Optimización de los procesos de tratamiento de lodos residuales procedentes de la planta de tratamiento de aguas de recirculación de la planta de tratamiento de aguas de recirculación de la empresa Productores Químicos Ecuatorianos S.A.

Abstract

The purpose of this research was to determine the physical-chemical and microbiological characteristics of the waste sludge generated at Productores Químicos Ecuatorianos S.A., to subsequently implement mechanisms to help treat the waste sludge, as well as its analysis in the preparation of compost.

With the CRETIB analysis stage completed, the number of heavy metals and pathogens in the sludge was determined according to Mexican standards NOM-052-SEMARNAT-2005 and NOM-004-SEMARNAT-2002; in the next phase, the sludge had to be composted, but it presented dangerous characteristics so this stage could not be completed. Subsequently, in the next phase, the sludge was chemically stabilized with quicklime diluted to 20%, controlling its pH during the contact time to reduce the biological load that was present. In the final part of the project, the sludge was disposed of by a qualified manager.

PQA S.A., not being able to manage the residual sludge for economic reasons, INCINEROX shared information on how they manage residual sludge. In this way it was left as a record and source of information so that in the future PQA S.A. can dispose of the residual sludge in an adequate manner, complying with the stipulations of the national environmental regulations.