AWWA WQTC65714

Quantitative Microbiological Risk Analysis (QMRA) is a widely used method for predictingand assessing the risk of infection associated with microbial pathogens present in water. Itssystematic application provides a scientific basis to assist risk management decision-making,allows ranking of intervention priorities and making sure that the system produces anddelivers drinking water that meets health targets. The latest international guidelines ondrinking water quality promote a preventive, integrated (from source to tap) framework forassessing and managing the safety of drinking water.The principal objective of this study was to develop a Monte Carlo model, based on the QMRAapproach, in order to assess the relative risk of infection associated with the presence ofCryptosporidium and Giardia in drinking water. Specifically, this model analyzes the use of supervisory control and data acquisition (SCADA) data to integrate the reality of full-scale operations. Themodel developed allows: the assessment of the impact of the input models on the estimatesof risk (parasite occurrence, treatment performance); the comparison of different treatmentscenarios based on microbial risk reduction; and, the assessment of the impact of the ozonationand ultraviolet (UV) disinfection shutdown periods on the estimated risk. Includes 38 references, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

15

File Size:

1 file , 350 KB