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Previous issue date: 2015-02-26 / A contamina??o de solo e de ?guas subterr?neas por vazamento de sistemas de armazenamento subterr?neo de combust?veis em postos de revenda tem sido uma grande preocupa??o nas ?ltimas d?cadas. Os vazamentos de combust?veis no solo nem sempre atingem o aqu?fero para formar fase livre, que ? uma situa??o de car?ter emergencial. Quando o vazamento n?o tem grandes propor??es, forma-se uma fase retida de combust?veis no solo que libera vapores que se expandem e entram em contato com o aqu?fero, contaminando-o, e formando o que se chama de fase dissolvida. Esta fase vapor ? constitu?da por hidrocarbonetos de cadeias curtas e leves, dentre eles tem-se o benzeno que ? muito t?xico. Os hidrocarbonetos leves s?o capazes de se solubilizar em ?gua, tornando-a invi?vel para consumo humano. Esta tese trata do monitoramento trimestral de benzeno, em po?os de um posto de revenda de combust?veis em Natal-RN, que utiliza o sistema de remedia??o do tipo Bombeamento e Tratamento. A concentra??o m?xima inicial da pluma dissolvida de benzeno foi de 3.107,80 ?g.L-1, e durante o tratamento mostrou varia??es de concentra??es acima e abaixo deste valor, sendo essas concentra??es maiores que o estabelecido pela resolu??o n? 420/09 do CONAMA de 5 ?g.L-1. Al?m disso, esta tese prop?s um modelo de ?ndice de Qualidade para ?gua Subterr?nea contaminada por Hidrocarbonetos de Petr?leo (IQASHP), buscando a intera??o de 15 par?metros (BTEX, HPA e TPH total) e o potencial carcinog?nico e toxicol?gico (IARC), de forma a contribuir para a tomada de decis?o e de medidas visando a gest?o da qualidade das ?guas subterr?nea. Quando o IQASHP indicar ?gua subterr?nea de ?tima qualidade para o abastecimento p?blico, a popula??o ter? a garantia de que a toxicidade e carcinogenicidade provocada pelos hidrocarbonetos estar? dentro dos limites estabelecidos pelas legisla??es vigentes, preservando a sa?de da popula??o / The soil and groundwater contamination through the leakage of underground fuel storage systems at resale points has been a major concern in recent decades. Fuel leaks in soil does not always reach the aquifer to form a free phase, which presents itself as an emergency situation. When the leak has not reached large proportions, a parked phase of fuel is formed on the ground that releases vapors that expand and come into
contact with the aquifer, contaminating it, and forming what is called the dissolved
phase. This vapor is composed of short and light hydrocarbon chains; among them we
have benzene which is very toxic. The light hydrocarbons are able to solubilize in
water, making it impractical for human consumption. This thesis deals with the
quarterly monitoring of benzene in wells of a fuel retail station in the city of Natal-RN,
which uses the pumping and treatment remediation type of system. The initial
maximum dissolved benzene plume concentration was 3.107,80 ?g.L-1, and during
treatment, it showed variations of concentrations above and below this value, having
these concentrations higher than the provisions of CONAMA Resolution No. 420/09
of 5 ?g.L-1.In addition, this thesis proposed a Quality Index model for Groundwater
contaminated by petroleum hidrocarbons (WQIGPH), seeking the interaction of 15
parameters (BTEX, TPH and full PAH) and the carcinogenic and toxicological
potential (IARC), so to contribute to decision making and measures aimed for
groundwater quality management.When the WQIGPH indicates groundwater of
excellent quality for public supply, the population will be assured that the toxicity and
carcinogenicity by hydrocarbons will be within the limits set by applicable laws,
preserving the health of the population.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21541 |
| Date | 26 February 2015 |
| Creators | Dantas, A?cia Seleide |
| Contributors | 13893734449, Dantas, Tereza Neuma de Castro, 07286937391, Ramalho, Adriana Margarida Zanbotto, 01082106429, Ara?jo, Danyelle Medeiros de, 00974778427, Souza, Katia Regina, 65561988468, Silva, Djalma Ribeiro da |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM QU?MICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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