Water reuse is a key lever for advancing water sustainability, particularly in contexts of increasing water stress and high regulatory pressure. To ensure safe reuse, it is essential to comply with the microbiological parameters required by RD 1085/2024, which establishes the quality criteria for the different uses of reclaimed water.

In this context, disinfection becomes a critical stage of the treatment process, as it must ensure the effective removal of pathogens, guarantee the microbiological stability of the water, and minimise risks to public health and the environment, all without significantly increasing energy consumption or operational complexity.

There is an opportunity to deploy in-line disinfection systems that do not rely on chlorine, do not generate by-products, and reduce operational complexity as well as the risks associated with handling chemical products. Such solutions would enable improved process sustainability, cost reduction, and simplified operation for internal plant uses.

We are looking for alternative disinfection technologies, with a medium–high TRL (≥5), capable of operating continuously on treated wastewater, without the use of chlorine or the generation of by-products. Solutions must be robust, low-maintenance, and easily integrable into existing WWTP facilities.

ACCIONA has the challenge to find new business models from data generated and, if it is able to implement solutions that collect, store, and analyse the relevant information, will grant the business of ACCIONA Agua with a corporate intelligent service and data analysis that is fast, agile, and far more efficient.

The water treatment plants have many processes from which vast amounts of data are generated and which have to be tended to in order to not only get results from solutions, but anticipate and prevent possible incidents in the treatment processes.

Business model transition in projects to offer services. Content development for ACCIONA’s cloud where the future numerical updates, cognitive intelligence, algorithms and control systems in the cloud.

The plants themselves offer a lot of information that grants knowledge of the medium and the processes. Accessing that data volume and be able to analyse it provides new tools and business lines within the data exploitation itself, and opens real possibilities to the improvement and optimization of designs.