Revista Producción + Limpia
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Browsing Revista Producción + Limpia by Author "Aguirre Ramírez, Néstor Jaime"
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Item Análisis de calidad de agua de la quebrada La Ayurá con base en variables fisicoquímicas y macroinvertebrados acuáticos(Área Metropolitana del Valle de Aburrá, 2009) Valverde Legarda, Nubia Lucía; Caicedo Quintero, Orlando; Aguirre Ramírez, Néstor JaimeIntroduction. The analysis of physical and chemical variables and the use of macro invertebrates as witnesses of the quality of water are complementary methods in the evaluation processes for environmental conditions. The reason for the use of these micro organisms as indicators is based mainly on their life cycles, which are longer than those of other aquatic inferior organisms. Besides, macro invertebrates present lower mobility levels. The idea is, by the use of the physical and chemical variables, the aquatic macro invertebrates and quality indexes, to prevent the contamination of water, with cleaner production strategies that reduce environmental negative impacts. Objective. To determine the quality of water from the Ayurá creek, by the analysis of physical and chemical variables and the community of aquatic macro invertebrates. Materials ad methods. In November 2007 and January and February 2008, samples were taken from three stations located in the high, medium and low parts of the creek. In each station the physical/chemical variables were measured, and samples of macro invertebrates were taken with the Surber net. Results. A total number of 1655 organisms, distributed in 59 taxa, were counted. From them, the most abundant were Leptonema, Haplotaxida and Baetodes. The space behavior of electric conductivity, turbidity, total alkalinity and solids dissolved keeps a close relation with the ecophysiological characteristics of aquatic macro invertebrates. Conclusion. In station 1there was a good quality of the water and in stations 2 and 3 that quality was considered between good and medium. The highest deterioration took place in station 3, as a consequence of the pouring of external waste water into the creek and the presence of solid wastes near the sampling stations.Item Monitoreo del sistema de lagunas de estabilización del municipio de Santa Fé de Antioquia, Colombia(Corporación Universitaria Lasallista, 2012) Correa Restrepo, Gloria; Cuervo Fuentes, Hernán; Mejía Ruíz, Roberto; Aguirre Ramírez, Néstor JaimeIntroduction. This Research work introduces the results obtained in the monitoring of the stabilization ponds system used to treat domestic waste waters in Santa Fe de Antioquia, a town located in the West of Antioquia. The system has a treatment train which includes an anaerobic pond that works coordinated with another two that are facultative, operating in parallel. This project started because of the problem caused by stinking odors in the communities located near the waste water treatment plant of Santa Fe de Antioquia. Objective. Evaluating and monitoring the behavior of the stabilization ponds system used to treat domestic waste water in Santa Fe de Antioquia. Methodology. Five samplings were performed between November 2006 and December 2007. 14 sampling stations were established, comprehending the influent and the effluent of each pond, the center of each pond, three different depths and the total effluent of the system. The following variables were determined: Environment and water temperature, dissolved oxygen, redox potential, pH, COD, DBO5, total solids, dissolved solids, suspended solids, settleable solids, volatile suspended solids, “a” chlorophyll and flow. With the time-space analysis of the variables, the best performance conditions of this treatment system were related. Results. In the anaerobic pond a media temperature of 26,7 °C was obtained and in the facultative ponds the temperature was approximately 28,0 °C. As for the dissolved oxygen, average data of 17,4 y 24,6 mg/L were reported on the surfaces of the facultative ponds, and these decreased with respect to depth and time. The media of the redox potential in the anaerobic pond was -235 mV, and for the facultative ponds it varied between 24 and 69 mV. The media of the pH in the facultative ponds was 7,5 in their centers, varying in time and space, while that of the anaerobic pond was 7,0 with a little variation due to its depth. In general, in both facultative ponds, during the daytime, there was a chemical stratification. Important values were measured for the “a” chlorophyll production in the facultative ponds, with media values up to 2.275 ug/L. When the efficiency of the system was measured, a load removal in soluble DBO5 of 92% was obtained, considering a variation for anaerobic pond between 50% and 70% and between 59% and 62% for the facultative ones.Conclusions. According to this research, it can be clearly appreciated how the control of the physical-chemical standards and the flows that enter in the pond system is essential for an adequate operation of the plant. On the other hand, the anaerobic pond is the unit that produces distress in the community due to the generation of stinking odors, so its removal efficiency is a factor that must be highly regarded in the treatment plant.