INNOVATIVE SOIL LIMING AND FERTILIZER MEANS PRODUCTION TECHNOLOGY

In addition to numerous factors, organic waste has a significant impact on increasing environmental pollution, which is an imperative for its solution. The goal of the work was to use the by-products of biogas production plants and cogeneration plants for soil fertilization, which allows to create a new innovative product from their mixtures. The preparation of the best mixtures applied and evaluated in greenhouses under production conditions was carried out at the companies JSC "Ziedi JP" and "Pampali". The production scheme of soil liming and fertilizer was developed and approved at both companies. The effectiveness of the composition of the mixtures was first tested on soils of different acidity in a greenhouse. The set of machines and aggregates required for the preparation and spreading of the new type of fertilizer on the field was made. Digestate, after complete development in bioreactors, is fed to the mechanical screw press separator, where it is divided into solid (dry matter 25 %<) and liquid (dry matter 3%>) fraction. The digestate of solid fractions is mixed with wood ash in portions in a screw-type mixer equipped with electronic scales. The ingredients are poured in parts so that the mixer mixes a uniform mass. After mixing, the new fertilizer is discharged from the mixer onto a conveyor belt and then into a pile, which is covered with a cover to reduce ammonium emissions. The use of the innovative soil fertility enhancer can be an effective way of recycling both products and can also be an environmentally friendly alternative to mineral fertilizers.