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, Joonwun Kang

Research output: Contribution to journalArticle

1 Citation (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/H 2 O 2 and UV/Cl 2 ) 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 UV 254 (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/H 2 O 2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl 2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H 2 O 2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.

Original languageEnglish
Article number1502
JournalApplied Sciences (Switzerland)
Volume8
Issue number9
DOIs
Publication statusPublished - 2018 Sep 1

Fingerprint

taste
odors
Coagulants
Odors
algae
Algae
Minerals
minerals
coagulation
Coagulation
composite materials
turbidity
Composite materials
Turbidity
test pilots
pH effects
dissolved organic matter
water treatment
Disinfection
Scavenging

All Science Journal Classification (ASJC) codes

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

Cite this

Abrha, Yirga Weldu ; Kye, Homin ; Kwon, Minhwan ; Lee, Doorae ; Kim, Kiho ; Jung, Youmi ; Ahn, Yongtae ; Kang, Joonwun. / 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. In: Applied Sciences (Switzerland). 2018 ; Vol. 8, No. 9.
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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/H 2 O 2 and UV/Cl 2 ) 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 UV 254 (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/H 2 O 2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl 2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H 2 O 2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.",
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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. / Abrha, Yirga Weldu; Kye, Homin; Kwon, Minhwan; Lee, Doorae; Kim, Kiho; Jung, Youmi; Ahn, Yongtae; Kang, Joonwun.

In: Applied Sciences (Switzerland), Vol. 8, No. 9, 1502, 01.09.2018.

Research output: Contribution to journalArticle

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AU - Abrha, Yirga Weldu

AU - Kye, Homin

AU - Kwon, Minhwan

AU - Lee, Doorae

AU - Kim, Kiho

AU - Jung, Youmi

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AU - Kang, Joonwun

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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/H 2 O 2 and UV/Cl 2 ) 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 UV 254 (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/H 2 O 2 process shows higher removal efficiency of geosmin and 2-MIB than the UV/Cl 2 process because of the pH effect. The results confirmed that the PMC-based coagulation followed by UV/H 2 O 2 process could be an effective process for the removal of algae, geosmin, and 2-MIB.

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