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Cleaner Technology Projects in Denmark 1996

Review of Cleaner Technology in the Fish Processing Industry

The reviewed technology projects are completed in the herring filleting industry, the tinned herring industry, the beluga industry and the shrimp industry.

The primary target group is expected to include the herring industry, the mackerel industry, the beluga industry and the shrimp industry together with the engineering firms who work with local authority wastewater-treatment plants and the administrative authorities. The secondary target group consists of fishmeal factories and the food industry in general.

The first section presents the preliminary investigation from 1988 into the possibilities of implementing cleaner technology in the fish-processing industry. The following sections treat the more specific experiments with cleaner technology in the single fish processing industries.

Subsequently, the results of the preliminary investigation from 1988 are presented. The investigation includes a statement of the water consumption, the concentration of wastewater and a number of proposals on how to purify wastewater.

Further, the environmental project number 97 "Cleaner Technology in the Fish Processing Industry" is presented. The project is a fact-finding mission, which was carried out in the period between 1987-88. The project deals with 9 representative firms from the herring industry and the beluga industry. The water consumption and the environmental impacts of the different stages of the firms’ production are analysed.

The information system for cleaner technology (Rentek) is presented. The filleting of herrings, whether the final product is a fresh or frozen fillet, is given as an example.

Projects completed in the fish processing industry are presented. The aims of these projects were to develop practical and economic methods for reducing the water consumption, the level of pollution of the wastewater, and to increase the sales value of waste products.

In a separate section, projects completed in the tinned herring industry are presented. The aims of these projects were to develop practical and economic methods for reducing the water consumption and the level of pollution of wastewater.

There do not exist any projects on cleaner technology in the beluga industry. In stead, it is estimated what effects can be expected on the water consumption and the emission quantities if the industry learns from the experience and technologies of similar actions of the herring industry.

In the shrimp industry the aim of the projects was to find a practical and economic method for reducing the water consumption and the level of pollution of wastewater. Another aim was to find alternative market possibilities for the by-products from the production.

Finally, the project "Cleaner Technology in Cleaning" (Renere teknologi ved rengøring) is presented. The aim is to investigate the possibilities of introducing cleaner cleaning technology in the roundfish industry and the flatfish industry. In this section, a project, which looks into the possibilities of purifying the herring industry’s wastewater to a degree, which ensures that the wastewater can be recycled, is presented.

Author/ institution

Erik Andersen, Matcon; Alex Veje Rasmussen, DIFTA: Kaj Rasmussen, Hembi; Greta Jakobsen, Højmarkslaboratoriet

This report is subsidised by the National Council for Recycling and Cleaner Production

ISSN no. 0105-3094
ISBN no. 87-7810-538-3

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