Diseño de una planta de tratamiento de aguas residuales para la empresa Nuvinat S.A. ubicada en el Cantón Riobamba Parroquia San Juan, año 2014

Abstract

A wasting water treatment plant was designed for Nuvinat S.A. which is in the rural parish of San Juan, city of Riobamba, province of Chimborazo. Caudal measure was performed applying analysis methodology for seven days, 12 hours a day, with intervals of five minutes between each one by using volumetric methods, obtaining a caudal of design 5.2 L/min. Sampling for 3 days using a complex method was make for physical, chemical, and microbiological characterization . Results of lab analysis show values of: conductivity 1034 µSiem s/cm, DQO 605mg/L, surfactants 16.2 mg/L, fecal coliforms 900 UFC/ 1OOmL, verifying that these are outside the permissible limits according to Unified Text of Secondary Legislation of Ministry of Environment (TULSMA). The proposal design has -• re-treatment (grid), primary treatment (oíl and fat trap), secondary treatment (septic tank and anaerobic filter of upward flow) reaching an average total efficiency of 68.05% The designed wasting water treatment plant is efficient for decreasing concentration of contaminants that are in effluent water discharge, fulfilling with the maximum permissible limits established by current norm s (TULSMA), contributing to better social and environmental development in the rural parish of San Juan. It is recommended the implementation of a wasting water treatment plant was designed for Nuvinat S.A. company.