Avaliação da bioestabilização dos resíduos sólidos urbanos em lisímetro : estudo de caso : Cuiabá – Mato Grosso

Abstract

The biodegradation process solid waste landfills comprises steps of degradation of organic matter, which are not presented in a single stage or in an ordered sequence, but in a simultaneous number of different stages and ages, the development of which can vary with the physical, chemical and biological conditions associated with the landfill cells. In this context, this research aims to understand the biodegradation and geotechnical aspects (settlement) of MSW of the Cuiabá city lisímetro from monitoring simple execution

parameters that can assist the implementation and proper operation of small and medium- sized landfills in the state of Mato Grosso. So for better data collection, it has built a lysimeter

reinforced concrete, filled with solid waste from the city of Cuiabá, with a total volume of 6,47m3. The proposed monitoring included the climatological data through rainfall, air temperature and relative humidity; solid fraction of the inside of the lysimeter MSW through the parameters analyzed in the laboratory: moisture, volatile solids, non-volatile solids, nitrogen, phosphorus, temperature and pH; compressibility of MSW through repression and quality of leached through physical, chemical and bacteriological parameters. It was observed decrease over time most of the monitored parameters, but with lower values than those considered suitable by several authors to moisture, carbon / nitrogen and volatile solids. The climatic condition of Cuiabá with high temperatures, intense peaks of rainfall and long dry period interfered in the biodegradation process, but in general the adoption of humidity parameters, volatile and pH solids were adequate to evaluate the degradative kinetics of organic matter in the mass waste in the period studied.