrence, partitioning and mobility of six minerals and six trace metal (TM) indicators of anthropogenic activities were studied in stormwater, snowmelt and baseflow in four urban catchments, and the sampling of inorganics was supplemented by measurements of electrica...