Gravimetric composition of urban solid waste from the city of Manaus – AM

Abstract

Research carried out by Abrelpe (2022) reveals that in 2022, 81.8 million tons of solid urban waste (MSW) were generated in Brazil, which means that each Brazilian citizen generated 381 kg of MSW, whose destination is landfills and dumps. Extinguishing or at least reducing landfills and dumps across the country is the desire of the entire population. It would greatly reduce health problems for the population, soil and river pollution, etc. The goal stipulated by the National Solid Waste Plan - PLANARES, of Federal Law No. 12.305/10 - National Solid Waste Policy (PNRS, 2010) is to get rid of dumps and landfills as final disposal sites for solid urban waste (MSW). by the year 2030. Factors such as the progressive increase in population combined with consumption and waste behavior, lack of public awareness, low percentage of other possible treatments, such as recycling, composting, biodigestion, have taken away hope of success for this goal . The city of Manaus, capital of the state of Amazonas, located in the central part of the Amazon jungle deposits more than one million tons of MSW per year, in an area of 66 hectares that has a useful life until the end of 2024. This work has The objective is to describe the activities carried out to characterize urban solid waste destined for the city's landfill through gravimetric analysis, consisting of three stages, required by NBR 10,007/2004: division, identification and weighing of waste categories. It was also possible to determine the apparent specific weight of these residues. The studies were carried out in eleven neighborhoods, between the months of July and October 2022. With these data in hand, a large amount of material was found to be able to be recycled (60% + 2%), despite publicity campaigns by the public authorities. , with an average apparent specific weight of 74 kg/m³. Thus, it is concluded that selective collection and sorting are of paramount importance, as alternatives for the reduction of waste destined for the city landfill, allowing its useful life and the reuse of recyclable materials, bringing economic, social and environmental benefits to the city. city and its inhabitants.

DOI:https://doi.org/10.56238/interdiinovationscrese-053