Using of the potential of hydrobionts for the conversion of biosources and wastewater pollution

A new technology of processing of bioremediation with obtaining energy carriers while simultaneously clearing sewage from fish farms with a closed cycle of water supply has been developed. A closed cycle of waste processing has been created, in which at each stage the necessary association of microorganisms is selected. The purification of sewage from biogenic elements is proposed with the help of microalgae, the metabolism of which is guided by change for the purpose of increased release of triacylglycerols (raw materials for biodiesel fuel production). Algae wastes and culture media are proposed for use in fish breeding. The final products of the proposed biotechnology are organisms of higher trophic levels, whose biomass growth can be utilized as feed for fish. High quality clean water conditions make it possible to minimize discharges into natural reservoirs and significantly increase recycling rates (up to 90-95%). It has been established that the cultivation of slashes in the treatment plants of UZV allows transformation of 97-99% of the dissolved nitrogen and phosphorus compounds into fish valuable for fish, resulting in a 15-20% decrease in the need for feed, reducing the cost of water purification and the volume of generated waste. It is determined that the level of mineralization of formed sediments reaches 65-70%. The high fodder value of oligochaetes can significantly reduce feed costs for younger age groups of fish, which is positively reflected in the cost of grown products. The parameters of biotechnological process of cultivating microalgae Chlorella vulgaris with high content of lipid fraction for obtaining biodiesel fuel for use of bird droppings extract are determined. In order to increase the hydrogen output, for the first time, it is proposed to combine the enzymatic process of processing low-potential bioenergy raw materials with a biofuel element, for which both biofuels and electric energy can be produced simultaneously

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