Evaluación del sistema de recuperación de pelo en el proceso de depilado de la Empresa Tenería Inca

Abstract

In The facilities of “Inca” tannery, located in Tungurahua province, Ambato parish, the evaluation of the hair recovery system on the depilation process of leather was performed. Due to it is a research with combined sampling, they were considered as treatments to the traditional system (T1), compared to the modified system (T2), by using the statistical test t’student to determine statistical differences. The results showed that the evaluation of waste water of liming registered a BDO average of 18055mg/l, of CDO 32130 mg/l and 32.23 S/cm of electrical conductivity, since these are high values, they can be attributed to the process of the traditional system, where immunization of hair is not completely carried out and only a small part of the protein structure of it gets degraded. The electric conductivity demonstrates that in water of treatment T2 there is lower reactivity with 29.55 S/m compared to the results obtained in water from treatment T1 with 32,23 S/m. Generally water with very low electrical conductivity or similar to pure water is required. When using the modified liming system, the value of BDO5 was 12685 mg/l, which represented an increase of29,55% of hair recovery. The modified depilation system was a clean production because of the reduction of pollutant loads in water. The economical evaluation reported the highest benefit/cost in leather from treatment T2 with 1, 24; it means, a profit of 24%.