Bibliographic Citation
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| Title | Power evaluation of the Los Angeles oxygen-fed ozone system. [LOS ANGELES] |
| Creator/Author | Rakness, K.L. (Process Applications, Inc., Ft. Collins, CO (USA)) ; Stolarik, G.F. (Los Angeles Dept. of Water and Power, CA (USA)) |
| OSTI Identifier | OSTI ID: 5520967 |
| Other Number(s) | Journal ID: ISSN 0191-9512; CODEN: OZSED |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Ozone: Science and Engineering (The Journal of the International Ozone Association); (United States); Journal Volume: 12:4 |
| Subject | 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; OZONIZATION; WATER TREATMENT; DISINFECTANTS; ECONOMICS; FLOCCULATION; LOS ANGELES; OZONE; CALIFORNIA; CHEMICAL REACTIONS; DEVELOPED COUNTRIES; FEDERAL REGION IX; GERMICIDES; NORTH AMERICA; PRECIPITATION; SEPARATION PROCESSES; USA |
| Description/Abstract | The Los Angeles Department of Water and Power (LADWP) operates a 600 mgd (2,270 ML/day) direct filtration water treatment plant which includes a 7,900 lb/day (149 kg/hr) ozonation system. Ozone is applied as a preoxidant for the purposes of disinfection and microflocculation. The ozonation system is unique in that high purity oxygen is generated on-site and is used as the feed-gas in a once-through system. The process was selected through competitive bids and evaluated for total present worth from 20-year life cycle costs which included capital plus energy expenses. Power consumption (and penalty) was valued at $6,500/kW. System power demand was measured at nine ozone production rates. A minimum specific energy of 6.5 kWh/lb (14.3 kWh/kg) of ozone was observed when generating ozone at a concentration between 5 and 6% (wt) (65 and 80 g/m{sup 3}; where the standard temperature and pressure are 70{center dot}F (21.11 C) and 1 atm, respectively). The test methodolgy and data assessment considerations were developed jointly by the owner and manufacturer, and produced results with practical significance beyond the performance testing objective. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 355-376 |
| System Entry Date | 2009 Dec 16 |
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