Uso de turbidímetros eletrônicos no monitoramento do aporte de sedimentos

Abstract

In this study, was studied the concentration of suspended sediment in the river São Francisco Verdadeiro and Arroio Xaxim river, both of them being tributaries of the Lake of Itaipu and were raised the possible errors sources to this study too. The samples were collected each two months, and analyzed to river São Francisco Verdadeiro the years of 2009, 2010 and 2012, and the year of 2011 to Arroio Xaxim river. Were analyzed the suspended sediment concentration of the surface, comparing the obtained results through a punctual collect, performed by samplers and posteriorly analyzed in laboratory, with results obtained by the use of a electronic tubidimeter, apparatus in which, Itaipu implanted to keep a periodic monitoring of the locations. The results obtained by the automatic meter reading have presented significant in relation to the results obtained with the analysis performed in the laboratory. The averages values found for all the years were very similar, demonstrating that the electronic turbidimeter performs a representative meter reading. Already in the graphics of control of all the years monitored have presented points out of control, above the limits.