Date of Award
5-1993
Document Type
Graduate Project
Degree Name
Master of Engineering (ME)
Abstract
This report summarizes the design of an ozone disinfection system to remove fish pathogens from Lake Sakakawea for the Garrison Diversion Project. Three different flow rates, 50 MGD, 100 MGD, and 500 MGD were considered for the design. To design the system, laboratory tests were performed on filtered and unfiltered (raw) water obtained from Lake Sakakawea at the Snake Creek pumping station in Garrison North Dakota. Laboratory tests indicated a 99. 99 percent bacteria removal occurred with an ozone residual of 0.2 mg/Land a 5 minute contact time. It was also found that the water had an approximate ozone demand of 2.0 mg/L.
Based on the results of the laboratory tests, an ozone demand of 2.0 mg/u an ozone residual of 0.2 mg/u and a contact time of 8 minutes were selected for the process design. The components for the disinfection system include an air preparation system, air compressors, ozone generators, an ozone contact basin, and an ozone destruction unit. This report also presents an approximate construction cost, and operation and maintenance costs for the proposed system at each flow rate.
Recommended Citation
Cruise, Tia, "Use of ozone to remove pathogens from garrison diversion water" (1993). Theses and Dissertations. 6609.
https://commons.und.edu/theses/6609
