Innovation and environmental commitment, key aspects of the comprehensive renovation of the Huelva WWTP

The Huelva Wastewater Treatment Plant (WWTP) is undergoing a strategic transformation to improve sustainability and efficiency in water management. The adaptation and improvement project, developed by IDOM and currently in the bidding phase, addresses new regulatory challenges and the need to adapt the infrastructure to the terrain’s particularities. The WWTP will incorporate state-of-the-art technologies to optimize the quality of treated water and promote resource reuse, aligning with the Sustainable Development Goals.

Since its inauguration in 2000, the WWTP has had to adapt to regulatory requirements and the constraints of its location on an old phosphogypsum pond. IDOM’s work consisted of adapting and expanding the treatment process to comply with current legislation and ensure the infrastructure’s stability. The new facility is designed to serve 295,276 people and process 48,538 m³ of wastewater per day. It introduces a mixed biological process (IFAS) and thermal hydrolysis treatment to reuse the sludge for agricultural purposes. Additionally, it improves the headworks pumping to manage rain overflows. The planned investment is 43 million euros.

The project minimizes land occupation and respects the environment, aligning with the operator’s other initiatives that have enhanced local biodiversity. These initiatives include installing insect hotels and species observation systems, which reinforce the plant’s environmental commitment.

At IDOM, we reaffirm our commitment to technical excellence and sustainability for the benefit of communities and the environment.