Análisis de variables físico-químicas en el proceso de remoción de coliformes en el sistema de lagunas de oxidación, Salguero, Valledupar (Colombia)

Abstract

The objective of this research study was to examine the relationship between physico-chemical variables and coliform removal percentage from the oxidation lagoon system in the city of Valledupar (Colombia). Twelve samples of wastewater, raw water, and treated water were collected during dry and rainy seasons from the Salguero wastewater treatment plant in Valledupar. Physico-chemical variables were measured according to the "Standard Methods for Examination of Water and Wastewater." Coliform group determination was performed by the membrane filtration technique and the chromogenic substrate Merck method. The results show weak relationships between physical variables and the coliform group. It is concluded that the treatment system does not comply with national and international guidelines for the coliform group. This has a negative impact on the Cesar River and constitutes a public health problem for surrounding communities.