The use of biological traps for water treatment in Recirculating Aquaculture Systems

Increasing global demand for fish and the depletion of natural fish stocks has stimulated the development of aquaculture all over the world. One of the main restrictions for future growth and sustainability of the aquaculture lies in its waste discharge. The main concern includes dissolved or particulate organics, nitrogen and phosphorus, which may lead to eutrophication of aquatic ecosystems receiving the wastewaters. Therefore, nutrient removal is essential for aquaculture wastewater treatment for protection of the surrounding environment. Recirculating aquaculture systems (RAS), enable fish production in relative isolation from the surrounding environment, and they offer advantages in term…