کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6381500 | 1324094 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Solids removal at a recirculating salmon-smolt farm
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم آبزیان
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The objective of this study was to determine the solids separation efficiency of the four swirl separators and the drum filter within one of the water recirculation systems (RAS) of a salmon-smolt hatchery. Water flowrates and concentrations of total suspended solids (TSS) within the RAS were measured weekly over 5 weeks in 2004 and 4 weeks in 2005. During the study, the hydraulic retention time in the tanks was 2.8Â h and the feed rate ranged between 0.16 and 0.84Â kg/m3 of make-up water. The system volume replacement rate and the water flow recycle rate were respectively 21%/day and 96% in 2004, and 50%/day and 91% in 2005. A mathematical model was developed to determine the transient concentration of fine particles in the recirculation loop. By fitting the predictions of the model to the measured TSS concentrations, it was determined that about 15% of the waste generated within the RAS (assumed equal to 20% of daily feed rate) was removed by the system overflow water. Using this information and TSS data from the backwash water of the drum filter, it was calculated that the swirl separators and drum filter removed respectively 63% and 22% of the waste solids rejected by the fish.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquacultural Engineering - Volume 41, Issue 2, September 2009, Pages 71-77
Journal: Aquacultural Engineering - Volume 41, Issue 2, September 2009, Pages 71-77
نویسندگان
Michel Couturier, Thérèse Trofimencoff, José Utge Buil, Jessica Conroy,