Impact of periods of no inflow on dissolved organic carbon (DOC) removal by Biological Ion Exchange (BIEX) systems
department or school: Applied Science, Faculty of
department or school: Civil Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Borah, Archita
issued: 2022-03-21T14:44:50Z
issued: 2022
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: Biological Ion Exchange (BIEX) offers effective removal of dissolved organic carbon (DOC) from surface waters without the need for frequent regeneration, making it suitable for small and remote communities. Traditional work hours, night routines, and system maintenances can impose conditions in small and remote communities, where inflow of water to be treated is highly variable, and possibly intermittent. The present study investigated the impact of periods of no inflow on DOC removal by BIEX systems. Various operating conditions were applied to the BIEX systems, to investigate if the extent of the potential impacts of periods of no inflow were influenced by the duration and/or frequencies of these periods. Effluent recirculation within the BIEX systems were also considered as a means to mitigate the extent of the potential impacts of periods of no inflow. The results of the present study indicated that three phases with distinct treatment mechanisms occurred in the BIEX systems: primary IEX, secondary IEX, and stunted secondary IEX (i.e., biodegradation). Considering these three phases of treatment, in general, operation of BIEX systems with periods of no inflow impacted DOC removal. The extent of the potential impacts of no inflow on DOC removal was also affected by the duration and/or frequency of the periods of no inflow. DOC removal in BIEX systems operated with a daily and short (~3h) period of no inflow and a weekly and long (~2d) period of no inflow were similar to continuous operations. However, a daily and long (~8h) period of no inflow resulted in a lower DOC removal than continuous operations. Also, in general, extent of the potential impacts of operation with periods of no inflow on DOC removal could not be mitigated by effluent recirculation within the BIEX systems. Overall, the study offered insight into operation of BIEX systems with periods of no inflow and the impact of the duration and/or frequency of periods of no inflow as well as effluent recir…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/80973
note: Impact of periods of no inflow on dissolved organic carbon (DOC) removal by Biological Ion Exchange (BIEX) systems by Archita Borah B.Eng, Gauhati University, 2016 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Civil Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) March 2022 © Archita Borah, 2022 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, a thesis entitled: Impact of periods of no inflow on dissolved organic carbon (DOC) removal by Biological Ion Exchange (BIEX) systems submitted by Archita Borah in partial fulfillment of the requirements for the degree of Master of Applied Science in Civil Engineering Examining Committee: Dr. Pierre Bérubé, Professor, Environmental Systems Engineering, Department of Civil Engineering Supervisor Dr. Madjid Mohseni, Professor, Department of Chemical and Biological Engineering and Scientific Director, RES’EAU Centre for Mobilizing Innovation Supervisory Committee Member iii Abstract Biological Ion Exchange (BIEX) offers effective removal of dissolved organic carbon (DOC) from surface waters without the need for frequent regeneration, making it suitable for small and remote communities. Traditional work hours, night routines, and system maintenances can impose conditions in small and remote communities, where inflow of water to be treated is highly variable, and possibly intermittent. The present study investigated the impact of periods of no inflow on DOC removal by BIEX systems. Various operating conditions were applied to the BIEX systems, to investigate if the extent of the potential impacts of periods of no inflow were influenced by the duration and/or frequencies of these periods. Effluent recirculation within the BIEX systems were also considered as a means to mitigate the extent of the potential impacts of peri…
has type: Thesis/Dissertation
date issued: 2022-05
is shown at: 10.14288/1.0407274
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Bérubé, Pierre R.
type: Text
identifier URI: http://hdl.handle.net/2429/80973