Aplicación del método de mínimos cuadrados discretos a mediciones de demanda de oxígeno químico en efluentes de curtembres
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El proceso de curtido es el proceso de tratamiento y transformación de la piel animal en cuero, donde dicho proceso reside especialmente en la adición a las pieles de una serie de productos curtientes como las sales de cromo, entre otros. En este sentido, se puede decir que, en la presente investigación, se estudió el comportamiento fisicoquímico y microbiológico del reactor durante el proceso del cuero en las industrias, lo que ha ido incrementando esta actividad en el comportamiento de las aguas residuales producidas por los productores cuero, teniendo en cuenta que necesitan sistemas más eficientes para el tratamiento de los efluentes generados en este sector. Es así como para el desarrollo de esta investigación se manejó un reactor por carga con un volumen útil de 2 litros que trabajó en circunstancias aeróbicas con ciclos de 24 horas. Asimismo, para el desarrollo de esta investigación se logró aumentar progresivamente la concentración del efluente de la curtiduría, teniendo en cuenta el DQO y el recuento de microorganismos heterótrofos, que fueron las principales variables estudiadas durante la investigación. Finalmente, las remociones de DQO biodegradables logradas al final del proceso de aclimatación fueron del 57,9% para DQOt y del 76,8% para DQOs, presentando además cantidades poco significativas de bacterias heterótrofas en el efluente
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