Objective To investigate and analyze the cause of an incident of drinking water odor in a city, to identify the pollutants, and to ensure drinking water safety and customer health by identifying and removing the pollutant.
Methods A field investigation was conducted in a water plant after the drinking water odor incident reported. The samples of source water, finished water and peripheral water were monitored and evaluated.
Results The volatile phenol index of source water did not meet the class III water quality standard prescribed in Environmental Quality Standards for Surface Water (GB 3838—2002). The concentrations of volatile phenols tested in finished water and peripheral water samples varied between 0.002 mg/L and 0.132 mg/L, and other indicators such as smell and taste did not conform to the requirements of Standards for Drinking Water Quality (GB 5749—2006).
Conclusion Phenol pollution of source water is the main cause of the investigated odor incident in drinking water.
DownLoad: