Microbial contamination of fish production waste after processing in eco biocomposters

Currently, the problem of processing various types of organic waste from agricultural and food production is becoming the most urgent, as they often have to be disposed of by paying for this service. At the same time, the cost of protein components of feed and, consequently, compound feeds is constantly increasing. In this regard, the development of new technologies and technical solutions for processing agricultural and food waste for possible use in animal feeding is becoming relevant. One of these technologies, which allows the production of animal feed products, is the biothermal processing of organic waste using special installations, for example, biothermal composters "ECO" produced by LLC Radian Proekt and JSC PK ECO. Technological solutions used in ECO biocomposters have made it possible to create a fully autonomous machine for the disposal of food and organic waste of various volumes. The article presents the results of a chemical analysis of the resulting compost after processing fish waste (adult rainbow trout) for compliance with certain qualitative indicators. In the conducted studies, it was found that the average mass of waste and bacteria (bio-mixture) loaded for processing at one time decreased by 16.1 times and amounted to 1,9 ± 0,2 kg, the moisture content was 1.9%, the mass fraction of water-soluble carbohydrates increased to 6,8%, the protein content increased to 10,5% compared with the initial product.