The Impact of Natural Variation of OH Radical Demand of Drinking Water Sources on the Optimum Operation of the UV/H2O2 Process

Minhwan Kwon, Seonbaek Kim, Youmi Jung, Tae Mun Hwang, Mihaela I. Stefan, Joon Wun Kang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Hydroxyl radical (•OH) water demand is a key parameter which impacts the design and operation of UV/H2O2 process for water treatment. Long-term monitoring of the •OH water demand in water sources used for drinking water production indicated significant seasonal variations of this parameter (1.59 × 104 to 4.98 × 104 s-1), which coincided with the occurrence of algal blooming events. Pilot-scale tests at a drinking water treatment plant confirmed that the UV/H2O2 process performance for contaminant removal is predictable when the •OH water demand is accurately determined through a validated experimental method. A predictive tool was developed to identify the optimum operating conditions of the UV system with the UV/H2O2 process and it was used to demonstrate the significant impact of seasonal variations of •OH water demand on the operating costs.

Original languageEnglish
Pages (from-to)3177-3186
Number of pages10
JournalEnvironmental Science and Technology
Volume53
Issue number6
DOIs
Publication statusPublished - 2019 Mar 19

Bibliographical note

Funding Information:
We acknowledge Daelim Industrial and the Waterworks Office of Metropolitan Seoul Government for their valuable support. This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2016R1A2B4015598) and of the ‘Algae Monitoring and Removal-Utilization Technology Implementation’ Project (code 2015001800001) funded by Korea Environmental Industry & Technology Institute.

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

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