The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds
This thesis is an investigation of disinfection in wastewater stabilization ponds (WSPs) as it relates to adequate wastewater treatment and, ultimately source water protection (SWP) in northern, particularly Indigenous, communities. WSPs are considered sustainable utilitarian wastewater treatment te...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Thesis |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | http://hdl.handle.net/1974/15377 |
id |
ftqueensuniv:oai:https://qspace.library.queensu.ca:1974/15377 |
---|---|
record_format |
openpolar |
spelling |
ftqueensuniv:oai:https://qspace.library.queensu.ca:1974/15377 2024-06-02T08:02:05+00:00 The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds MacDougall, Alan Civil Engineering Champagne, Pascale 2017-02-08T16:12:40Z application/pdf http://hdl.handle.net/1974/15377 eng eng Canadian theses http://hdl.handle.net/1974/15377 Attribution-NoDerivs 3.0 United States Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada ProQuest PhD and Master's Theses International Dissemination Agreement Intellectual Property Guidelines at Queen's University Copying and Preserving Your Thesis This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. http://creativecommons.org/licenses/by-nd/3.0/us/ Disinfection Photo-Oxidation WSP Inuit Indigenous Source Water Protection thesis 2017 ftqueensuniv 2024-05-06T10:47:32Z This thesis is an investigation of disinfection in wastewater stabilization ponds (WSPs) as it relates to adequate wastewater treatment and, ultimately source water protection (SWP) in northern, particularly Indigenous, communities. WSPs are considered sustainable utilitarian wastewater treatment technologies that are cost efficient and require minimal operation and maintenance. However, their performance is highly dependent on environmental conditions and disinfection performance, specifically, can be compromised in northern climates. The research is motivated by the following question: are there any simple approaches that could improve WSP disinfection without the need for conversion to a full-scale conventional treatment plant? The first study compared the ability of existing models in predicting cold climate disinfection performance in WSPs by comparing their predictions of mortality rates for fecal coliform bacteria with rates observed in a single-stage WSP in Pond Inlet, NU, during the 2015 treatment season. The results of this study demonstrated that existing models exhibit limitations in representing disinfection performance in Arctic WSPs. The second study focused on the development of a sunlight-mediated disinfection model for cold climate WSPs. A 2k factorial design was implemented to enable the examination of interaction effects of independent predictor variables related to sunlight-mediated disinfection (pH, dissolved oxygen, depth-averaged irradiance) on the mortality rates of Escherichia coli ATCC 11229. A controlled atmosphere chamber (CAC) was designed to control these parameters. Mortality rates between -0.8198-1.1057 h^-1 were observed throughout the experiments. A numerical model was presented and demonstrated a significant fit (p<0.001) to the data collected in the experiment. Temperature was found to have a more complex relationship with disinfection than previously thought, likely affecting both the growth and death rates of E. coli. In addition, the effect of humic substances (HS) ... Thesis Arctic inuit Pond Inlet Queen's University, Ontario: QSpace Arctic Pond Inlet ENVELOPE(-77.960,-77.960,72.699,72.699) |
institution |
Open Polar |
collection |
Queen's University, Ontario: QSpace |
op_collection_id |
ftqueensuniv |
language |
English |
topic |
Disinfection Photo-Oxidation WSP Inuit Indigenous Source Water Protection |
spellingShingle |
Disinfection Photo-Oxidation WSP Inuit Indigenous Source Water Protection MacDougall, Alan The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
topic_facet |
Disinfection Photo-Oxidation WSP Inuit Indigenous Source Water Protection |
description |
This thesis is an investigation of disinfection in wastewater stabilization ponds (WSPs) as it relates to adequate wastewater treatment and, ultimately source water protection (SWP) in northern, particularly Indigenous, communities. WSPs are considered sustainable utilitarian wastewater treatment technologies that are cost efficient and require minimal operation and maintenance. However, their performance is highly dependent on environmental conditions and disinfection performance, specifically, can be compromised in northern climates. The research is motivated by the following question: are there any simple approaches that could improve WSP disinfection without the need for conversion to a full-scale conventional treatment plant? The first study compared the ability of existing models in predicting cold climate disinfection performance in WSPs by comparing their predictions of mortality rates for fecal coliform bacteria with rates observed in a single-stage WSP in Pond Inlet, NU, during the 2015 treatment season. The results of this study demonstrated that existing models exhibit limitations in representing disinfection performance in Arctic WSPs. The second study focused on the development of a sunlight-mediated disinfection model for cold climate WSPs. A 2k factorial design was implemented to enable the examination of interaction effects of independent predictor variables related to sunlight-mediated disinfection (pH, dissolved oxygen, depth-averaged irradiance) on the mortality rates of Escherichia coli ATCC 11229. A controlled atmosphere chamber (CAC) was designed to control these parameters. Mortality rates between -0.8198-1.1057 h^-1 were observed throughout the experiments. A numerical model was presented and demonstrated a significant fit (p<0.001) to the data collected in the experiment. Temperature was found to have a more complex relationship with disinfection than previously thought, likely affecting both the growth and death rates of E. coli. In addition, the effect of humic substances (HS) ... |
author2 |
Civil Engineering Champagne, Pascale |
format |
Thesis |
author |
MacDougall, Alan |
author_facet |
MacDougall, Alan |
author_sort |
MacDougall, Alan |
title |
The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
title_short |
The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
title_full |
The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
title_fullStr |
The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
title_full_unstemmed |
The effects of climate and humic substances on disinfection performance in Arctic wastewater stabilization ponds |
title_sort |
effects of climate and humic substances on disinfection performance in arctic wastewater stabilization ponds |
publishDate |
2017 |
url |
http://hdl.handle.net/1974/15377 |
long_lat |
ENVELOPE(-77.960,-77.960,72.699,72.699) |
geographic |
Arctic Pond Inlet |
geographic_facet |
Arctic Pond Inlet |
genre |
Arctic inuit Pond Inlet |
genre_facet |
Arctic inuit Pond Inlet |
op_relation |
Canadian theses http://hdl.handle.net/1974/15377 |
op_rights |
Attribution-NoDerivs 3.0 United States Queen's University's Thesis/Dissertation Non-Exclusive License for Deposit to QSpace and Library and Archives Canada ProQuest PhD and Master's Theses International Dissemination Agreement Intellectual Property Guidelines at Queen's University Copying and Preserving Your Thesis This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. http://creativecommons.org/licenses/by-nd/3.0/us/ |
_version_ |
1800746579774144512 |