ObjectiveTo investigate the changes of the quality of drinking water before and after advanced treatment of source water in a water plant, so as to provide the scientific evidence for management of the quality of drinking water.
MethodsThe tap water and the same as drinking water were monitored and studied before and after advanced treatment.
ResultsThe comprehensive qualified rate of source water before and after advanced treatment were 81.7% and 80.0% respectively, with no significant difference.The comprehensive qualified rates of the factory water and the end water before and after advanced treatment were 50.6% and 99.4%, respectively, with significant differences between the two conditions.The qualified rates of individual water quality indicators of the tap water and the end water before and after the advanced treatment were as follows:the oxygen consumption was 58.3%, 100%, the turbidity 92.2%, 100%, the manganese 90.0%, 100%, the total bacterial counts were 96.7% and 99.4% respectively, the difference was statistically significant(P < 0.05);the total coliform groups were 98.3%, 100%, the difference being without statistical significance.
ConclusionThe water quality of the area has been greatly improved after advanced treatment; greater emphasis should be given to the index of microorganism and the hygiene of drinking water is further monitored.
DownLoad: