Type of project: Main

Duration: 8 months

The HALURA IV project continues with the exhaustive study of the formation of haloacetic acids (HAA) during the potabilization process, with special emphasis on the water of the Nervión river. This river is characterized by a higher concentration and variation of organic matter, especially during the summer season, which presents unique challenges for water treatment.

The main objectives of the project include analyzing the generation of HAA at different stages of treatment, evaluating the impact of different pre-oxidants such as chlorine, chlorine dioxide and ozone, and exploring HAA removal methods. In addition, the influence of factors such as elevated temperature and the presence of bromides will be studied, the correlation between HAA formation and natural water precursors (DOC, ABS254, SUVA) will be investigated, and the generation of HAA will be compared with that of trihalomethanes (THM).

To enrich the research, bromide doping trials will be conducted. The 8-month project will include an analytical campaign designed to capture variations in HAA concentration at key treatment points. The adsorption-desorption processes on activated carbon and the generation of HAA at intermediate stages will be examined in detail.

This expanded research will provide CABB with a deeper understanding of HAA formation under challenging conditions, helping to optimize treatment processes, improve drinking water quality and ensure compliance with safety regulations in a variety of scenarios.