Rediseño de la planta de tratamiento de aguas residuales de la curtiembre Quisapincha, provincia de Tungurahua.

Abstract

The present research had as its object the redesign of the plant of the treatment of waste water from the tannery Quisapincha of the Province of Tungurahua. Proceeded to make the physicochemical characterization of wastewater of input and output of the plant´s treatment of effluent

from

each one of the stages, subsequent to the characterization was determined parameters: Chemical Demand of Oxygen, Biochemistry Demand of Oxygen, sulfates, Chromium Hexavalente. Solids Suspended, Solids Sediments and Total Solids are beyond the permissible limits according to Table 9. Discharge limits to the system of public sewerage of the UTSLME, for its removal one proceeded to realize jar testing using manganese sulfate 5%, ferric chloride 5%, aluminum sulfate 5%, lime 5% and polymer anicónico 1%. Redesign of the plant chose through calculations of engineering, for the wash water be used a ventilation system with a flow of air of 32.137 m 3 / min air, for the stage of liming a sedimenter tank with a volume of 4,07m xxii

3 , surface of 1,14m 2 , with a diameter of 1.20m, radius of 0.60m, retention time of 2.06 h and a stirrer with a 1 HP power. The percentages of efficiency of removal of the parameters outside of standard are COD 94.31% and BOD5 96.83%. The implementation of new processes to improve the quality of the water, so recommended to the tannery Quisapincha implementation of the study in order to discharging waste water that is within the allowable limits in the UTSLME.