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A platform for research: civil engineering, architecture and urbanism
Virus Removal from Wastewater in a Multispecies Subsurface‐Flow Constructed Wetland
Virus removal was studied in a multispecies subsurface‐flow constructed wetland. Tracer studies and a virus survival test were conducted using bromide and bacteriophage PRD1 that were simultaneously added into a 6‐year‐old gravel‐filled wetland. The estimated dimensionless variance and the observed bromide breakthrough curve suggest a plug‐flow reactor with some dispersion. Most of the PRD1 was removed during the first 4 days; however, the PRD1 background concentration was not reached by the end of the study. Average bacteriophage removal was 98.8%, whereas bromide mass recovery was 75%. The removal rate of PRD1 was estimated to be −1.17 d−1; in contrast, its inactivation rate in situ for a 12.4‐day period was −0.16 d−1. Apparently, virus removal is governed by an initial irreversible attachment followed by a comparatively long inactivation period. This study suggests that a subsurface‐flow wetland can decrease the virus load by approximately 99% with a 5.5‐day detention time.
Virus Removal from Wastewater in a Multispecies Subsurface‐Flow Constructed Wetland
Virus removal was studied in a multispecies subsurface‐flow constructed wetland. Tracer studies and a virus survival test were conducted using bromide and bacteriophage PRD1 that were simultaneously added into a 6‐year‐old gravel‐filled wetland. The estimated dimensionless variance and the observed bromide breakthrough curve suggest a plug‐flow reactor with some dispersion. Most of the PRD1 was removed during the first 4 days; however, the PRD1 background concentration was not reached by the end of the study. Average bacteriophage removal was 98.8%, whereas bromide mass recovery was 75%. The removal rate of PRD1 was estimated to be −1.17 d−1; in contrast, its inactivation rate in situ for a 12.4‐day period was −0.16 d−1. Apparently, virus removal is governed by an initial irreversible attachment followed by a comparatively long inactivation period. This study suggests that a subsurface‐flow wetland can decrease the virus load by approximately 99% with a 5.5‐day detention time.
Virus Removal from Wastewater in a Multispecies Subsurface‐Flow Constructed Wetland
Vidales, Juan A. (author) / Gerba, Charles P. (author) / Karpiscak, Martin M. (author)
Water Environment Research ; 75 ; 238-245
2003-05-01
8 pages
Article (Journal)
Electronic Resource
English
Performance of Horizontal Subsurface Flow Constructed Wetland of Application of Oily Wastewater
| British Library Conference Proceedings | 2013