UTILIZATION OF LIQUID WASTE FROM FISH PROCESSING

Food Science

Liquid waste is ejected liquid from a community and industrial environment where the main component is water and contains solid matter consisting of organic and inorganic substances. The purpose of this study was to analyze the sources of fish processing wastewater and provide alternative utilization of fish processing wastewater. Liquid waste from the fish processing industry can come from various stages from handling fish to processing. The fish handling stage will produce liquid from the process of washing fresh fish, cutting and washing before processing. The product processing process can produce liquid waste from the boiling and steaming process. Liquid waste contains blood, fat, liquid from the stomach contents and water from the rest of the processing process. Fishery industry liquid waste contains high organic matter. Wastewater treatment techniques that have been developed are generally divided into 3 treatment methods namely physical, chemical and biological treatment. Products that can be produced from fish processing wastewater include materials for making fish crackers, “petis” paste, a source of flavor in powder and liquid form, as a source of omega 3 lipids, and organic liquid fertilizer. The resulting product can add economic value and minimize the impact of the liquid waste on the environment.

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