Use of Ozone for Water Treatment in Recirculating-Water Raceway Systems
- 1 January 1994
- journal article
- Published by Oxford University Press (OUP) in The Progressive Fish-Culturist
- Vol. 56 (1) , 47-50
- https://doi.org/10.1577/1548-8640(1994)056<0047:uoofwt>2.3.co;2
Abstract
Ozone was tested for its effects on culture animals and on water quality in 230-L seawater tanks and recirculating-water raceway systems for the culture of warmwater marine fish (red drum, Sciaenops ocellatus) and shrimp (Penaeus vannamei). Fish and shrimp were observed for their tolerance of residual ozone levels for 3, 6, and 24 h. Shrimp were able to tolerate residual ozone levels up to 2.5 mg/L for 3 h and 1.0 mg/L for 24 h. Fingerling fish were tolerant of residual ozone levels up to 0.1 mg/L for 24 h without damage to their gill membranes. Ozone had no noticeable effect on ammonia and nitrite levels in the raceway systems, although these variables did not fluctuate drastically as had been seen in previous work. Ozonation appeared to improve the clarity of the culture water. Final production was 11.7 kg/m3 (117 tonnes/hectare) for shrimp and 15.4 kg/m3 (154 tonnes/hectare) for fish with ozonation compared with 8.1 kg/m3 (81 tonnes/hectare) for shrimp and 12.9 kg/m3 (129 tonnes/hectare) for f...Keywords
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