Generación de subproductos de desinfección en potabilización de aguas bajo diferentes casuísticas. Caso de estudio en la planta del CATABB

La formación de subproductos de desinfección (DBPs) en la potabilización de aguas depende de diferentes factores; entre los que destacan las características del agua a tratar, el tipo de oxidante empleado, así como el proceso de tratamiento. En el presente artículo se muestran los resultados del estudio realizado en una planta a escala real en la que se evaluaron todas estas variables. El trabajo se centró en la formación de los siguientes DBPs: trihalometanos, cloritos, cloratos y bromatos. En el estudio se evidenció la necesidad de implementar la filtración con carbón activo en la potabilización de agua de río (Nervión) en caso de emplear cloro como preoxidante y ser la temperatura elevada. Asimismo, se constató la necesidad de realizar el seguimiento tanto de cloratos como de bromuros en este tipo de agua influente. Además, se comprobó cómo la filtración en carbón activo contribuía a la reducción de los DBPs generados.

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