Diseño de un Sistema de Tratamiento de Agua Residual del Proceso de Pelambre para su Reutilización, Curtiembre Pieles Puma

Abstract

The objective of the research is the design of a wastewater treatment system of the liming process for its reuse in the leather tannery "Puma", in the city of Ambato, Province of Tungurahua. Physical-chemical studies were carried out for the diagnosis of the wastewater from the liming process, determining that this water is rich in sulfides (1427 mg/L) and calcium hydroxide, suitable for reuse in another batch of liming, it was determined that the concentration of organic matter and sulfur reached critical levels of toxicity. A sequential treatment system was selected: filtration, decantation and reuse of the effluent, by means of primary unitary operations, it was achieved that the fluents have characteristics for their recycling, reaching the necessary concentrations for a new batch of liming. The design of the system was based on the discharge flow rate of the fulon. The sizing of the system consists of: a stainless steel grid a concrete tank for the collection of effluent with a capacity of 7.0 cubic meters a decanter type cylinder - conical with a capacity of 7.0 cubic meters. A concrete tank for the collection of the treated effluent coming from the decanter with the same characteristics of the previous tank. Pumping equipment for the transportation of the effluent from tank 1 to the decanter, and from tank 2, to the fulon capacity. With the design of the treatment system for the reuse of water from the pelambre, a reduction of environmental pollution and economic savings for the company is achieved. The construction of the system is recommended to take advantage of the high concentration of sulfur, lime and water, which are reusable.