| Abstract [eng] |
The continuous growth of agricultural waste is a serious problem for the proper waste management on farms. Currently, widely used biodegradable waste (BDW) management methods in Lithuania (mainly, manure storage and fertilizer in the field (up to 78%)) have a very negative on the environment impact and human health, for example, on air quality due to air pollutants, impact on climate change due greenhouse gas (GHG) emissions, discomfort of the surrounding population and workers due to odors, parasitological / microbiological pollution, soil and groundwater pollution with nitrates, etc. The aim of the work was to analyze the environmental impact reduction by biological treatment of BDW from livestock farms and other agricultural BDA, focusing on the possibilities of using probiotic substances (microbiological preparations) in agriculture, so optimizing BDA management, reducing the environmental impact, improving the quality of produced compost. An experiment was conducted during the study: composting of the cattle breeding BDW by tradition method and using probiotic substances SCD Odor Away was carried out and compared. The results of the study show that the current waste management method (manure storage and field fertilization) has a significant negative environment impact due to air pollution and GHGs. During this BDW management method air pollutants (NH3, NMML, NOx, KD, CO) from farms’ stationary and mobile sources are up to 3.8 tonnes per year, GHGs - over 200 tonnes per year. When agricultural BDW are composted, air pollution decreases by 92.9% and GHGs - by 96.88%. During the experiment , measurements of concentration of NH3 emissions were made, it was determined that the use of probiotic substances for manure composting with other agricultural BDW reduces the emissions of these air pollutants by 97.5% and GHGs - by 96.88% compared to existing waste management. The results of the experiment, the feasibility analysis of composting alternatives, as well as recommendations for agricultural livestock objects due to BSA composting, reducing environmental impact, human health and increasing the value of the compost produced, are included. . |
