%0 Journal Article
%T Caracteriza  o qu赤mica e mineral車gica da incrusta  o em rede de ferro fundido e potencial de recupera  o da capacidade hidr芍ulica Chemical and mineralogical incrustation characterization and potential of hydraulic performance recovery
%A Rodrigo Braga Moruzzi
%A Fabiano Tomazini da Conceiˋˋo
%A Guillermo Rafael Beltran Navarro
%A Antenor Zanardo
%J Engenharia Sanitaria e Ambiental
%D 2012
%I Brazilian Association of Sanitary and Environmental Engineering
%X O objetivo deste trabalho foi caracterizar qu赤mica e mineralogicamente os dep車sitos em rede de ferro fundido e avaliado o potencial de recupera  o da capacidade hidr芍ulica em tubula  o altamente comprometida pela incrusta  o. Para tal, foram feitas medidas do coeficiente de resist那ncia (pitometria em trecho isolado de 71 m), an芍lises qu赤mica ( P-ES e ICP-MS), mineral車gicas (lamina  o, difra  o de raios-X e microscopia eletr nica), dureza (escala de Mohs) e simula  es em setor hipot谷tico com cen芍rios distintos (de C1 a C4) de troca e substitui  o da rede. Os resultados indicaram que a rede altamente comprometida tem potencial limitado de recupera  o (de 3,9 a 14,0 m0,367.s-1). As caracteriza  es qu赤mica e mineral車gica indicaram Magnetita e Goethita, com dureza da ordem de 6 na escala Mohs. As simula  es demonstraram pot那ncias relativas (raz es Ci/C1) da ordem de 86,00, 1,00 e 0,02% em rela  o ao cen芍rio atual. The purpose of this work was to characterize chemical and mineralogical the water supply networks and to assess the hydraulic recovery on high-degraded pipe. Thus, the resistance (by pitometric essays), chemical analyses (ICP-MS and ICP-ES), mineralogical analysis (petrographic thin sections, X-ray difractometry and scanning electronic microscopy), hardness (Mohs scale) and simulations for pipe's change and rehabilitations scenarios were investigated (from Scenario 1 to 4). The results showed that the high-degraded pipe had a limited recovery (from 3,9 to 14,0 m0,367.s-1). The deposits were formed by oxide and hydroxide of iron (magnetite and goethite), which are materials of high hardness (6 on Mohs scale). The simulations indicated the required power ratio (Ci/C1) around 86.00, 1.00 and 0.02% in relation to present scenario.
%K rede de abastecimento de 芍gua
%K dep車sitos
%K incrusta  es
%K perda de carga
%K water supply network
%K deposits
%K inlay
%K head-loss
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-41522012000300007