Solutions due to environmental impact during stroke release
In recent years and decades, satisfactory solutions to sludge discharge have been sought. Considerable emphasis has been placed on finding ways to process the slug into usable products that could be sold. This work has mainly been done by individuals, organizations and institutions. In this connection, one can mention plans for digestion from slag to feed production, but these experiments were well under way in the mid-1980s. It can be said that the problem with slag processing is twofold. The slag is damaged very quickly, which makes it difficult to use it in certain products. Secondly, the transport cost is high compared to the value of the product made from slag. The way in which slag is discharged varies greatly from one situation to another, but the growing emphasis on environmental issues in recent years has fueled old ideas about the utilization of slag.
In recent years, a considerable effort has been made to ensure a proper disposal of viscera from fish processing. The emphasis has been on processes that could return a marketable product. In the late 20th Century a lot of this work was focused on silage production. There are mainly two major problems with regard to the processing of viscera: Firstly, viscera spoils very rapidly, which makes it difficult to use in many products. Secondly, the cost of transportation is very high compared to the value of the products processed from viscera. Handling of viscera is very diverse in different places but increased emphasis on environmental issues has raised the issue of utilization again.