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Liquid streams (“reject water” or “sidestream”) generated by the dewatering of digested solids generally contain high levels of ammonia and phosphorus. These liquids can be treated in separate or sidestream processes rather than being directly returned to the mainstream treatment process. Sidestream treatment processes can reduce overall energy and chemical costs and improve treatment reliability for biological nutrient removal facilities. Sidestream treatment processes can also be used for nutrient recovery and reuse.
This document is a compilation of a broad range of biological and physiochemical treatment processes specifically for nitrogen removal and recovery from municipal sidestreams and ammonia-rich industrial wastewaters. The benefits of these technologies are described along with design approaches and full-scale plant experiences. Reuse of recovered ammonia in the form of aqueous ammonia and ammonium salts for industrial and agricultural applications is also discussed. Future research needs in sidestream nitrogen removal and recovery are identified and summarized.
Research Roadmap: Towards an Economic Decision Methodology for Remaining Asset Life
This report is an output of the fourth research track (Track 4) of WERF’s strategic asset management research program ‘Asset Management Communication and Implementation’ (RFPP #06-SAM-1 CO). Track...
Remaining Asset Life: A State of the Art Review
This report is an output of the fourth research track (Track 4) of WERF’s strategic asset management research program ‘Asset Management Communication and Implementation’ (SAM1R06). Track 4...
Strategic Risk Communications Process for Biosolids Land Application Programs
The long-term viability and sustainability of biosolids land application is dependent on continuously earning stakeholder confidence, trust and support. This requires ongoing and effective...
Dissolved Organic Nitrogen Characterization and Bioavailability in Wastewater Effluents
This project addresses the dissolved organic nitrogen (DON) content in the effluents of different wastewater treatment plants (WWTPs). In this report, information is presented on the occurrence...
Evaluating the Impacts of Cold and Wet Weather Events on Biological Nutrient Removal in Water Resource Recovery Facilities Nutrients
Maintaining effective biological nutrient removal (BNR) capability during adverse weather events can be challenging for water resource recovery facilities (WRRF). Mitigation of the impact of these...
Research Digest: Toxicity Screening of Influents Using Bioluminescent Reporter Technology
Influent toxicity can be a critical problem for publicly owned treatment works that use the activated sludge process as part of their treatment regime. In this project, the researchers developed...
Producing Class A Biosolids With Low-Cost, Low-Technology Treatment Processes
Class A biosolids can be produced using low-cost, low-technology biosolids treatment processes including lagoon storage, air drying, and cake storage. This project reviewed the available...
Barriers to Biogas Use for Renewable Energy
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WERF and NYSERDA, in conjunction with Brown and Caldwell, Black & Veatch, Hemenway Inc., and NEBRA, are leading a research project to determine...
Assessment of Technologies for Screening, Floatable Control, and Screenings Handling
Screening and floatable controls are used at wastewater treatment, sanitary sewer overflow (SSO) and combined sewer overflow (CSO) locations. Screening is a preliminary treatment step and...