An algal turf scrubber, also known as an ATS, is a green technology designed to remove excess nutrients and pollutants from water bodies, particularly those affected by eutrophication. It functions as an ecological alternative to traditional methods of water treatment, such as chemical treatment or mechanical filtration.
In its basic form, an algal turf scrubber consists of a shallow, flow-through raceway or channel, often constructed with a concrete or plastic lining. The raceway is populated with various species of microalgae and other aquatic plants, which form a dense layer or "turf" on the bottom surface. Water containing high levels of nutrients, such as nitrogen and phosphorus, is gravity-fed into the raceway, allowing the algae to extract and assimilate these nutrients for growth.
As the water flows through the raceway, the dense algal turf acts as a natural filter, trapping and removing nutrients from the water column. This process, known as assimilative capacity, helps to reduce nutrient levels, prevent algal blooms, and improve water quality. Additionally, the algal turf scrubber provides habitat for a diverse range of microorganisms, contributing to the overall ecological health of the water body.
The harvested algae can also serve as a valuable resource, finding applications in various industries like agriculture, aquaculture, and biofuel production. The algal turf scrubber offers a sustainable and environmentally friendly solution for water treatment, promoting the restoration and preservation of aquatic ecosystems.
