Which type of facility typically implements nutrient recovery practices?

Wastewater treatment plants are specifically designed to treat sewage and wastewater, making them the primary facilities that implement nutrient recovery practices. Nutrient recovery refers to the process of extracting valuable resources—such as nitrogen and phosphorus—from wastewater. These nutrients can be repurposed for agricultural use, helping to create a more sustainable ecosystem by converting waste into usable products.

In wastewater treatment plants, various processes such as biological treatment, anaerobic digestion, and advanced filtration systems are used to efficiently recover these nutrients while also ensuring that the resulting effluent meets environmental standards. The focus on nutrient recovery in these facilities supports both waste management and environmental conservation, thereby addressing the challenges of nutrient pollution in water bodies.

In contrast, landfills are primarily focused on waste disposal, factory assembly lines are oriented towards manufacturing processes, and residential housing complexes do not typically engage in nutrient recovery, as their sewage would be treated at nearby wastewater treatment plants. Thus, the unique role of wastewater treatment plants in nutrient recovery distinguishes them from the other options provided.