QUALITY CHARACTERISTICS OF TECHNOLOGICAL WASTE WATER AFTER HYDRAULIC UNLOADING FISH AT PORTS
 
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Morski Instytut Rybacki – Państwowy Instytut Badawczy, ul. Kołłątaja 1, 81-332 Gdynia
Publication date: 2015-07-25
 
Inż. Ekolog. 2015; 43:172–178
 
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ABSTRACT
In this study characterization of sensory and physical-chemical properties of representative samples of technological waste water after hydraulic unloading fish from fishing vessels, including fishing boats equipped with RSW (Refrigerated Sea Water System) or CSW (Chilling Sea Water System) system was described. Sensory quality and analytical determinations in technological waste water samples was analyzed. They demonstrated that their sensory quality attributes and physical-chemical properties were different and depending on the destination of fish caught (consumption or industrial fishing), contact time-caught fish with seawater and water temperature (winter or summer season). Because technological waste water has a lot of substance content of protein, fat, nitrogen, phosphorus and chlorine compounds it is a threat to the natural environment. In connection with such a broad problem of utilization of technological waste water from fishing boats for Baltic fish is one of the most important issues to solve for fishermen and environmentalists.