Water Pollution Simulation and Health Risk Assessment Through a Refined Contaminant Transport Model

摘要: To address the growing concerns on water pollution caused by pesticide losses, this study aimed at refining a contaminant transport model and applying it to health risk assessment for pesticide-contaminated water. It was an advance of previous modeling works integrating dynamic two-big-leaf multilayer emission module with existing runoff loss simulation (PeLM). A approach further employed evaluate effects based refined model. The performance feasibility were examined through case conducted in Auglaize-Blanchard Watershed, OH, USA. widely used herbicide, atrazine, targeted. Both original PeLM tested compared. results indicated that had advantages accounting more processes improving accuracy. disclosed atrazine concentrations river usually lower than American standards. explore potential problems associated risks, stringent standard (i.e., Canadian guideline) also employed. daily average sometimes markedly surpassed guideline, particularly during wet season (May August). Correspondingly, maximum values chronic acute hazard indices could exceed over 1.3 times recommended thresholds. developed methodologies findings would help raise provide support decision making related mitigation quality management.