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APPLICATION OF THE DISCRETE LEAST SQUARES METHOD TO MEASUREMENTS OF CHEMICAL OXYGEN DEMAND IN TANNERY EFFLUENTS

Authors: Inca Balseca, Cristian Luis; Barrera Rea, María Gabriela; Coronel Maji, Franklin Marcelo; Magallanes Tomalá, Jorge Leonardo;

APPLICATION OF THE DISCRETE LEAST SQUARES METHOD TO MEASUREMENTS OF CHEMICAL OXYGEN DEMAND IN TANNERY EFFLUENTS

Abstract

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

The tanning process is the process of treatment and transformation of animal skin into leather, where said process resides especially in the addition to the skins of a series of tanning products such as chrome salts, among others. In this sense, it can be said that, in the present investigation, the physicochemical and microbiological behavior of the reactor was studied during the leather process in the industries, which has been increasing this activity in the behavior of the wastewater produced by the producers. leather, taking into account that they need more efficient systems for the treatment of effluents generated in this sector. This is how, for the development of this research, a reactor was managed per load with a useful volume of 2 liters that worked in aerobic circumstances with 24-hour cycles. Likewise, for the development of this investigation, it was possible to progressively increase the concentration of the effluent from the tannery, taking into account the DQO and the count of heterotrophic microorganisms, which were the main variables studied during the investigation. Finally, biodegradable DQO removals achieved at the end of the acclimatization process were 57.9% for DQOt and 76.8% for DQOs, also presenting little significant amount of heterotrophic bacteria in the effluent

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Keywords

acclimatization, tannery effluent, Reactor, efluente de curtiembre, DQO, aclimatación

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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
hybrid