Analysis of technologies for processing poultry waste by granulation and drying

Abstract

At present, the technology of applying organic fertilizer in the form of simple composts is low-cost due to high transportation costs. Unlike mineral fertilizers, organic fertilizers are still applied by scattering in fields with subsequent plowing (humus) or by spraying from mobile tanks (liquid fertilizers). Therefore, in our opinion, the most effective way to dispose of chicken manure is application of granulation followed by dehumidification. The advantages of this scheme are the following considerations: fertilizer is virtually sterile from pathogenic microflora and weed seeds; dried at relatively low temperatures manure contains 80-85% organic matter, 4-5, 5% nitrogen, 2,6-2,8% P2O5, 1,3-1,8% K2O; after thermal drying, the mass of manure decreases by 3-4 times, therefore; now all serial agricultural machinery is fully adapted for the application of fertilizers in granular form.