Nature can be a great ally for treating wastewater and reclaiming clean water. Under this premise, the LIFE BIODAPH20 project features biological organisms as an environmentally-friendly tertiary treatment for real environment implementation. The Pesaru Ter-Daró Wastewater Treatment Plant (WWTP) located in Quart (Girona) and the Antissa WWTP located on the island of Lesbos, Greece, are the two pilot-test facilities for this technology.
Both sites are in Mediterranean water-stressed areas, posing a major challenge for researchers. The Girona plant, managed by Sorigué since 2010, is particularly important for the environment as the water treated here is used to replenish local aquifers and streams to regenerate aquatic life.
The technology being tested is based on the high pollutant removal capacity of biological organisms such as ‘water fleas’ (Daphnia), microalgae and microbial biofilms. This system is operated via a small solar panel, which does not require chemicals or produce sedimentation sludge. Highly cost-efficient, BIODAPH does not use as much as energy as other conventional treatment technology and can be operated in small areas.
BIODAPH technology uses daphnias, small crustaceans measuring 0.5 to 4mm long who live in aquatic environments. Being filtration fed means they are extremely efficient at removing any microbiological pollutants, microplastics, pathogens, solids and metals found in water.