2015
DOI: 10.1590/s1413-41522015020040129909
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Avaliação técnico-econômica da tecnologia de tratamento de água de dupla filtração

Abstract: RESUMOO artigo avaliou a tecnologia de dupla filtração visando definir os critérios de seleção. A literatura é unanime em afirmar que na dupla filtração é necessário realizar o anteprojeto dos dois tipos de instalações (com filtro ascendente em pedregulho -FAP e com filtro ascendente em areia grossa -FAAG) e, em seguida, fazer um estudo técnico-econômico para determinar a melhor alternativa a ser

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“…The proposition has also included the possibility of improving the decanted water characteristics through the addition of polyelectrolytes or polymers as coagulation auxiliaries (Figure 4), according to Sabogal-Paz et al (2015), the association implies the reduction of the decantation time due to the size of the resulting flake, which is bulkier in comparison with those obtained by the use of the metallic coagulant. Guilherme (2009) affirms that, in general, by the use of the polyelectrolyte, the sludge volume is reduced to around 50%, allowing, in many situations, For instance, in 2009, a significant portion of Alvinópolis population was subjected to precarious conditions, such as property loss and waterborne diseases, due to the phenomenon.…”
Section: Methodsmentioning
confidence: 99%
“…The proposition has also included the possibility of improving the decanted water characteristics through the addition of polyelectrolytes or polymers as coagulation auxiliaries (Figure 4), according to Sabogal-Paz et al (2015), the association implies the reduction of the decantation time due to the size of the resulting flake, which is bulkier in comparison with those obtained by the use of the metallic coagulant. Guilherme (2009) affirms that, in general, by the use of the polyelectrolyte, the sludge volume is reduced to around 50%, allowing, in many situations, For instance, in 2009, a significant portion of Alvinópolis population was subjected to precarious conditions, such as property loss and waterborne diseases, due to the phenomenon.…”
Section: Methodsmentioning
confidence: 99%