WRF Nutrients Research

This chart lists completed reports and ongoing research efforts for WRF's Nutrients research. The timeframe is primarily from the past six years. To search for older reports on nutrients, go to www.werf.org/search and enter "nutrients" or another related topic, or enter a project or report number if you know it.

Completed Projects

Summary (PDF)
Project Number

Release Date

Optimization and Design of a Side-Stream EBPR Process as a Sustainable Approach for Achieving Stable and Efficient Phosphorus Removal

  U1R13   2019
Impact of EBPR on Dewaterability

  NUTR5R14d/4827  2019
Integrated Management of Animal Manure Wastes: Nutrient Recovery, Bio-Fertilizers, Enhanced Biomethane Production and Management Tools

  STAR_N3R14c/4856c  2018
Technologies for Dairy Nutrient Recovery: Evaluation of Low-impact Ammonia Stripping with Bio-Fertilizer Recovery and Support for Technology Decision Making

  STAR_N3R14b/4856b  2018 
Finding and Adding Agricultural BMP Performance Studies to the Agricultural BMP Database

   STAR_N6R14/4857 2018 
Tool for Evaluating Resource Recovery (TERRY) – Nutrient Recovery from Agriculture

  STAR_N5R14T/4898   2018
Stabilization of Main Plant Nitritation/Denitritation Performance

   U4R12  2017
Effluent Organic Nitrogen Produced Within Wastewater Treatment Plants

   U1R11 2017 
Manure Resource Recovery Co-Digestion with Fats, Oil, and Grease

   STAR_N3R14a 2017 
Aerobic Granular Sludge for Biological Nutrient Removal

   NUTR5R14h 2017 

Sustainability Evaluation of Nutrient Removal Technologies Using Comprehensive Life Cycle Assessment

Download  NUTR5R14f  2016
Nutrient Management Volume III: Development of Nutrient Permitting Frameworks

Download NUTR1R06z   2016
Nutrient Speciation and Refractory Compounds in Water Quality Models

  NUTR1R06aa   2016
State of Knowledge and Workshop Report: Intensification of Resource Recovery (IR2) Forum

  TIRR1R15   2016

Impact of Advanced Oxidation Processes on the Composition and Biodegradability of Soluble Organic Nutrients in Wastewater Effluents

 Download NUTR5R14e  2015

Modeling Guidance for Developing Site-Specific Nutrient Goals – Demonstration: Boulder Creek, Colorado 

Download  LINK2T14 2015 
Mainstream Deammonification

Download  INFR6R11   2015

Technologies for Sidestream Nitrogen Removal

Download  NUTR1R06w 2015

BNR Process Monitoring and Control with Online Nitrogen Analyzers for Nitrogen Credit Exchange Program in Connecticut

 Download NUTR1R06y   2015 
Evaluating the Impacts of Cold and Wet Weather Events on Biological Nutrient Removal in Water Resource Recovery Facilities

 Download NUTR1R06s  2015

Application of Membrane Bioreactor Processes for Achieving Low Effluent Nutrient Concentrations

 Download NUTR1R06u   2015

Ammonia Criteria Implementation Stakeholders Meeting

 Download WERF3C14   N/A

Algal Nutrient Removal During Wastewater Treatment

 Download U4R10   2015
Mineralization Kinetics of Soluble Phosphorus and Soluble Organic Nitrogen in Advanced Nutrient Removal Effluents

 Download NUTR1R06p   2015
State of Knowledge of the Use of Sorption Technologies for Nutrient Recovery from Municipal Wastewaters

 Download   NUTR1R06x  2015
Can TMDL Models Reproduce the Nutrient Loading-Hypoxia Relationship?

 Download U4R09  2015
The Bioavailable Phosphorus (BAP) Fraction in Effluent from Advanced Secondary and Tertiary Treatment

 Download  NUTR1R06m 2015 

Evaluation of Performance and Greenhouse Gas Emissions for Plants Achieving Low Phosphorus Effluents

 Download  NUTR1R06v  2015
Solids Role in Tertiary Chemical Phosphorus Removal by Alum

  Download  NUTR1R06t 2014

Phosphorus Fractionation and Removal in Wastewater Treatment: Implications for Minimizing Effluent Phosphorus

 Download NUTR1R06L  2014
Surface Complexation Modelling and Aluminum Mediated Phosphorus - White Paper   NUTR1R06r 

Reference Guide of Proposed Terminology for Nutrient Management   N/A N/A 

Spokane Regional Wastewater Phosphorus Bio-availability Study Final Report



Molecular Based Evaluation of the Active Fraction and Biokinetics of Methylotrophic Denitrification




Greenhouse Nitrogen Emissions from Wastewater Treatment Operation: Phase I Molecular Level Through Whole Reactor Level Characterization

Uptake by Algae of Dissolved Organic Nitrogen from BNR Treatment Plant Effluents


Modeling Guidance for Developing Site-Specific Nutrient Goals

Striking the Balance Between Nutrient Removal in Wastewater and Sustainability


Nutrient Management Volume 2: Removal Technology Performance & Reliability


Protocol to Evaluate Alternative External Carbon Sources for Denitrification at Full-Scale Wastewater Treatment Plants


Nutrient Management: Regulatory Approaches to Protect Water Quality Volume I – Review of Existing Practices Nutrients


Establishing a Research Agenda for Assessing the Bioavailability of Wastewater Treatment Plant Derived Effluent Organic Nitrogen in Treatment Systems and Receiving Waters


Variability of Low Phosphorus Analytical Measurement


Final report plus proceedings of workshop (PDFs of PowerPoint presentations) on Nutrient Removal: How Low Can We Go and What's Stopping Us from Going Lower?


Ongoing Projects

Expected Release
Nutrient Management Volume 3:  Guidance on Permitting Strategies for Achievable and Sustainable N & P Removal


BNR/ENR Process Control Using Online Instrumentation for Carbon Usage

  NUTR1R06y    TBD
Chemical Process Control for Tertiary Phosphorus Removal