Abstract
<jats:p>The use of cattle manure as an organic fertilizer holds promise for agriculture in the Russian Federation. A method for modeling the hydraulic system of a device for pumping a disinfectant solution may be useful for fine-tuning the process of disinfecting the manure before use. The aim of this study was to determine the range of changes in the hydraulic resistance of manure when saturated with a disinfectant solution. Experimental methods based on a full-scale experiment, simulation modeling, and numerical experiments to optimize the parameters, as well as an analysis of the obtained results, were used in this study. The experimental setup used for the full-scale experiments was created and described. A simulation model corresponding to the experimental setup, methods for bringing it to an adequate state, and a methodology for conducting numerical experiments to optimize the parameters of the manure hydraulic resistance are described. Cattle manure with varying moisture contents, from maximum to dry humus, was used in this study. Bird droppings were also used. The study allowed us to determine the range of variation in the hydraulic resistance of manure, expressed as a local resistance coefficient. It was shown that the local resistance coefficient varies more than 16.7 times depending on moisture content, ranging from 4.88 to 81.71. The results obtained allowed us to determine the direction of further research to ensure the necessary conditions for developing a technological process for disinfecting manure.</jats:p>