Título: | CHARACTERIZATION AND EVALUATION OF GROUNDWATER CONTAMINATION DUE TO HEAVY METALS IN A WASTE DISPOSAL AREA IN RESENDE, RJ | ||||||||||||
Autor: |
CRISTINA KEI YAMAMOTO DE OLIVEIRA |
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Colaborador(es): |
RAQUEL QUADROS VELLOSO - Orientador THAIS CRISTINA CAMPOS DE ABREU - Coorientador ANTONIO ROBERTO MARTINS BARBOZA DE OLIVEIRA - Coorientador |
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Catalogação: | 07/ABR/2022 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=58549&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=58549&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.58549 | ||||||||||||
Resumo: | |||||||||||||
The objective of this work is to evaluate the groundwater contamination due
to heavy metals from the Waste Disposal Area (WDA) in the municipality of
Resende, RJ. The scope consists of a preliminary assessment based on surveying
and mapping spatial data; in situ and laboratory investigation, including the
installation of monitoring wells, sampling and characterization of soils,
groundwater and waste leachate, hydraulic conductivity tests, K; and contaminant
plume modelling using the program MIKE SHE. Overall, the characterization
revealed sandy clays, sandy silts and silty sands. The predominant minerals were
quartz, kaolinite, and muscovite along with the presence of biotite and feldspar. The
values of K varied from 10(-5) to 10(-6) m/s; the pH between 4.59 and 6.93
(groundwater) and 7.93 and 8.16 (leachate); the electrical conductivity in the water
varied from 0.032 to 7.113 mS/cm, consistent with the total dissolved solids and
with higher values attributed to the leachate and the well closest to the WDA.
Analysis detected 14 dissolved metals (Al, As, B, Ba, Cd, Co, Cr, Fe, Hg, Mn, Ni,
Pb, Se and Zn) with concentrations above the legal limit. The model illustrated how
the soils spatial distribution and anisotropy influence the flow and transport of
chloride (advective) and chromium (sorption). When considering anisotropic soils,
the Clplume reached the Paraíba do Sul River, 2.5 km away, in 43 years while the
Cr plume only moved 55 m from the source. Although the experimental results were
not clear in determining whether all the metals found necessarily originated from
the contaminant source from the WDA or from natural origins, the simulations of
this model indicated a low environmental impact to the river.
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