Study on the generation and composition of household solid waste in Ciudad Valles, S.L.P.

Abstract

The problem of the generation and composition of household Urban Solid Waste (RSU) in Ciudad Valles, San Luis Potosí was addressed. The information obtained could be used in making decisions about management and treatment for final disposal. To define the dwellings under study, the city was divided into socioeconomic strata with the support of the kmz tool, to visualize the Basic Geostatistical Areas (AGEB) according to the percentage of poverty. The generation of waste in the study area was determined through the NMX-AA61-1985 standard. For seven days, the selected dwellings were sampled, the quartering method was applied to the waste generated by means of the NMX-AA-15-1985 standard, and the samples were obtained for the physical-chemical analyses. The quantification of the by-products was carried out according to the NMX-AA-22-1985 standard. The organic fraction residues were the predominant in all the strata, being the medium marginalization stratum (EMM) the one that presented the highest percentage (49%). The physical-chemical characterization of the residues showed a moisture content of 52.48% and organic matter of 61.28%, results derived from the high composition of food residues that provide a higher percentage of water.