FIELD: agriculture.
SUBSTANCE: method of preparing poultry droppings coming from poultry farms and poultry production units for subsequent anaerobic fermentation with the production of biogas and organic fertiliser provides for preparation of poultry droppings or dropping mixture to the maximum humidity of 91%, the ratio of carbon:nitrogen:phosphorus 25:1:1, pH 7÷8.5, the optimum temperature not exceeding 64°C, depending on the size of the sludge digester, the size of droppings or dropping mixture, comparable to the size of bacteria, adding the activated sludge of anaerobic origin to neutralise the effect of products of sanitisation and vaccination, using the two-stage fermentation.
EFFECT: invention enables to bring the substrate to optimum humidity, to create a certain ratio of nitrogen and carbon.
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