2026-09-222026-09-222025-11-03ARAÚJO, Mônica Couto de. Avaliação e comparação da eficiência de diferentes meios filtrantes na remoção de ferro em águas subterrâneas no município de Altamira-PA. Orientadora Lucy Anne Cardoso Lobão Gutierrez. 2025. 87 f. Dissertação (Mestrado em Tecnologia, Recursos Naturais e Sustentabilidade na Amazônia) - Centro de Ciências Naturais e Tecnologia, Universidade do Estado do Pará, Belém, 2025.https://portaldaposgraduacao.uepa.br/handle/riuepa/282AbertoÁgua - FiltraçãoÁgua - PurificaçãoÁguas subterrâneas - OxidaçãoÁgua potável - TratamentoWater - FiltrationWater - PurificationGroundwater - OxidationDrinking water - TreatmentDissertaçãoEngenharias::Engenharia Sanitária::Tratamento de Águas de Abastecimento e ResiduáriasThe supply of treated water is essential to public health and urban development. This research evaluated the efficiency of different filter media sand, anthracite, and zeolite - in removing color, turbidity, and iron from groundwater through simple filtration and oxidation followed by filtration (the latter applied when simple filtration was not sufficient to remove iron). Three filtration runs (6 to 10 hours) were conducted for each filter medium, except for the combination of oxidation followed by filtration with sand, which had four runs. Samples were collected 30 minutes after the start and every 2 hours. In simple filtration with sand, efficiencies ranged from 82.41% to 85.96% (turbidity), 20.23% to 56.56% (color), and 0% to 92.2% (iron). With prior oxidation, the results improved to 82.71% to 91.25% (turbidity), 18.12% to 92.07% (color), and 0% to 100% (iron). Anthracite performed best, with removals of 89.46% to 95.58% (turbidity), 66.87% to 78.89% (color), and 100% (iron). Zeolite obtained the best results, with removals of 99.53% to 100% (turbidity), 92.65% to 96.56% (color), and 100% (iron). Therefore, it can be concluded that zeolite demonstrated the highest efficiency in removing color, turbidity, and iron, fully complying with the limits of Ordinance No. 888/2021. However, further research is needed to improve treatment methods and ensure the universal right to access to drinking water.PPGTEC - Desenvolvimento sustentável