Virus removal from wastewater in a multispecies subsurface-flow constructed wetland

Juan A. Vidales, Charles P Gerba, Martin M. Karpiscak

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)238-245
Number of pages8
JournalWater Environment Research
Volume75
Issue number3
DOIs
StatePublished - May 2003

Fingerprint

subsurface flow
constructed wetlands
Wetlands
constructed wetland
bromides
Viruses
wastewater
virus
Wastewater
Bromides
bromide
bacteriophages
viruses
Bacteriophages
bacteriophage
inactivation
wetlands
wetland
viral load
gravel

Keywords

  • Bacteriophage
  • Bacteriophage PRD1
  • Bromide
  • Constructed wetland
  • Subsurface-flow wetland
  • Tracer study
  • Viruses
  • Wastewater

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry
  • Aquatic Science
  • Water Science and Technology

Cite this

Virus removal from wastewater in a multispecies subsurface-flow constructed wetland. / Vidales, Juan A.; Gerba, Charles P; Karpiscak, Martin M.

In: Water Environment Research, Vol. 75, No. 3, 05.2003, p. 238-245.

Research output: Contribution to journalArticle

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