Vermifiltration method of biological water purification in recycling plants

A pilot plant has been developed for complex treatment of recycled water and waste disposal in an integrated multitrophic aquaculture circulation system by vermifiltration using eurocubes. The efficiency of the plant in the processes of recycling water regeneration and the possibility of obtaining additional organic products from aquaculture waste - biomass of compost worms and organic fertilizer vermicompost are analyzed. It has been proved that vermibiofiltration significantly reduced such unfavorable metabolic products as ammonium nitrogen, nitrites, nitrates and phosphates in recycled water, which is associated with the consumption and decomposition of these compounds by compost worms, soil microorganisms and microflora of the biofilter of these compounds during their metabolism. At the same time, an improvement in water quality was observed, which creates a favorable habitat and has a positive effect on fish health, increasing the viability and productivity of the fish population.