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Publication
Avaliação da contaminação de solos: Investigação, análise e gestão
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 12.35 MB | Adobe PDF |
Abstract(s)
A contaminação dos solos consiste num problema ambiental de elevada relevância, com
implicações significativas na saúde pública, na qualidade dos ecossistemas e no uso sustentável do
território. Em Portugal, já foram identificados mais de 180 locais com necessidade de intervenção,
reforçando a importância dos planos de remediação de solos e das metodologias que suportam a
sua avaliação e gestão. O trabalho apresentado tem como objetivo avaliar o estado de
contaminação dos solos presentes num terreno localizado no Sobrado, município de Valongo. Para
tal, este recorre à aplicação de um conjunto de metodologias faseadas, que passam pela recolha
de informação, execução de sondagens, recolha de amostras e realização de determinações
analíticas. É também realizada uma revisão do enquadramento legal existente, bem como dos
principais grupos de contaminantes e possíveis danos. Através dos resultados obtidos, foi possível
identificar os elementos críticos presentes no solo, avaliar a sua distribuição espacial, seu nível de
perigosidade e calcular os volumes de resíduos a remover. De igual modo, foram ainda propostas
estratégias de gestão para os solos e restantes resíduos, em conformidade com a legislação
nacional e as orientações fornecidas pela Agência Portuguesa do Ambiente (APA). Adicionalmente,
foi explorada a utilização do método de krigagem enquanto método geoestatístico alternativo,
articulando-o de seguida com os polígonos de Thiessen anteriormente utilizados, de modo a
aumentar o rigor da avaliação e promover uma gestão mais eficiente dos solos contaminados.
Soil contamination represents a highly significant environmental issue, with profound implications for public health, ecosystem integrity, and the sustainable use of land. In Portugal, over 180 sites have already been identified as requiring intervention, underscoring the importance of soil remediation plans and the methodologies that support their assessment and management. The present work aims to evaluate the contamination status of soils at a site located in Sobrado, Valongo municipality. A phased methodological approach was implemented, encompassing information gathering, borehole drilling, sample collection, and analytical determinations. Furthermore, a review of the existing legal framework, the main contaminant groups, and their potential impacts was undertaken. The results enabled the identification of critical elements present in the soil, the assessment of their spatial distribution and hazard level, and the estimation of waste volumes requiring removal. Management strategies for soils and associated wastes were also proposed in accordance with national legislation and the guidelines established by the Portuguese Environment Agency (APA). In addition, the application of kriging as an alternative geostatistical method was explored and subsequently integrated with previously employed Thiessen polygons, aiming to enhance the accuracy of the assessment and promote more efficient management of contaminated soils.
Soil contamination represents a highly significant environmental issue, with profound implications for public health, ecosystem integrity, and the sustainable use of land. In Portugal, over 180 sites have already been identified as requiring intervention, underscoring the importance of soil remediation plans and the methodologies that support their assessment and management. The present work aims to evaluate the contamination status of soils at a site located in Sobrado, Valongo municipality. A phased methodological approach was implemented, encompassing information gathering, borehole drilling, sample collection, and analytical determinations. Furthermore, a review of the existing legal framework, the main contaminant groups, and their potential impacts was undertaken. The results enabled the identification of critical elements present in the soil, the assessment of their spatial distribution and hazard level, and the estimation of waste volumes requiring removal. Management strategies for soils and associated wastes were also proposed in accordance with national legislation and the guidelines established by the Portuguese Environment Agency (APA). In addition, the application of kriging as an alternative geostatistical method was explored and subsequently integrated with previously employed Thiessen polygons, aiming to enhance the accuracy of the assessment and promote more efficient management of contaminated soils.
Description
Keywords
soil contamination contamination assessment sampling interpolation methods waste management Contaminação em solos Avaliação da contaminação Amostragem Métodos de interpolação Gestão de resíduos