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Biodestruction of blended residual oxidant streams
Author(s) -
Brown Jess,
Wheadon Rick,
Hansen Edwin
Publication year - 2010
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2010.tb10208.x
Subject(s) - effluent , wastewater , bioreactor , environmental science , arsenic , electrodialysis , pulp and paper industry , streams , waste management , chemistry , environmental engineering , computer science , engineering , membrane , computer network , biochemistry , organic chemistry
After bench‐ and pilot‐scale studies demonstrated the effectiveness of a novel biological treatment process for removing oxidants from concentrate waste streams, an electrodialysis reversal pilot plant was used to remove perchlorate, arsenic, and total dissolved solids from groundwater. The resulting concentrate stream was blended with scalped municipal wastewater and treated in a fixed‐bed (FXB) bioreactor through a process called BIOBROx™. The data showed that an empty bed contact time of 10 min and a 0.6 blend ratio of wastewater flow to total flow sustained perchlorate removal to below the methodreporting limit (4 gg/L) in the FXB bioreactor. Testing also showed that the system was robust with respect to process upsets and temperature variations. Ongoing full‐scale testing is designed to optimize the process so that BIOBROx effluent can be used directly for reuse applications after disinfection.