Abstract
Potable water reuse through the use of treated wastewater effluents has been practiced for more than 50 years. The majority of projects worldwide are characterized as indirect potable water reuse, where an environmental buffer (groundwater aquifer or surface water reservoir) provided retention, additional attenuation, and blending prior to use as drinking water. In order to protect public health, these projects have utilized different treatment processes and combinations to establish multiple barriers against microbial and chemical contaminants. Due to the advancements in environmental analytical chemistry and the recognition of contaminants of emerging concern occurring in reclaimed water that might exhibit adverse health effects, additional advanced treatment processes (including ozone, advanced oxidation, activated carbon) were implemented. With increasing reliability of advanced water treatment processes and operational experience over several decades, the role of the environmental buffer to provide treatment and retention time has been revisited in projects that came online during the last 10 years. Recent trends are favoring direct potable water reuse applications in particular in the USA and Southern Africa that might evolve as the new paradigm for drinking water augmentation using impaired source water. However, questions remain regarding proper protection of public health, reliability and degree of treatment, appropriateness and design of monitoring strategies, maintenance requirements, and cost.
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Abbreviations
- ADD:
-
Acceptable daily dose
- AOP:
-
Advanced oxidation processes
- BAC:
-
Biologically active activated carbon
- BNR:
-
Biological nutrient removal
- CA:
-
California
- CAS:
-
Conventional activated sludge
- CDPH:
-
California Department of Public Health
- CEC:
-
Contaminants of emerging concern
- DAF:
-
Dissolved air flotation
- DALY:
-
Disability-adjusted life years
- DEET:
-
N,N-Diethyl-meta-toluamide
- DPR:
-
Direct potable water reuse
- EPA:
-
Environmental Protection Agency
- EQS:
-
Environmental Quality Standard
- EU:
-
European Union
- GAC:
-
Granular activated carbon
- H2O2 :
-
Hydrogen peroxide
- HAA:
-
Haloacetic acid
- IMS:
-
Integrated membrane system
- IPR:
-
Indirect potable water reuse
- LOD:
-
Limit of detection
- MCL:
-
Maximum contaminant level
- MF:
-
Microfiltration
- NA:
-
Not available
- NDMA:
-
N-Nitrosodimethylamine
- NRC:
-
National Research Council
- O3 :
-
Ozonation
- PFOA:
-
Perfluorooctanoic acid
- PFOS:
-
Perfluorooctane sulfonic acid
- PNEC:
-
Predicted no-effect concentration
- RBAL:
-
Risk-based action level
- RBF:
-
Riverbank filtration
- RfD:
-
Reference dose
- RO:
-
Reverse osmosis
- SAT:
-
Soil-aquifer treatment
- spp.:
-
Species pluralis
- TCEP:
-
Tris(2-chloroethyl) phosphate
- TCPP:
-
Tris(1-chloro-2-propyl) phosphate
- TDCP:
-
Tris(1,3-dichloro-2-propyl) phosphate
- THM:
-
Trihalomethane
- TTC:
-
Thresholds of toxicological concern
- UF:
-
Ultrafiltration
- UncFactor:
-
Uncertainty factor
- USA:
-
United States of America
- UV:
-
Ultraviolet light
- WTP:
-
Water treatment plant
- WWTP:
-
Wastewater treatment plant
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Drewes, J.E., Horstmeyer, N. (2015). Recent Developments in Potable Water Reuse. In: Fatta-Kassinos, D., Dionysiou, D., Kümmerer, K. (eds) Advanced Treatment Technologies for Urban Wastewater Reuse . The Handbook of Environmental Chemistry, vol 45. Springer, Cham. https://doi.org/10.1007/698_2015_341
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DOI: https://doi.org/10.1007/698_2015_341
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