THE EVALUATION OF THE EFFICIENCY OF TROUT FARMS BIOLOGICAL WASTE UTILIZATION BY ANAEROBIC DIGESTION IN HARSH CLIMATIC CONDITIONS (CASE OF TROUT FARMS IN KARELIA)

The fishing industry in the Karelian Republic faces several challenges, including harsh climate, lack of access to electricity, a ban on the disposal of production waste, fines for emissions into the air when they are burned. A solution for fish farming can be methane digestion in a biogas plant. With the proper organization of the technological process, the management will be able to achieve several goals at once: disposal of accumulated waste in an environmentally friendly way, eliminating the negative impact on the environment; production of additional energy - biogas, which can be converted into electricity or heat; the formation of an organic fertilizer that will be in demand due to the number of the components and the absence of a pathogenic environment.