Project #4819

Understanding the Impacts of Low-Energy and Low-Carbon Nitrogen Removal Technologies on Bio-P and Nutrient Recovery Processes

$554,533
In Progress
Principal Investigator
George
Wells
Research Manager
Mr. Ashwin Dhanasekar
Contractor
Northwestern University
Nutrients
Resource Recovery
Nitrogen
Phosphorus

Abstract

The purpose of this research was to develop a multi-pronged approach to facilitate low-energy nitrogen (N) and phosphorus (P) removal and recovery from wastewater using biological P removal (bio-P). The research increases the understanding of fundamental ecology, kinetics, and stoichiometry of denitrifying biological phosphorus uptake, and provides guidance on configurations at lab-, pilot-, and full-scale that select for high denitrifying polyphosphate accumulating organism activity and robust bio-P coupled to energy- or resource-efficient N removal. Additionally, it provides a roadmap for extractive P recovery from water resource recovery facilities practicing a combination of bio-P and chemical P precipitation. Published in 2020.

 Originally funded as WERF project NTRY13R16 .