Aplication of geoquimical modelling in hydraulic engineering [Aplicacion de la modelacion geoquimica a la ingenieria hidraulica]
Por:
Marin Luis E., Santa Anna Elizabeth Prieto, Oliman Guadalupe Velazquez
Publicada:
1 ene 1994
Resumen:
A description is given of a rapid and precise technique to determine the corrosion or scale formation index using a geochemical model which considers the physical-chemical characteristics of the water flowing through the pipe. The saturation index of calcium carbonate is a good indicator of metal corrosion by water or obstruction by the precipitation of calcium carbonate within the pipe. The calcium carbonate saturation index was determined in 16 well water samples, taken in 1980 by the Instituto Nacional de Estadistica, Geografia e Informatica [Census Institute] in the Puebla Valley, using the WATEQ geochemical model (Truesdell and Jones, 1974). Trials using the model indicate that 5 samples were supersaturated (CaCO3 may precipitate in the pipe) and 11 samples were subsaturated (may result in corrosion). A good correlation was found between total dissolved solids and electrical conductivity in ground water in the Puebla Valley. This information may be useful in the monitoring of water quality in the Valley at a fraction of the cost of the usual chemical analysis.
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