Rediseño de la Planta de Tratamiento de Agua Potable Santa Rosa de la Parroquia Santa Rosa de la Ciudad de Ambato

Abstract

The redesign of the "SANTA ROSA" drinking water treatment plant in the parish of the same name in the city of Ambato, sponsored by EMAPA, is aimed at implementing new structures in the treatment system to improve the quality of the water supply distributed to the population, which has color and turbidity problems. Portable color and turbidity measuring equipment was used to analyze raw water and treated water in situ. Physical-chemical and microbiological analyses were carried out using methods and techniques based on Standard Methods in the quality control laboratory of the "Casigana" plant, as well as treatability tests in a pilot plant that simulates rapid mixing, flocculation and sedimentation operations. Preliminary analyses to determine the current status of the plant showed that 97% of the water turbidity was removed, with an average output value of 1.03NTU; for color, the removal percentage was 73.8%, and the output water values averaged 10.5 units; 92% of the coliform organisms were removed. These results indicate that the outlet water quality does not meet the requirements of the established regulations. The results of this research process carried out in the water quality control laboratory of the "Casigana" treatment plant during five weeks under different climatic conditions made it possible to establish that the redesign will consist of: a fast mixing channel with inlet velocity v1 = 2.66m/s; length of the channel Lj = 0.708m; mixing time tm = 0.590s. Hydraulic flocculation channel with a total distance traveled L = 468m and a volume of water to be mixed every 30min = 16,938m3. A high rate settler with a surface load CS = 101,628m/day and a retention time in the tank tRT = 35,423min. And finally the implementation of 2