Avaliação da qualidade das águas subterrâneas dos cemitérios de Brasília e seu entorno

• Autor(a) principal: SABA, Elias Divino
• Data de Publicação: 2011
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/00130000061s6
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/1047
• topic: necrochorume; aquífero freático; cemitérios; águas subterrâneas; conservação; Necroleachate; groundwater aquifer; cemetery; underground water; conservation; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA

This study evaluated the impact of necroleachate in the groundwater aquifer of some cemeteries located in towns around the federal district of Brasilia between 2007 and 2011. Cemeteries in Braslândia, Plano Piloto, Taguatinga, Gama, Sobradinho and Planaltina, located in the federal district, were studied including the Jardim Metropolitano (cemetery and crematorium) in Val Paraíso, Goias. Analysis of physico-chemical and microbiological parameters of underground water samples taken from monitored wells were carried out. The alkalinity, pH value, organic oxygen, conductivity, color, hardness, turbidity, iron content, total quantity of dissolved solid and the chemical and biological oxygen demand of a total of 342 samples were monitored. The result showed that the median values of the physico-chemical parameter obtained are within the range of those permitted by the law. However, it was observed that there was a sharp increase in the median concentration of organic oxygen parameters and the biological and chemical oxygen demand between 2007 and 2011. The results were be evaluated using the RDA (Redundancy analysis) model from the CANOCO software which does a canonical ordination and Redundancy analysis, serving as a chemical tool. The Redundancy analysis allowed for the identification of collection areas with the greatest amount of physico-chemical parameters, thereby allowing for separation and classification of water samples. It also became possible to correlate the physico-chemical and microbiological results and identify areas more prone to contamination, hereby ascertaining the influence of these factors in modifying the potability of Aquifers, however within established standard parameters.