Abstract

BUENO-ZABALA, Karen Alejandra; TORRES-LOZADA, Patricia  and  DELGADO-CABRERA, Luis Germán. MONITORING AND MEASUREMENT BY STABILIZATION INDICES OF pH ADJUSTMENT OF TREATED WATER FROM THE CAUCA RIVER. rev.udcaactual.divulg.cient. [online]. 2014, vol.17, n.2, pp.563-575. ISSN 0123-4226.

Low alkalinity levels of the supply sources and the addition of chemical coagulation and disinfection products for water purification, generates the need of the pH adjustment processes as the final treatment stage, in order to avoid phenomena of aggressiveness, corrosion or incrustation in the drinking water distribution system DWDS. This article presents the results of the a application of different stabilization indexes for monitoring and the measurement of the pH adjustment process of the treated water from the Cauca River, which supplies 80% of the city of Cali. The indexes were calculated using historical information as well as data from six characterizations of the treated water, finding that this water tends to be unsaturated and corrosive, which indicates the need to adjust the conditions of the latter process, evaluate other types of alkalizing products and continue promoting the renovation of pipes in the DWDS in the city of Cali.

Keywords : Drinking water; pH adjustment; carbonate system; distribution system - DWDS; water treatment.

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