Removal and Destruction of NDMA and Precursors during Wastewater Treatment

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N-Nitrosodimethylamine (NDMA) is a potent carcinogen that can form during disinfection processes, particularly in wastewater. To address research gaps associated with the understanding of NDMA formation and fate during conventional and advanced wastewater treatment, and to assess the efficacy of potential control strategies, the WateReuse Foundation funded a team of environmental professionals led by Malcolm Pirnie and the University of California at Berkeley and including six utilities to meet the following objectives: (1) Investigate the fate and formation of NDMA and NDMA precursors during conventional and advanced wastewater treatment; (2) select and validate a model to predict NDMA destruction using ultraviolet technology; and (3) conduct a brief occurrence study and laboratory study on NDMA formation in non-potable reuse systems.

Representative results of this study are included here. Detailed results are included in a final project report published by the WateReuse Foundation (http://www.watereuse.org/Foundation).

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