Iowa State University Uses Algae to Treat Wastewater
While algae might be an unsightly nuisance in home aquariums, the plant can improve wastewater efficiency at a low-cost. Most wastewater is treated with a bacterial process, which produces sludge that can cause disposal issues. Treatment systems using bacterial processes also cost more through facility upgrades.
Iowa State University College of Agriculture and Life Sciences discovered a system that uses conveyor belts with multiple layers of algae on them to treat wastewater. Not only is the system more cost-effective, it is also more sustainable as the algae produced from the process can be used as fertilizer. The Iowa team hopes the system will be implemented in small communities that may not be able to afford costly treatment upgrades to comply with new regulations.