Diseño del sistema de tratamiento de agua residual en la Planta de Lácteos Lagtogal Cia. Ltda.

Abstract

In this research work we designed the wastewater treatment system for the Lactogal Cía. Ltda. dairy plant, located in the Parish of Alóag, Cantón Mejía, Province of Pichincha. For which we based ourselves on the experimental method, which allowed us to carry out analyses before and after treatment and tests to find the optimum dose of chemical inputs for this effluent. According to the physical-chemical and microbiological characterizations, we determined the need to design a system to reduce turbidity, BOD, COD and solids in this fluid. We started by measuring the average flow that this industry discharges, which is 0.32 L/s, which will pass through a channel with a system of grids, and directed to a homogenizer tank with a capacity of 6 m3, then it will pass to an aeration tank to reduce organic matter, It then goes to a settling tank with a capacity of 5 m3 , where a coagulation-flocculation process takes place, reducing turbidity from 836 NTU to 65NTU, BOD from 4260 mg/L to 245 mg/L, and COD from 7333 mg/L to 790 mg/L. Finally, the clarified water will pass through an upflow filter. These steps reduced the turbidity, BOD, COD, and solids values, making the water suitable for discharge directly into the sewage system. We recommend that the Lactogal dairy industry implement the wastewater treatment system to contribute to the conservation of the sector's natural resources.