Typical urban sewage contains N of 75-125 mg/L, while P ranges between 20-40 mg/L . Earlier nutrient recovery studies show that between 80% and 90% of N and P is recoverable from WW using different treatment methods namely, chemical precipitation, microbial fuel cells, ion-exchange, and microalgae production . Several challenges exist in transitioning these technologies to field-level including robustness, material and energy efficiency, economics, design and optimization, and sustainability analysis.