Efficient treatment of oil sands produced water: Process integration using ion exchange regeneration wastewater as a chemical coagulant

Mohammadtabar, Farshad; Pillai, Rahul; Khorshidi, Behnam; Hayatbakhsh, Armin; Sadrzadeh, Mohtada

doi:10.1016/j.seppur.2019.03.070

Cited by 25 publications

(13 citation statements)

References 40 publications

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“…Mohammadtabar, Pillai, Khorshidi, Hayatbakhsh, and Sadrzadeh (2019) first reported that ion exchange regeneration wastewater (IERW) was used as a coagulant to treat boiler blowdown (BBD) water from steam‐assisted gravity drainage in oil sands industry. IERW contained concentrated ion solutions and was able to remove silica and total organic carbon effectively.…”

Section: Chemical Processesmentioning

confidence: 99%

Physico‐chemical processes

Yu¹,

Yao²,

Pan³

et al. 2020

Water Environment Research

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By summarizing 187 relevant research articles published in 2019, the review is focused on the research progress of physicochemical processes for wastewater treatment. This review divides into two sections, physical processes and chemical processes. The physical processes section includes three subsections , that is, adsorption, granular filtration, and dissolved air flotation, whereas the chemical processes section has five subsections , that is, coagulation/flocculation, advanced oxidation processes, electrochemical, capacitive deionization, and ion exchange.

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Section: Chemical Processesmentioning

confidence: 99%

Physico‐chemical processes

Yu¹,

Yao²,

Pan³

et al. 2020

Water Environment Research

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“…Process-2: In the second process, the concentrate solution (Retentate-1) of process-1 was treated by IERW (IERW conditioning). The details about this pre-treatment are provided in the previous work [38]. In summary, the chemical pre-treatment was conducted by adding IERW as a coagulant to BBD water at a 2:12 (IERW:BBD) ratio.…”

Section: Coagulation-membrane Hybrid Processesmentioning

confidence: 99%

“…During the last decade, numerous studies have focused on improving the water treatment applications can potentially improve the overall performance due to the low vulnerability of the FO process to fouling as compared to pressure-driven filtration processes [37]. In the previous study, it was demonstrated that using IERW as a chemical coagulant could remove a significant amount of organic matter and silica were removed from the BBD water at the expense of increasing the TDS concentration [38]. Such a high TDS concentration may potentially increase the volume of generated BBD in the OTSGs.…”

Section: Introductionmentioning

confidence: 99%

Integrated Coagulation-Membrane Processes with Zero Liquid Discharge (ZLD) Configuration for the Treatment of Oil Sands Produced Water

Mohammadtabar

Khorshidi

Hayatbakhsh³

et al. 2019

Water

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This study explores the feasibility of implementing five hybrid coagulation-membrane processes for the treatment of the boiler blow-down (BBD) water from an oil sands steam assisted gravity drainage (SAGD) operation. The processes involved (1) direct nanofiltration (NF) of the BBD water, (2) pre-treatment of the NF retentate using ion exchanger regeneration wastewater (IERW) as a chemical coagulant followed by NF, (3) pre-treatment of BBD water using IERW followed by NF, (4) dual pre-treatment of BBD water using IERW and soda ash (sodium carbonate, Na2CO3) followed by NF, and (5) forward osmosis (FO) treatment of the BBD water using IERW as a draw solution followed by NF treatment of diluted draw solution. These scenarios were compared based on total flux decline ratio (DRt), flux recovery ratio (FRR), and total dissolved solids (TDS) removal over the final NF treatment to suggest an efficient treatment technique to avoid an undesired increase in the capital and operating expenses. It was found that process-1 provided the highest selectivity toward dissolved solids (80%) with a flux decline and recovery ration of 89.6% and 97.4%, respectively. Considering the permeation flux, process-4 exhibited the lowest flux decline (86.1%) and highest recovery ratio (97.5%) compared to other processes, proving the successful role of soda ash softening, as a chemical pretreatment method, in improving the performance of membrane filtration. Process-2 presented a mediocre performance with DRt, FRR, and TDS rejection of 93.3%, 97.3%, and 74%, respectively. Finally, process-3 and process-5 showed the lowest performance among all the scenarios with low flux recovery and low permeability, respectively. In addition, process-3 was expected to be cost-efficient since it only uses an on-site generated waste as a coagulant for the chemical pretreatment of the membrane filtration unit. The optimum scenario was proposed to be the two-stage membrane process, with direct NF of BBD followed by the post-treatment of the retentate via a hybrid chemical conditioning using IERW and soda ash softening, followed by a second NF. Overall, this integrated process offered a highly efficient mean with a zero liquid discharge (ZLD) system for the treatment of high pH wastewaters into an uncontaminated stream for the boilers.

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“…Wélté et al (2009) presented in detail useful guidelines to implement the ion exchange unit process for portable water treatment [22]. The different concentrations and types of regenerant utilized to restore the resin will create different exchange capacities [23]. The typical exchanger capacities of the zeolite cation exchanger are in the range of 0.05 to 0.1 eq/kg and for synthetic resin is 2 to 10 eq/kg of resin.…”

Section: Ion Exchangementioning

confidence: 99%

Development of Graphical Interface Simulator of Advanced Wastewater Treatment Design Process for Teaching, Learning, and Assessment

Albani

Ibrahim

2019

Designs

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This paper presents the concept of check and balance approach in teachıng, learning and assessment processes with the development of a graphical interface tool to solve an advanced wastewater treatment design problem. The developed graphical interface improves the quality of teaching, learning, and the assessment of both, understanding the calculation approaches, as well as understanding the concepts. The tool acts as a calculator or a simulator of a unit converter, population equivalent, designing sewerage systems and selected unit processes of advanced wastewater treatment. A close-ended survey assessment was conducted with a total of 49 respondents who were the registered students for the subject of advanced wastewater treatment. About 79% of respondents agreed that it was hard to score a high mark in the advanced wastewater treatment exam. However, 100% of respondents agreed that the tool could help them to accelerate their understanding of the subject topic. All things considered, the findings of this study show that the developed tool is a potential tool that can aid in the teaching, learning, and assessment processes of any difficult subject that is taught in higher-learning institutions.

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Efficient treatment of oil sands produced water: Process integration using ion exchange regeneration wastewater as a chemical coagulant

Cited by 25 publications

References 40 publications

Physico‐chemical processes

Physico‐chemical processes

Integrated Coagulation-Membrane Processes with Zero Liquid Discharge (ZLD) Configuration for the Treatment of Oil Sands Produced Water

Development of Graphical Interface Simulator of Advanced Wastewater Treatment Design Process for Teaching, Learning, and Assessment

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