Rediseño de una planta de tratamiento de aguas residuales para la curtiduría Pico de la parroquia la Península del cantón Ambato

Abstract

The objective of this project is the redesign of the wastewater treatment system of the Pico tannery located in the city of Ambato. It started from the identification of the equipment, materials and chemical inputs necessary for the tanning of hides, continuing with a Physicochemical characterization of the waters resulting from the pellet stage where it was identified that the parameters of BOD5, COD, Sulfides, Sulfates, Total Solids and Sedimentables exceed the maximum limits established in Table 8 of Annex I of Book VI of the Unified Text of Secondary Legislation of the Ministry of the Environment and Water. A Physical treatment was applied Coagulation and flocculation chemical by means of the jug test adding Aluminum polychloride (PAC) and anionic polymer. Engineering calculations were developed for the design of certain equipment and structures necessary for the optimization of the WWTP. Finally the characterization of the water subjected to the proposed tests was carried out giving the following results Turbidity 127.7 NTU, BOD5 256.3 mg / l, COD 251.3 mg / l, Sulfides 17.7 mg / l Sulfates 67 mg / l, STD 173.3 mg / l SSD 127.7 mg / l and Oils and fats 32.3 mg / l, showing that the main parameters have a removal percentage greater than 50% which allows compliance with current regulations stipulated by the Ministry of Environment and Water, the entity that regulates in Ecuador.