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WASTE LOADINGS FROM A FRESHWATER ATLANTIC SALMON FARM IN SCOTLAND 1
Author(s) -
Kelly L. A.,
Stellwagen J.,
Bergheim A.
Publication year - 1996
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1996.tb04070.x
Subject(s) - environmental science , phosphorus , water quality , salmo , hydrology (agriculture) , fish farming , total suspended solids , biochemical oxygen demand , outflow , aquaculture , zoology , fishery , chemical oxygen demand , environmental engineering , ecology , fish <actinopterygii> , wastewater , chemistry , biology , oceanography , geotechnical engineering , organic chemistry , engineering , geology
Recent studies suggest that waste generation from the freshwater phase of Atlantic salmon ( Salmo salar L.) production varies considerably on an annual basis. A fish farm on the West Coast of Scotland was visited regularly during a two‐year period to determine inflow and outflow water quality. Waste output budgets of suspended solids (SS), biochemical oxygen demand (BOD), total nitrogen (TN), total phosphorus (TP), total ammonia nitrogen (TAN = NH 3 +NH 4 + ), dissolved reactive phosphorus (DRP) and total phosphorus (TP) were produced. The annual waste loadings obtained were 71 kg TN t fish −1 yr −1 (one year of data only), 10.9–11.1 kg TP t fish −1 yr −1 , 1.2–2.1 kg DRP t fish −1 yr −1 , 422–485 kg BOD 5 t fish −1 yr −1 , 327–337 kg SS t fish −1 yr −1 , and 30–35 kg TAN‐N t fish −1 yr −1 . Simple linear regression models relating waste parameter production to water temperature and feeding regime were developed. When compared to existing data for other salmonid production systems, greater ranges of daily waste loadings were observed. Wide variations in concentrations of these parameters during a daily cycle were also observed, suggesting that mass balance estimates of waste production will provide more robust estimates of waste output than frequent monitoring of outflow water quality.