Health Risk Assessment of Cadmium Pollution Emergency

Taking river network of West River and North River as the research area, one-dimensional heavy metal model was developed, and its parameters are calibrated by the measured data. According to the designed data of cadmium pollution emergency scenario, the cadmium transport and transformation process in river network were simulated by the model. The health risk assessment method was developed to assess the health hazards caused by the pollution emergency. The research revealed that the carcinogenesis risk caused by the pollution emergency in Foshan city is still acceptable in the current situation. The hazard of acute intoxication is much higher than that of chronic carcinogenesis, and the increase of pollution emergency frequency contributes to the augment of carcinogenesis risk. Therefore, water intake and water use actions from the 50 km long reach downward the accident place should be forbidden during the accident.