BIOENERGETIC AND ECOLOGICAL-ECONOMIC EVALUATION OF THE USE OF SEWAGE SLUDGE
Conducted bioenergetic and ecological-economic assessment of soil disposal of sewage sludge as fertilizer. Bioenergetic efficiency of using salt as a fertilizer in one of their making was calculated by the total energy costs of cultivation and accumulation of potential energy in the yield of the main products Determined the estimated coefficient of energy efficiency for the single application of sewage sludge dose 12T/ha With a single application of sludge wastewater at a dose of 12 t/ha found that they are high-energy perspective fertilizer. Energy accumulation in the yield increase in a single application of sludge from wastewater treatment plants provided the greatest increase energy efficiency ratio in the third year of the aftereffect. The results of the calculations showed high efficiency of the salt and mineral fertilizers as additional costs. Optimal economic conditions and high return on investment obtained by the cultivation of spring wheat at a dose of 20 t/ha of salt, corn - 40 t/ha of salt. At these doses the greatest profitability and return on investment.