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Description: Extended Investigation to Evaluate the Reliability of Ozone-BAC Treatment as a CEC...
Extended Investigation to Evaluate the Reliability of Ozone-BAC Treatment as a CEC Removal Barrier in Potable Reuse Applications
Abstract
Ozonation-Biological Activated Carbon (Ozone-BAC) process reliability in terms of contaminant removal over time is becoming increasingly important to the potable water industry. Field verification of ozone-BAC performance from startup to achieving steady state based on real-time tools is necessary for regulatory approval and develop operational protocols. Consequently, this study involved 19 months of continuous field-scale demonstration of two ozone-BAC systems with different Empty Bed Contact Times (EBCTs) with observations of removal of contaminants of emerging concern (CECs). Findings from this effort filled the gap in the literature regarding transition of granular activated carbon (GAC) to BAC in potable reuse applications. Lowering influent CEC concentrations to heavily loaded BAC resulted in significant desorption resulting in elevated levels of CECs in the BAC effluent which could be a serious concern if downstream polishing steps such as granular activated carbon (GAC) is not available.
Ozonation-Biological Activated Carbon (Ozone-BAC) process reliability in terms of contaminant removal over time is becoming increasingly important to the potable water industry. Field verification of ozone-BAC performance from startup to achieving steady state based on real-time tools is necessary for regulatory approval and develop operational protocols. Consequently, this study involved 19 months of continuous field-scale demonstration of two ozone-BAC systems with different Empty Bed Contact Times (EBCTs) with observations of removal of contaminants of emerging concern (CECs). Findings from this effort filled the gap in the literature regarding transition of granular activated carbon (GAC) to BAC in potable reuse applications. Lowering influent CEC concentrations to heavily loaded BAC resulted in significant desorption resulting in elevated levels of CECs in the BAC effluent which could be a serious concern if downstream polishing steps such as granular activated carbon (GAC) is not available.
SpeakerSundaram, Vijay
Presentation time
08:30:00
08:50:00
Session time
08:30:00
10:10:00
SessionAvoid the Brine: Achieving Potable Reuse Without RO
Session number328
TopicMicroconstituents, Water Reuse and Reclamation, Water Supply and Management
TopicMicroconstituents, Water Reuse and Reclamation, Water Supply and Management
Author(s)
V. SundaramK. PagillaT.C. Guarin CL. LiR. Marfil-VegaS. DasguptaZ. Bukhari
Author(s)V. Sundaram1; K. Pagilla2; T.C. Guarin C2; L. Li2; R. Marfil-Vega3; S. Dasgupta4; Z. Bukhari4;
Author affiliation(s)AECOM Technical Services, Inc.1; University of Nevada 2; Shimadzu Scientific Instruments3; American Water Works Service Company Inc.4
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct 2020
DOI10.2175/193864718825157840
Volume / Issue
Content sourceWEFTEC
Copyright2020
Word count19

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