The most common livestock manure in the world is slurry, which is stored in manure pits, lagoons, etc. Excrement is usually removed from the barn through concrete grates or through a corridor, and the livestock have lying boxes, where it is necessary to regularly change the litter for the well-being of the livestock. In order to reduce storage capacities and the need for large quantities of litter, many farmers decide to purchase a slurry separator. A slurry separator is an agricultural machine that separates slurry into solid and liquid fraction. The solid fraction can be used by farmers as bedding for livestock. The master thesis describes how the slurry separator, works, its advantages and disadvantages, types of separators, etc. The main part of the master thesis is an experiment that we carried out on an intensive livestock farm, which raises dairy cows. The reason for the experiment was the question of how the nutrients from the slurry are distributed into the two fractions after separation. On the farm, we took 9 samples, 3 samples of non-separated slurry, 3 samples of the liquid fraction after separation and 3 samples of the solid fraction after separation. The samples were analyzed for the content of basic nutrients and some other properties. The results of the analysis showed that the solid fraction after separation contained the most organic substances among the samples, as a result of which the most nitrogen and phosphorus were also measured in the solid fraction. Most of the ammonium nitrogen was in the liquid fraction. The contents of potassium were highest in the unseparated slurry and in the liquid fraction after separation. According to the collected data on the nutrient balance at the farm, the farm has large excesses of nitrogen per hectare of agricultural land in use, while the excesses of phosphorus and potassium are in the optimal range. According to the soil analysis, the farm could sell only a small proportion of the solid fraction (up to 10%), because with a larger large-scale sale, too much organic matter that the fields need would be lost.
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