Review article

Treatment of wastewater from fish processing industry

Stanka Zrnčević orcid.org/0000-0002-8984-5944 ; Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, Croatia

Abstract

The treatment of fish processing wastewater poses a major ecological problem, thus it cannot be discharged into the environment without a preliminary treatment. The high values of organic pollution, a presence of toxic and inhibitory substances and a seasonality and daily variations of fish processing require a combination of different processing procedures in order to make this wastewater harmless and comply with legal criteria for its discharge into the environment or a public sewerage system.
The paper briefly describes fish processing procedures since they, along with fish species that are processed and intended products, directly influence the quantity and quality of generated wastewater. It further contains data on wastewater composition, its impact on the marine and coastal ecosystems as well as the impact of toxic ingredients on different test organisms. Based on the insight into research results published in literature, it describes the most frequently used processing procedures and quotes data on the efficiency of individual procedures on achieving a reduction in indicators of wastewater load originating from fish processing.

Keywords

fish processing wastewater; origin; chemical composition; toxic impacts; processing methods

Hrčak ID:

223138

URI

https://hrcak.srce.hr/223138

Publication date:

28.6.2019.

Article data in other languages: croatian

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