Persistent Link:
http://hdl.handle.net/10150/191341
Title:
Pathogen removal from wastewater by a duckweed pond
Author:
Falabi, Ablawa Jeanne.
Issue Date:
1996
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
Duckweed plants (Lemna spp) are increasingly being used to improve the quality of wastewater in many parts of the world. We investigated a duckweed (Lemna gibba L.)-covered pond for its ability to remove Gicrdiq Oyptosporidiurn, enteroviruses, coliphages, and enteric indicator bacteria from unchlorinated secondary effluent. Giardia cysts and Oyptosporidium oocysts were reduced by 98 and 89 percent, respectively; total coliforms by 61 percent; fecal colifoims by 62 percent; and bacteriophages by 40 percent. The results indicate that the larger organisms (parasites) settled to the bottom of the pond, while the removal of bacteriophages by the pond was not as effective. There was a significant correlation between the removal of Giardia cysts and Oyptosporidium oocysts by the pond (p <0.001). Influent turbidity and parasite removal were also significantly correlated (Oyptosporidium and turbidity, p 0.05; and for Giardia and turbidity, p 0.01). However, there appeared to be no correlation between the removal of these parasites and effluent turbidity.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Sewage -- Microbiology.; Water -- Waste.; Wetlands -- Environmental aspects.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Soil, Water, and Environmental Science; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Gerba, Charles P.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titlePathogen removal from wastewater by a duckweed ponden_US
dc.creatorFalabi, Ablawa Jeanne.en_US
dc.contributor.authorFalabi, Ablawa Jeanne.en_US
dc.date.issued1996en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractDuckweed plants (Lemna spp) are increasingly being used to improve the quality of wastewater in many parts of the world. We investigated a duckweed (Lemna gibba L.)-covered pond for its ability to remove Gicrdiq Oyptosporidiurn, enteroviruses, coliphages, and enteric indicator bacteria from unchlorinated secondary effluent. Giardia cysts and Oyptosporidium oocysts were reduced by 98 and 89 percent, respectively; total coliforms by 61 percent; fecal colifoims by 62 percent; and bacteriophages by 40 percent. The results indicate that the larger organisms (parasites) settled to the bottom of the pond, while the removal of bacteriophages by the pond was not as effective. There was a significant correlation between the removal of Giardia cysts and Oyptosporidium oocysts by the pond (p <0.001). Influent turbidity and parasite removal were also significantly correlated (Oyptosporidium and turbidity, p 0.05; and for Giardia and turbidity, p 0.01). However, there appeared to be no correlation between the removal of these parasites and effluent turbidity.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSewage -- Microbiology.en_US
dc.subject.lcshWater -- Waste.en_US
dc.subject.lcshWetlands -- Environmental aspects.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineSoil, Water, and Environmental Scienceen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairGerba, Charles P.en_US
dc.contributor.committeememberKarpiscak, Martin M.en_US
dc.contributor.committeememberThompson, Thomas L.en_US
dc.identifier.oclc226299634en_US
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