REVISTA DYNA ENERGÍA

Key words:

Coagulación-Floculación, Prueba de Jarras, Clarificación de aguas residuales, sulfato de calcio (yeso), sulfato de aluminio, tratamiento primario, Coagulation-Flocculation, Jar test, Wastewater Clarification, Calcium Sulphate (Gypsum), Aluminum Sulphate, Primary Treatment.

Article type:

ARTICULO DE INVESTIGACION / RESEARCH ARTICLE

Section:

RESEARCH ARTICLES

ABSTRACT:
Water scarcity has created a need to seek alternative solutions, among which are considered to capture rain water in dams. However, different processes deteriorate the quality of this, requiring clarification for potential use in areas such as human consumption and irrigation. In clarification of sewage, traditionally is used aluminum sulfate as a coagulant – flocculant. However, its effect on pH and its cost are two disadvantages tjat create the meed to offer an alternative. In this study, we propose the use of agricultural gypsum, compared to the traditional use of aluminum sulfate (Al2(SO4)3·18H2O) for clarification of two waters of the resorvoir in San Jose SLP (ESJ) AND San Peter Huimilpan in Querétaro (ESPH). Using the jar determining the pH, Total Suspended Solids (TSS) and turbidity, among others, to increasing doses of 0, 0.5, 1.0, 1.5, 2.0 and 2.5 g·l-1. At these dose removal percentages were obtained in 60% achieving turbidity reached a value of 5 Nefelometric Turbidity Unit (NTU) in turbidity and 101 mg·l-1 of TSS for the DSJ. While in the dock of the DSPH, with the same dose on percentage removal achieved was 40% with a reading of 32 NTU. Based on the observed results it is concluded that the application of agricultural gypsum is an important alternative in clarifying the dam waters.

Keywords: Coagulation-Flocculation, Jar test, Wastewater Clarification, Calcium Sulphate (Gypsum), Aluminum Sulphate, Primary Treatment.