Municipal waste collection in Zagreb

U radu se analizira proces prikupljanja komunalnog otpada u gradu Zagrebu s aspekta utjecaja transporta na ukupnu održivost sustava. Proces prikupljanja otpada odvija se u cestovnoj infrastrukturi gradova tj. mrežama transportnih puteva, pa je logično rješenje primjena metoda rješavanja problema usmjeravanja vozila i korištenje pripadajućih algoritama. U radu se prvo u poglavlju 2 prikazuju teorijske osnove optimizacije na mrežama, s detaljnijim pregledom metoda i algoritama koji se mogu primijeniti u optimizaciji prikupljanja komunalnog otpada. Nakon toga se u poglavlju 3 na temelju dostupnih izvora i dobivenim primjerima ruta prikupljanja proces analizira temeljem izračuna ruta odabranim algoritmom te usporedbama sa stvarnim rutama. Poglavlje 4 posvećeno je pregledu funkcionalnosti jednog odabranog softverskog rješenja za rutiranje vozila, uz elemente ekonomske analize i analize emisija stakleničkih plinova procesa prikupljanja otpada, a s ciljem ilustracije mogućnosti ušteda koje bi se ostvarile. Dodatno je dan primjer upravljanja komunalnim otpadom u Ljubljani.The paper analyzes the municipal waste collection process in the city of Zagreb from the perspective of the impact of transport on the overall sustainability of the system. The process of waste collection takes place in the road infrastructure of cities, i.e. networks of transport routes, so the logical solution is the application of methods for solving vehicle routing problems and the use of associated algorithms. In chapter 2, the paper first presents the theoretical foundations of network optimization, with a more detailed overview of methods and algorithms that can be applied in the optimization of municipal waste collection. After that, in chapter 3, on the basis of available sources and obtained examples of collection routes, the process is analyzed based on the calculation of routes by the selected algorithm and comparisons with real routes. Chapter 4 is devoted to an overview of the functionality of one selected software solution for vehicle routing, along with elements of economic analysis and analysis of greenhouse gas emissions of the waste collection process, with the aim of illustrating the potential savings that would be achieved. Additionally, an example of municipal waste management in Ljubljana is given