Removal of algae, and taste and odor compounds by a combination of Plant-Mineral Composite (PMC) coagulant with UV-AOPs: Laboratory and pilot scale studies

Yirga Weldu Abrha; Homin Kye; Minhwan Kwon; Doorae Lee; Kiho Kim; Youmi Jung; Yongtae Ahn; Joon Wun Kang

doi:10.3390/app8091502

Removal of algae, and taste and odor compounds by a combination of Plant-Mineral Composite (PMC) coagulant with UV-AOPs: Laboratory and pilot scale studies

Yirga Weldu Abrha, Homin Kye, Minhwan Kwon, Doorae Lee, Kiho Kim, Youmi Jung, Yongtae Ahn, Joon Wun Kang

Division of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The seasonal occurrence of algae blooms in surface waters remains a common problem, such as taste and odor (T & Os), the risk of disinfection by-products (DBPs), and disturbance to water treatment systems. The coagulation efficiency of plant-mineral composite (PMC) coagulant followed by UV-based advanced oxidation processes (UV-AOPs; UV/H₂O₂ and UV/Cl₂) was evaluated for removal of algae, turbidity, dissolved organic matters, and taste and odor compounds in lab-scale and pilot-scale tests. In the lab-scale test, coagulation process with 20 mg/L of PMC shows high removal efficiency of turbidity (94%) and algae (99%) and moderate removal efficiency of UV₂₅₄ (51%) and geosmin (46%). The pilot test results also show good removal efficiency of turbidity (64%), chlorophyll-a (96%). After PMC coagulation process, the major water factors, which affected the performance of UV-AOPs (i.e., UV transmittance (85-94%), and scavenging factor (64,998-28,516 s^-1)), were notably improved, and further degradation of geosmin and 2-methylisoborneol (2-MIB) was achieved in both lab-and pilot-scale tests of the UV-AOPs. The UV/H₂O₂ process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl₂ process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H₂O₂ process could be an effective process for the removal of algae, geosmin, and 2-MIB.

Original language	English
Article number	1502
Journal	Applied Sciences (Switzerland)
Volume	8
Issue number	9
DOIs	https://doi.org/10.3390/app8091502
Publication status	Published - 2018 Sept 1

Bibliographical note

Funding Information:
Funding: This research was funded by the Korea Ministry of Environment (MOE) as “A real scale project on algae monitoring and removal-utilization technology” (2014001800001).

Publisher Copyright:
© 2018 by the authors.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Instrumentation
Engineering(all)
Process Chemistry and Technology
Computer Science Applications
Fluid Flow and Transfer Processes

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10.3390/app8091502

Cite this

@article{fd210bf2c4174217b3663a676f2c5630,

title = "Removal of algae, and taste and odor compounds by a combination of Plant-Mineral Composite (PMC) coagulant with UV-AOPs: Laboratory and pilot scale studies",

abstract = "The seasonal occurrence of algae blooms in surface waters remains a common problem, such as taste and odor (T & Os), the risk of disinfection by-products (DBPs), and disturbance to water treatment systems. The coagulation efficiency of plant-mineral composite (PMC) coagulant followed by UV-based advanced oxidation processes (UV-AOPs; UV/H2O2 and UV/Cl2) was evaluated for removal of algae, turbidity, dissolved organic matters, and taste and odor compounds in lab-scale and pilot-scale tests. In the lab-scale test, coagulation process with 20 mg/L of PMC shows high removal efficiency of turbidity (94%) and algae (99%) and moderate removal efficiency of UV254 (51%) and geosmin (46%). The pilot test results also show good removal efficiency of turbidity (64%), chlorophyll-a (96%). After PMC coagulation process, the major water factors, which affected the performance of UV-AOPs (i.e., UV transmittance (85-94%), and scavenging factor (64,998-28,516 s-1)), were notably improved, and further degradation of geosmin and 2-methylisoborneol (2-MIB) was achieved in both lab-and pilot-scale tests of the UV-AOPs. The UV/H2O2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H2O2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.",

author = "Abrha, {Yirga Weldu} and Homin Kye and Minhwan Kwon and Doorae Lee and Kiho Kim and Youmi Jung and Yongtae Ahn and Kang, {Joon Wun}",

note = "Funding Information: Funding: This research was funded by the Korea Ministry of Environment (MOE) as “A real scale project on algae monitoring and removal-utilization technology” (2014001800001). Publisher Copyright: {\textcopyright} 2018 by the authors.",

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doi = "10.3390/app8091502",

language = "English",

volume = "8",

journal = "Applied Sciences (Switzerland)",

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T1 - Removal of algae, and taste and odor compounds by a combination of Plant-Mineral Composite (PMC) coagulant with UV-AOPs

T2 - Laboratory and pilot scale studies

AU - Abrha, Yirga Weldu

AU - Kye, Homin

AU - Kwon, Minhwan

AU - Lee, Doorae

AU - Kim, Kiho

AU - Jung, Youmi

AU - Ahn, Yongtae

AU - Kang, Joon Wun

N1 - Funding Information: Funding: This research was funded by the Korea Ministry of Environment (MOE) as “A real scale project on algae monitoring and removal-utilization technology” (2014001800001). Publisher Copyright: © 2018 by the authors.

PY - 2018/9/1

Y1 - 2018/9/1

N2 - The seasonal occurrence of algae blooms in surface waters remains a common problem, such as taste and odor (T & Os), the risk of disinfection by-products (DBPs), and disturbance to water treatment systems. The coagulation efficiency of plant-mineral composite (PMC) coagulant followed by UV-based advanced oxidation processes (UV-AOPs; UV/H2O2 and UV/Cl2) was evaluated for removal of algae, turbidity, dissolved organic matters, and taste and odor compounds in lab-scale and pilot-scale tests. In the lab-scale test, coagulation process with 20 mg/L of PMC shows high removal efficiency of turbidity (94%) and algae (99%) and moderate removal efficiency of UV254 (51%) and geosmin (46%). The pilot test results also show good removal efficiency of turbidity (64%), chlorophyll-a (96%). After PMC coagulation process, the major water factors, which affected the performance of UV-AOPs (i.e., UV transmittance (85-94%), and scavenging factor (64,998-28,516 s-1)), were notably improved, and further degradation of geosmin and 2-methylisoborneol (2-MIB) was achieved in both lab-and pilot-scale tests of the UV-AOPs. The UV/H2O2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H2O2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.

AB - The seasonal occurrence of algae blooms in surface waters remains a common problem, such as taste and odor (T & Os), the risk of disinfection by-products (DBPs), and disturbance to water treatment systems. The coagulation efficiency of plant-mineral composite (PMC) coagulant followed by UV-based advanced oxidation processes (UV-AOPs; UV/H2O2 and UV/Cl2) was evaluated for removal of algae, turbidity, dissolved organic matters, and taste and odor compounds in lab-scale and pilot-scale tests. In the lab-scale test, coagulation process with 20 mg/L of PMC shows high removal efficiency of turbidity (94%) and algae (99%) and moderate removal efficiency of UV254 (51%) and geosmin (46%). The pilot test results also show good removal efficiency of turbidity (64%), chlorophyll-a (96%). After PMC coagulation process, the major water factors, which affected the performance of UV-AOPs (i.e., UV transmittance (85-94%), and scavenging factor (64,998-28,516 s-1)), were notably improved, and further degradation of geosmin and 2-methylisoborneol (2-MIB) was achieved in both lab-and pilot-scale tests of the UV-AOPs. The UV/H2O2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H2O2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.

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DO - 10.3390/app8091502

M3 - Article

AN - SCOPUS:85052807692

SN - 2076-3417

VL - 8

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

IS - 9

M1 - 1502

ER -

Removal of algae, and taste and odor compounds by a combination of Plant-Mineral Composite (PMC) coagulant with UV-AOPs: Laboratory and pilot scale studies

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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