Water treatment and waste characterization evaluation of an intensive recirculating fish production system
A combination of two different technologies used for fish production was evaluated at the North Carolina State University (NCSU) F̀ish Barn facility. The combined system included the ECOFISH∗ tank, developed at the Norwegian Hydrotechnical Laboratory (NHL) at SINTEF (Trondheim, Norway) and water tre...
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| Veröffentlicht in: | Aquacultural engineering 1997-05, Vol.16 (3), p.133-147 |
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| creator | Twarowska, Joanna G. Westerman, Philip W. Losordo, Thomas M. |
| description | A combination of two different technologies used for fish production was evaluated at the North Carolina State University (NCSU) F̀ish Barn facility. The combined system included the ECOFISH∗ tank, developed at the Norwegian Hydrotechnical Laboratory (NHL) at SINTEF (Trondheim, Norway) and water treatment and recycle technology designed at NCSU. Approximately 2170 fingerling tilapia (
Oreochromis niloticus, Oreochromis niloticus × Oreochromis aureus) were grown from 3.6 to 507 g in 177 days in a 20 m
3 four-zone tank. The system design included patented particle traps at the bottom of each zone to remove feed waste and excrement, sludge collectors where the removed particles settled, a rotating screen filter for suspended solids removal, a high-rate linear-path trickling biological filter for nitrification, and two down-flow columns for oxygen injection. The measured suspended solids level in the tank zones were usually less than 7.5 mg l
−1. Based on six efficiency tests with a mean total ammonia nitrogen (TAN) concentration in the culture tank of 0.62 mg l
−1, the biofilter removed approximately 65% on a single pass through the filter, with an average removal rate per unit of filter surface area of 0.33 g TAN m
−2 day
−1. Sampling every 4 h over a 24-h period showed variability in concentrations and TAN removal rates by the biofilter. Six efficiency tests on the sludge collectors and the screen filter showed 80% and 41% suspended solids removal efficiency, respectively, based on the influent and effluent concentrations. On a daily basis, the sludge collectors and the screen filter each removed about 18% of feed volatile solids input, respectively, based on three 24-h periods studied. Fresh water use averaged approximately 1500 l day
−1, which was about 7% of the system volume. |
| doi_str_mv | 10.1016/S0144-8609(96)01022-9 |
| format | Article |
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Oreochromis niloticus, Oreochromis niloticus × Oreochromis aureus) were grown from 3.6 to 507 g in 177 days in a 20 m
3 four-zone tank. The system design included patented particle traps at the bottom of each zone to remove feed waste and excrement, sludge collectors where the removed particles settled, a rotating screen filter for suspended solids removal, a high-rate linear-path trickling biological filter for nitrification, and two down-flow columns for oxygen injection. The measured suspended solids level in the tank zones were usually less than 7.5 mg l
−1. Based on six efficiency tests with a mean total ammonia nitrogen (TAN) concentration in the culture tank of 0.62 mg l
−1, the biofilter removed approximately 65% on a single pass through the filter, with an average removal rate per unit of filter surface area of 0.33 g TAN m
−2 day
−1. Sampling every 4 h over a 24-h period showed variability in concentrations and TAN removal rates by the biofilter. Six efficiency tests on the sludge collectors and the screen filter showed 80% and 41% suspended solids removal efficiency, respectively, based on the influent and effluent concentrations. On a daily basis, the sludge collectors and the screen filter each removed about 18% of feed volatile solids input, respectively, based on three 24-h periods studied. Fresh water use averaged approximately 1500 l day
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Oreochromis niloticus, Oreochromis niloticus × Oreochromis aureus) were grown from 3.6 to 507 g in 177 days in a 20 m
3 four-zone tank. The system design included patented particle traps at the bottom of each zone to remove feed waste and excrement, sludge collectors where the removed particles settled, a rotating screen filter for suspended solids removal, a high-rate linear-path trickling biological filter for nitrification, and two down-flow columns for oxygen injection. The measured suspended solids level in the tank zones were usually less than 7.5 mg l
−1. Based on six efficiency tests with a mean total ammonia nitrogen (TAN) concentration in the culture tank of 0.62 mg l
−1, the biofilter removed approximately 65% on a single pass through the filter, with an average removal rate per unit of filter surface area of 0.33 g TAN m
−2 day
−1. Sampling every 4 h over a 24-h period showed variability in concentrations and TAN removal rates by the biofilter. Six efficiency tests on the sludge collectors and the screen filter showed 80% and 41% suspended solids removal efficiency, respectively, based on the influent and effluent concentrations. On a daily basis, the sludge collectors and the screen filter each removed about 18% of feed volatile solids input, respectively, based on three 24-h periods studied. Fresh water use averaged approximately 1500 l day
−1, which was about 7% of the system volume.</description><subject>Animal aquaculture</subject><subject>Animal productions</subject><subject>Aquaculture</subject><subject>Biofilter</subject><subject>Biological and medical sciences</subject><subject>Freshwater</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Nitrogen</subject><subject>Oreochromis aureus</subject><subject>Oreochromis niloticus</subject><subject>Pisciculture</subject><subject>Recirculating</subject><subject>Solids removal</subject><subject>Tilapia</subject><subject>Vertebrate aquaculture</subject><issn>0144-8609</issn><issn>1873-5614</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNqNkU2LFDEQhhtRcFz9CUIOInpoTdJJOjmJLH7BggcVj6GmuuJm6UmvSXpk_fVmZpa9rqcqqKfeCnm67rngbwQX5u03LpTqreHulTOvueBS9u5BtxF2HHpthHrYbe6Qx92TUq4458oNetNd_YRKmdVMUHeUKoM0sT9QKjG8hAzYpvEv1LgkRnuY11O7hAaymCqlEvfEMmHMuM5tmn6xEMslu87LtOKRLjctb_e0exRgLvTstp51Pz5--H7-ub_4-unL-fuLHpV0tXcolXMDoAZBhiwSN3zUCsR2a6TlYACtHPg4abQ0TSjHreUhBLKTDs4MZ93LU257we-VSvW7WJDmGRIta_HCDEpJo_4DlFJLye8HldLWaNlAfQIxL6VkCv46xx3kGy-4P7jyR1f-IMI744-uvGt7L24PQEGYQ4aEsdwty3HU0hzi350wat-3j5R9wUgJaYpNQPXTEu859A91t6rM</recordid><startdate>19970501</startdate><enddate>19970501</enddate><creator>Twarowska, Joanna G.</creator><creator>Westerman, Philip W.</creator><creator>Losordo, Thomas M.</creator><general>Elsevier B.V</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7TV</scope><scope>7UA</scope><scope>F1W</scope><scope>H95</scope><scope>H98</scope><scope>L.G</scope></search><sort><creationdate>19970501</creationdate><title>Water treatment and waste characterization evaluation of an intensive recirculating fish production system</title><author>Twarowska, Joanna G. ; Westerman, Philip W. ; Losordo, Thomas M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c429t-9c24993ac5a1e6e8ce060754a1bb6280a6ac82307d5c8eddc27b80fffe8d5f963</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Animal aquaculture</topic><topic>Animal productions</topic><topic>Aquaculture</topic><topic>Biofilter</topic><topic>Biological and medical sciences</topic><topic>Freshwater</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Nitrogen</topic><topic>Oreochromis aureus</topic><topic>Oreochromis niloticus</topic><topic>Pisciculture</topic><topic>Recirculating</topic><topic>Solids removal</topic><topic>Tilapia</topic><topic>Vertebrate aquaculture</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Twarowska, Joanna G.</creatorcontrib><creatorcontrib>Westerman, Philip W.</creatorcontrib><creatorcontrib>Losordo, Thomas M.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Aquaculture Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Aquacultural engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Twarowska, Joanna G.</au><au>Westerman, Philip W.</au><au>Losordo, Thomas M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Water treatment and waste characterization evaluation of an intensive recirculating fish production system</atitle><jtitle>Aquacultural engineering</jtitle><date>1997-05-01</date><risdate>1997</risdate><volume>16</volume><issue>3</issue><spage>133</spage><epage>147</epage><pages>133-147</pages><issn>0144-8609</issn><eissn>1873-5614</eissn><coden>AQEND6</coden><abstract>A combination of two different technologies used for fish production was evaluated at the North Carolina State University (NCSU) F̀ish Barn facility. The combined system included the ECOFISH∗ tank, developed at the Norwegian Hydrotechnical Laboratory (NHL) at SINTEF (Trondheim, Norway) and water treatment and recycle technology designed at NCSU. Approximately 2170 fingerling tilapia (
Oreochromis niloticus, Oreochromis niloticus × Oreochromis aureus) were grown from 3.6 to 507 g in 177 days in a 20 m
3 four-zone tank. The system design included patented particle traps at the bottom of each zone to remove feed waste and excrement, sludge collectors where the removed particles settled, a rotating screen filter for suspended solids removal, a high-rate linear-path trickling biological filter for nitrification, and two down-flow columns for oxygen injection. The measured suspended solids level in the tank zones were usually less than 7.5 mg l
−1. Based on six efficiency tests with a mean total ammonia nitrogen (TAN) concentration in the culture tank of 0.62 mg l
−1, the biofilter removed approximately 65% on a single pass through the filter, with an average removal rate per unit of filter surface area of 0.33 g TAN m
−2 day
−1. Sampling every 4 h over a 24-h period showed variability in concentrations and TAN removal rates by the biofilter. Six efficiency tests on the sludge collectors and the screen filter showed 80% and 41% suspended solids removal efficiency, respectively, based on the influent and effluent concentrations. On a daily basis, the sludge collectors and the screen filter each removed about 18% of feed volatile solids input, respectively, based on three 24-h periods studied. Fresh water use averaged approximately 1500 l day
−1, which was about 7% of the system volume.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0144-8609(96)01022-9</doi><tpages>15</tpages></addata></record> |
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| identifier | ISSN: 0144-8609 |
| ispartof | Aquacultural engineering, 1997-05, Vol.16 (3), p.133-147 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Animal aquaculture Animal productions Aquaculture Biofilter Biological and medical sciences Freshwater Fundamental and applied biological sciences. Psychology Nitrogen Oreochromis aureus Oreochromis niloticus Pisciculture Recirculating Solids removal Tilapia Vertebrate aquaculture |
| title | Water treatment and waste characterization evaluation of an intensive recirculating fish production system |
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