Poultry waste detoxification technology development using biocatalytic processes

The purpose of research is to develop a technology for the detoxification of poultry waste using biocatalytic processes. Currently, many poultry farms have become sources of environmental pollution, thereby causing serious environmental problems, economic and social damage. The problem of reliable protection of the natural environment from pollution by bird droppings is currently relevant. Bird droppings contain various acids, nitrogen, phosphorus and potassium, heavy metals. Humic substances isolated from brown coal have a sufficiently high sorption activity and are used as cheap sorbents to solve a number of environmental problems in industry. The main disadvantage of the anaerobic digestion process is the low reaction rate, even with significant heating of the reaction mass, which leads to the need to create large-volume bioreactors and, accordingly, increases the capital costs for the construction of processing facilities. The method of obtaining organic fertilizer decides the task of creating an appropriate method, the implementation of which ensures the achievement of a technical result, which consists in reducing the time spent on the fermentation of bird and animal excrement, preserving organic and mineral substances in the final product and improving their quality, increasing the environmental friendliness of the method due to the use of a humic sorbent to convert salts into an insoluble state heavy metals and other toxic substances. Based on research, a technology has been developed for obtaining organic fertilizer from poultry waste by the method of anaerobic fermentation of chicken manure with moisture at a temperature of 27-50 °C with the addition of sodium humate. The fertilizer is intended for use in agricultural production, horticulture, floriculture, forestry, urban farming, household plots in order to increase productivity and quality of crop production. For the developed technology, an application was submitted to obtain a Patent for the invention of the Republic of Kazakhstan “Method to obtain organic fertilizer” (priority No. 2021-22818, dated 07/13/2021).