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Poluição pontual num curso de água de primeira ordem no Uganda
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ISBN10: 6200699909
ISBN13: 9786200699909
Publisher: Edicoes Nosso Conhecimento
Published: Oct 4 2025
Pages: 96
Weight: 0.31
Height: 0.23 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786200699909
Publisher: Edicoes Nosso Conhecimento
Published: Oct 4 2025
Pages: 96
Weight: 0.31
Height: 0.23 Width: 6.00 Depth: 9.00
Language: Portuguese
Numa área periurbana 45 km a leste de Kampala, a cidade de Lugazi, com 40 000 habitantes, está situada à beira da autoestrada Jinja-Kampala e enfrenta os perigos da poluição. Para explorar esses perigos, foi realizado um estudo para avaliar o efeito dos efluentes do matadouro na qualidade da água do rio no qual eles são despejados. Foram realizadas avaliações de campo e laboratoriais para determinar a concentração de nutrientes e parâmetros físico-químicos a montante e a jusante em relação ao ponto de descarga dos efluentes. Os resultados revelaram que o matadouro não estava adequadamente localizado, uma vez que se encontra próximo de habitações humanas. As águas cinzentas das habitações humanas juntavam-se ao canal de descarga dos efluentes do matadouro. Os efluentes são descarregados no rio sem pré-tratamento. A concentração de TP, SRP, NH4-N, NO3-N e NO2-N e BOD, exceto COD, nos efluentes estava dentro dos Padrões Ambientais Nacionais para Descarga de Efluentes na Água e na Terra. Os valores mais elevados de COD nos efluentes são atribuídos às águas cinzentas. Embora os resultados sugiram que a qualidade da água não está adversamente comprometida, é necessário o pré-tratamento dos resíduos para evitar qualquer poluição provável.
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