Optimización del sistema de tratamiento de aguas residuales de porcelanato Ecuacerámica – Riobamba.

Abstract

The purpose of the technical study was the optimization of the sewage treatment system of Ecuacerámica porcelain plant in order to provide high-quality water for the current treatment system. Through the physical-chemical analysis carried out in polluted and treated water samples, it was possible to identify the irregular parameters according to 097-A Ministry agreement annex 1, book VI, chart 8 of TULSMA regarding to the discharge limits into the public sewage system, it was necessary to determine the water flow by using the floating method as well as the material diameter determination, water particles and sedimentation speed by using drying techniques, filtering and sedimentation; jar tests to determine the appropriate dosage of coagulant and flocculent chemical. The polluted water characterization reflected existing problems related to: pH, suspended solids, and total solids, this due to the sand material diameter which varies between 8,5x10 -4 m - 3,8x10 xiv -5 m at a sedimentation speed of 2,81x10 -2 m/s-2,00x10 -4 m/s. In order to accomplish the parameters it was necessary to use the PAC100dosage at 5% (p/v) 306 L/h and Poly –A at 3% (p/v) 153L/h for

the gravity dosage tanks readjustment as well as their accessories, implementation of an iron mesh in the collecting channel. With the implementation of the current system optimization it was possible to obtain removal percentages of 5,94% pH, 99,85%suspended solids, 84,66%total solids, and 99,74% turbidity; these values reach the established limits increasing the operational performance and improving the water quality for the modification process. It is recommended to verify the polluted water pH average under the 6 to 9 limits.