Characterization and Treatment of Oil Sands Blowdown Water

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atmire.migration.oldid4636
dc.contributor.advisorAchari, Gopal
dc.contributor.advisorLangford, Cooper
dc.contributor.authorMartez, Vitselle
dc.contributor.committeememberNowicki, Edwin
dc.contributor.committeememberPriest, Jeffrey
dc.contributor.committeememberGay De Montella, Rafael
dc.contributor.committeememberSinghal, Ashok
dc.date.accessioned2016-07-12T21:40:35Z
dc.date.available2016-07-12T21:40:35Z
dc.date.issued2016
dc.date.submitted2016en
dc.description.abstractThe high concentrations of organic and inorganic impurities from the blowdown water of the Steam Assisted Gravity Drainage (SAGD) process in the oilsands operations cause significant operational and environmental issues. In this study the actual SAGD boiler and evaporator blowdown was investigated and found to contain complex mixtures of TSS, TOC and TDS. Further investigations were focused on SAGD boiler blowdown (BBD) water and included the screening of seven advanced oxidation processes (AOPs) which resulted in the selection of three O3/UV, H2O2/UV and O3/H2O2/UV AOP’s for testing TOC degradation in each sequence of the HCl-acidified, CaO-alkalized, CO2-neutralized and original BBD waters. O3/H2O2/UV irradiation showed effective degradation in the neutralized, alkalized, acidified and original BBD at 70%, 68.3%, 55.6% and 9.4% TOC removal. An unique, semi-batch treatment system was designed, integrated and evaluated using HCl-acidified, CaO-alkalized, CO2-neutralized BBD water in three stages; (1) Stage A; precipitation and centrifugation for TSS and TOC removal, (2) Stage B; O3/H2O2/UV for TOC degradation, and (3) Stage C; reverse osmosis filtration for the TDS and residual TOC removal. Stage A results showed that the HCl-acidified BBD at pH 4.2 achieved the highest TOC removal by 44.7% and TSS by 98.5% likely because the net reduction in the molecular electrical repulsion and neutralization of acid groups led to their aggregation and removal. Stage B results showed that the O3/H2O2/UV achieved the highest TOC removal of 68.0% in the CO2-neutralized BBD likely because interferences of the competing inorganic carbonate and bicarbonate species that scavenge hydroxyl radicals were minimized. Stage C results showed that reverse osmosis filtration purified all samples, but achieved the highest removal of 99.7% residual TOC and 98.8% TDS in the HCl-acidified BBD and the highest permeate recovery at 40.5% in the alkalized and neutralized BBD. Since there is a lack of published information on SAGD blowdown the result of this study is significant and a precursor to advancing future research solutions.en_US
dc.identifier.citationMartez, V. (2016). Characterization and Treatment of Oil Sands Blowdown Water (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/25263en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/25263
dc.identifier.urihttp://hdl.handle.net/11023/3123
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.facultySchulich School of Engineering
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Environmental
dc.subject.classificationCharacterization of complex blowdown and heat exchanger depositsen_US
dc.subject.classificationSAGD, CSS, OTSG Steam Boiler Evaporatoren_US
dc.subject.classificationSteam Oil Ratio,en_US
dc.subject.classificationOilsands Evaporator and Boiler blowdown wateren_US
dc.subject.classificationClean Technology blowdown recycleen_US
dc.subject.classificationDisposal Water Treatmenten_US
dc.subject.classificationAdvanced Oxidation Processes - Ozone-H2O2-UVen_US
dc.subject.classificationChemical Precipitation and Centrifugal Separationen_US
dc.subject.classificationReverse Osmosis coupled with AOP for Blowdownen_US
dc.subject.classificationRegulatory Blowdown waste Directive 081en_US
dc.subject.classificationMake up Wateren_US
dc.subject.classificationproduced water treatment and recycleen_US
dc.subject.classificationboiler feed water treatment and recycleen_US
dc.titleCharacterization and Treatment of Oil Sands Blowdown Water
dc.typedoctoral thesis
thesis.degree.disciplineCivil Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.item.requestcopytrue
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