Fish rearing system
This invention relates to a fish rearing system having a water circulation system for circulating the rearing water in a fish rearing water tank, and, particularly to a fish rearing system capable of performing water quality control at a low cost by a rational combination of devices. A fish rearing...
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Format | Patent |
Language | English |
Published |
07.05.2002
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Online Access | Get full text |
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Abstract | This invention relates to a fish rearing system having a water circulation system for circulating the rearing water in a fish rearing water tank, and, particularly to a fish rearing system capable of performing water quality control at a low cost by a rational combination of devices.
A fish rearing system having a water circulation system comprising: a trapping section including a particle trap for capturing residual feed and fish feces contained in the water, a sediment trap for accumulating a sediment in a rearing tank and separating the sediment from the water, a residual feed detecting sensor interposed in a pipe communicating with the particle trap and the sediment trap and a micro-screen filter a denitrification device for denitrifying a nitrogen compound dissolved and contained in the water; a bubble surfacing device for generating bubbles by supplying air and/or ozone and removing surface active substances contained in the water by capturing the bubbles; an ultraviolet disinfection device for disinfecting the circulating rearing water; an ammonium treatment section consisting of a immersion treatment device and a non-immersion treatment device and having a function of decomposing ammonium contained in the water; and an aeration device for dissolving oxygen into the water; wherein the denitrification device is disposed at the upstream of the bubble surfacing device and includes a bypass pipe Thus, the fish rearing system capable of performing water quality control at a low cost can be obtained by a rational combination of devices. |
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AbstractList | This invention relates to a fish rearing system having a water circulation system for circulating the rearing water in a fish rearing water tank, and, particularly to a fish rearing system capable of performing water quality control at a low cost by a rational combination of devices.
A fish rearing system having a water circulation system comprising: a trapping section including a particle trap for capturing residual feed and fish feces contained in the water, a sediment trap for accumulating a sediment in a rearing tank and separating the sediment from the water, a residual feed detecting sensor interposed in a pipe communicating with the particle trap and the sediment trap and a micro-screen filter a denitrification device for denitrifying a nitrogen compound dissolved and contained in the water; a bubble surfacing device for generating bubbles by supplying air and/or ozone and removing surface active substances contained in the water by capturing the bubbles; an ultraviolet disinfection device for disinfecting the circulating rearing water; an ammonium treatment section consisting of a immersion treatment device and a non-immersion treatment device and having a function of decomposing ammonium contained in the water; and an aeration device for dissolving oxygen into the water; wherein the denitrification device is disposed at the upstream of the bubble surfacing device and includes a bypass pipe Thus, the fish rearing system capable of performing water quality control at a low cost can be obtained by a rational combination of devices. |
Author | Minami, Akio Morimura, Shinji Kawaguchi, Shinichiroh Gruenberg, Daniel Edward |
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CorporateAuthor | Hitachi Metals, Ltd Jifas Corporation |
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References | Moe, Jr. et al. (3741158) 19730600 Knowles (4297973) 19811100 Baba et al. (5732655) 19980300 Lee et al. (5961831) 19991000 Moe, Jr. et al. (3765372) 19731000 Fahs, II (5353745) 19941000 Sanders (3661262) 19720500 |
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