SILVA, Alessandra dos Santos; http://lattes.cnpq.br/1192191345858535; SILVA, Alessandra dos Santos.
Resumo:
Solid waste deemed hazardous, although they may be present in small
amounts in the composition of Municipal Solid Waste (MSW), feature
importance, since they contribute to toxicity of the environment in which they
live. Among the hazardous waste fractions present in MSW, the metals are at
greatest concern because they have intrinsic characteristics that can cause
extensive damage to public health and the environment. In addition, the
byproducts generated by the decomposition of the waste can also cause
deleterious effects to the environment, like the nitrogen compounds, especially
ammonia, which at high levels, it is toxic, hindering the degradation processes.
Therefore, the search for alternative technologies for proper management of
MSW and understanding of their behavior after disposal has meant that more
and more studies are developed for this purpose. Thus, this work aimed to
analyze the effect of the toxic components present in municipal solid waste in
the city of Campina Grande - PB, after its disposal in an experimental cell. The
experiment consisted of the construction, instrumentation, development of
statistical planning and completing an experimental cell simulating a landfill cell
at full scale. After filling, the physical characterization of waste was carried out
and samples were collected every month to monitor the behavior of physicalchemical, microbiological and mineralogical parameters as well as the influence
of toxicity in MSW, along the time and depth. The results showed that the waste
from the city of Campina Grande - PB, according to NBR 10.004 / 2004 can be
classified as hazardous waste (Class I). However, this affects the hazardous
biodegradation process, since the microorganisms have the ability to adapt to
adverse conditions and therefore resist the effects that can cause toxic
compounds. In short, the MSW in the city of Campina Grande - PB have
potentially toxic to the environment and public health, but they are not toxic to
the degradative activity that occurs within the mass of solid waste.