This research uses purple bacteria to treat dairy wastewater, removing nitrogen and phosphorus while producing nutrient-rich biomass. The process reduces pollution and transforms waste into potential biofertilizer, offering a sustainable alternative to chemical fertilizers and a circular solution for dairy farming and agriculture.

This research develops a membrane-based wastewater treatment system that selectively supports nitrogen-removing bacteria without energy-intensive aeration or added organic matter. By enabling efficient biological nitrogen removal, the approach reduces greenhouse gas emissions, lowers costs, and makes advanced wastewater treatment more accessible—protecting aquatic ecosystems and water quality.