Comparison of biowaste composting in small decentalized composting devices : diploma thesis

Decentralizirani uređaji za kompostiranje su danas prepoznati kao ključ za rješavanje problema zbrinjavanja biorazgradivog otpada u urbanim područjima te predstavljaju korak ka postizanju održivosti preradom manjih količina otpada na izvoru njegovog nastanka. U ovom radu je uspoređen proces kompostiranja biootpada u tri decentralizirana kompostera: „C-EcoForHome komposteru“ uz dodatak inokulanta s anaerobnim mikroorganizmima i dva „Organko“ kompostera uz dodatak inokulanta s aerobnim te bez dodatka mikroorganizama. Tijekom procesa kompostiranja uzorkovana je kompostna masa i nastala procjedna voda te su ispitani fizikalno-kemijski pokazatelji. Nakon procesa kompostiranja, dobiveni predkomposti su podvrgnuti dozrijevanju u dvije vrste tla, a nastala procjedna voda je obrađena hibridnim postupkom elektrokoagulacije uz dodatak sintetskog zeolita NaX. Temeljem dobivenih rezultata izvedeni su zaključci o procesu kompostiranja biootpada u malim decentraliziranim. uređajima.Decentralized composting devices are recognized as the key to solving the problem of biodegradable waste disposal in urban areas, and represent a step towards achieving sustainability by processing smaller amounts of waste at the source. This paper compares the biowaste composting process in three decentralized composters: “C-EcoForHome” composter with the addition of inoculant with anaerobic microorganisms and two “Organko” composters with the addition of inoculant with aerobic and without the addition of microorganisms. During the composting process, the compost mass and the resulting compost leachate were sampled, and the physical and chemical indicators were analyzed. After the composting process, the obtained precomposts were subjected to maturation in two types of soil, while the resulting leachate was treated by a hybrid electrocoagulation process with the addition of synthetic zeolite NaX. Based on the obtained results, conclusions were drawn about the biowaste composting process in small decentralized devices