OPERATING TESTS ANALYSIS OF LIQUID BIOLOGICALLY DEGRADABLE WASTE PROCESSING BY ANAEROBIC FERMENTATION

This study concerns the analysis of operating anaerobic fermentation systems of agricultural biogasstation and implementing a suitable system enabling the use of liquid biowaste. Based on thecomparison of the technological solutions and operating parameters of specifi c equipment a systemenabling the utilisation of biowaste has been designed. The tests made use of liquid substratescommercially off ered to biogas station operators. The study evaluates practical measurements at anagricultural biogas station in order to evaluate the biogas production from these substrates and theeffi ciency of transforming input material to usable energy. The use of such treated substrates for theanaerobic fermentation technology may have a substantial infl uence on the volume of dosed energycrops. The mixture of input substrates consisting of liquid cattle excrements, silage corn, liquid foodprocessingwaste, animal waste and glycerine water was experimentally validated. This mixture wascompared with the operation using liquid cattle excrements and silage corn. It was concluded that theproposed composition of input raw materials makes it possible to increase the production of biogasand el. power. On the other hand, it was identifi ed that the energy content of the input raw materialsis not optimally transformed into usable energy. Therefore, the proposed mixture of input materialswith biowaste is not recommended for use.