Evaluation of the physical-chemical treatment of a textile industry effluent through coagulation diagrams
The main environmental problem associated with textile industries is the produced effluent that is difficult to degrade. This effluent is composed of a mixture of dyes, metals, and other pollutants. When it is untreated and improperly disposed of in the environment, its toxicity can degrade ecosyste...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Revista AIDIS de Ingeniería y Ciencias Ambientales: investigación, desarrollo y práctica |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/84609 |
| Acceso en línea: | https://revistas.unam.mx/index.php/aidis/article/view/84609 |
| Access Level: | acceso abierto |
| Palabra clave: | coagulantes efluente têxtil policloreto de alumínio sulfato de alumínio coagulants textile effluent aluminum polychloride aluminum sulfate |
| Sumario: | The main environmental problem associated with textile industries is the produced effluent that is difficult to degrade. This effluent is composed of a mixture of dyes, metals, and other pollutants. When it is untreated and improperly disposed of in the environment, its toxicity can degrade ecosystems. The processes of coagulation, flocculation, and subsequent decantation are widely used in wastewater treatment in industrial textile systems. In this context, the purpose of this work was to compare the removal efficiency of physical-chemical parameters from textile effluent using the coagulants Aluminum Polychloride (PAC) and Aluminum Sulfate, in the coagulation/flocculation/decantation process in different pH variations. The characterization of the effluent was made through analysis of the pH parameters, turbidity, apparent color, total solids and chemical oxygen demand, according to the Standard Methods for Examination of Water and Wastewater protocol. The Jar Test was used for the simulation of the coagulation, flocculation, and decantation stages, and the Mini Tab 19 software for the elaboration of the coagulation diagrams. It was verified that the apparent color and turbidity parameters presented a reduction with the use of PAC, at a dosage of 75 mg/L for pH in the acid and near neutral ranges. Regarding total solids and Chemical Oxygen Demand (COD), it was observed difficulty in removing these parameters with the adopted technology. |
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