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Development of a Field Oxygenation Device and Its Practice in the Oxygen Depleted Water Mass  

Lee, Yong-Hwa (Marine Environment Research Division, National Fisheries Research and Development Institute)
Kim, Young-Suk (Marine Environment Research Division, National Fisheries Research and Development Institute)
Shim, Jeong-Min (East Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Kwon, Kee-Young (East Sea Fisheries Research Institute, National Fisheries Research and Development Institute)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.16, no.4, 2010 , pp. 339-344 More about this Journal
Abstract
Oxygen depleted water mass can damage aquatic animals not only in direct way but also in indirect way by generating toxic substances including occurrence of hydrogen sulfide and ammonia which are also highly detrimental to animal life in the water mass. An oxygen dissolution device was developed, which makes turnover of the oxygen rich (over 20 mg/L) surface water down to the bottom where hypoxia is evident and tested the device in terms of oxygen recovery in the oxygen depleted bottom water. the device with turnover rates of $3.6\;m^2$/min at the liquid oxygen injection rate of 48~26.3 L/min could recover dissolved oxygen level to 7~25 mg/L at depth 7 m to lead to the dissolution level of over 90% by the supply of liquid oxygen. The running advantage of the device is that it does not require any auxiliary tank and higher energy for operation. Therefore, it can be highly useful device to relieve damages to the farmed animals in the oxygen depleted waters.
Keywords
Oxygen depleted water; Oxygen dissolution device; Mass mortality; Seawater of the high concentrated dissolved oxygen; Fishery environmental improvement;
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Times Cited By KSCI : 3  (Citation Analysis)
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