Production of electricity and thermal energy from biogas while obtaining drinking water

Tema ovog diplomskog rada je izrada postrojenja koje će proizvoditi električnu i toplinsku energiju iz bioplina uz dobivanje pitke vode. U uvodnom dijelu opisana su svojstva biomase i bioplina uz osvrt na podrijetlo biomase te proces dobivanja bioplina putem anaerobne digestije. Također su u sklopu uvodnog dijela opisana svojstva i struktura vode, tehnologije za obradu vode i detaljnije ultrafiltracija koja je upotrebljena u radu. Drugi dio se odnosio na primjenu bioplina i digestata te opis dijelova postrojenja i princip rada. U završnom dijelu se fokus stavio na dimenzioniranje bioplinskog postrojenja i sustava za obradu vode gdje je ulazni parametar 300 grla goveda na farmi u općini Rajić. Pomoću broja grla goveda dobiva se količina stajskog gnoja i ostataka od branja pšenice te potrebna količina vode za napajanje stoke. Bioplin dobiven anaerobnom digestijom koristio bi se u motor generatoru za proizvodnju električne i toplinske energije. Za obradu vode u jezeru odabire se tehnologija ultrafiltracije, a sukladno s njome membranski moduli za pročišćavanje te napojne pumpe.The topic of this master thesis is the construction of a plant that will produce electricity and thermal energy from biogas while obtaining drinking water. In the introductory part, the properties of biomass and biogas are described with reference to the origin of biomass and the process of obtaining biogas through anaerobic digestion. Also, in the introductory part, the properties and structure of water, technologies for water treatment and the ultrafiltration used in the work are described in more detail. The second part is related to the application of biogas and digestate with the description of the biogas plant and the principle of operation. In the final part, the focus was placed on the calculation of the biogas plant and water treatment system, where the input parameter is 300 cattles on the farm in Rajić. Feedstock is obtained by using the cattle manure and residues from wheat harvesting. Biogas obtained by anaerobic digestion would be used in a motor generator for the production of electricity and heat. For the treatment of water in the lake, ultrafiltration technology is chosen with proper membrane modules and feed pumps