Economic and Geographical Prerequisites for the Development of Composting in the Tyumen Region

Aim. To analyze the economic and geographical prerequisites for the optimal organization of aerobic composting as a promising method of processing organic waste in the Tyumen region.
Methods. To calculate the economic feasibility, a comparison of the costs of obtaining fertilizer volumes was performed, taking into account the current needs of the agricultural sector of the Tyumen region under different scenarios: a) the use of aerobic composting and b) the purchase of demanded types of fertilizers. To carry out a differentiated assessment of the prospects for the introduction of a composting system at the municipal level, the sums of active temperatures above 10°C and the maximum number of favorable days for the active phase of aerobic composting were compared. Considering that at average daily air temperatures above 10°C, the activation of bacterial activity in the composting process is noted, this circumstance determined the choice of this indicator as the main one for the ongoing assessment of the prospects for the introduction of a composting system.
Results. It is shown that aerobic composting is a promising area of organic waste processing for the Tyumen region. And in the context of the increasing needs of farmers for affordable fertilizers corresponding to regional soil conditions and unique peat reserves against the background of a steady increase in average temperatures, this is also the direction of providing raw materials to the agro–industrial complex. Based on a comparison of the values of the sum of active temperatures and the number of days with temperatures above 10 °C, the Tyumen Region was zoned (within the boundaries of municipalities) according to the prospects for the development of composting in the territory. It was revealed that according to the ratio of the number of days favorable for aerobic composting and the highest value of the sum of active temperatures, the best conditions for the development of composting of organic waste have developed on the territory of the Berdyuzhsky and Kazan municipal districts located in the southeastern part of the Tyumen region.
Research implications. The systematization of values for the sum of active temperatures, the number of favorable days for composting, and the dynamics of climatic indicators with a focus on municipalities within the borders of the subject of the Russian Federation was performed. The proposed approach can be used to assess territorial differentiation according to the acceptability of composting in other regions.

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