کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6381249 | 1625697 | 2016 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Survey of large circular and octagonal tanks operated at Norwegian commercial smolt and post-smolt sites
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
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چکیده انگلیسی
Maximum flow ranged from 3 to 19Â m3/min per land-based tank, with 400Â m3/min at the floating tank, but tank flow was adjustable at most facilities. Land-based tanks were flushed at a mean hydraulic retention time (HRT) of 35-170Â min. Maximum feed load on each land-based tank ranged from 525 to 850Â kg/day, but the floating tank reached 3700Â kg/day. Almost half of the large tanks reported in this survey were installed or renovated since 2013, including the three tank systems with the highest flow rate per tank (greater than 17.6Â m3/min). These more recent tanks were operated at more rapid tank HRT's, i.e., from 34.8 to 52.5Â min, than the 67-170Â min HRT typical of the large tanks built before 2013. In addition, flow per unit of feed load in land-based tanks that began operating before 2010 were lower (19-30Â m3 flow/kg feed) than in tanks that began operating later (33-40Â m3 flow/kg feed). In comparison, the floating tank operates at a maximum daily tank flow to feed load of 160Â m3 flow/kg feed, which is the least intensive of all tanks surveyed. Survey results suggest that the recently built tanks have been designed to operate at a reduced metabolic loading per unit of flow, a tendency that would improve water quality throughout the culture tank, all else equal. This trend is possible due to the ever increasing application of water recirculating systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquacultural Engineering - Volume 74, September 2016, Pages 105-110
Journal: Aquacultural Engineering - Volume 74, September 2016, Pages 105-110
نویسندگان
Steven T. Summerfelt, Frode Mathisen, Astrid Buran Holan, Bendik Fyhn Terjesen,