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Effect of O3 Dose on the O3/UV Treatment Process for the Removal of Pharmaceuticals and Personal Care Products in Secondary Effluent

1
Department of Civil and Environmental Engineering, Idaho State University, 921 S. 8th Ave., Stop 8060, Pocatello, ID 83209, USA
2
Department of Construction Environment Engineering, Environmental and Plant Engineering Institute, Korea Institute of Civil Engineering and Building Technology, University of Science & Technology/Senior Researcher, (Daehwa-Dong 2311) 283, Goyangdae-ro Ilsanseo-gu, Goyang-si, Kyonggi-do 411-712, Korea
3
Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
4
Department of Civil and Environmental Engineering, Idaho State University, 921 S. 8th Ave., Stop 8060, Pocatello, ID 83209, USA
*
Author to whom correspondence should be addressed.
ChemEngineering 2019, 3(2), 53; https://doi.org/10.3390/chemengineering3020053
Received: 28 February 2019 / Revised: 10 May 2019 / Accepted: 27 May 2019 / Published: 1 June 2019
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Abstract

A municipal wastewater treatment plant (WWTP) is a melting pot of numerous pharmaceuticals and personal care products (PPCPs) together with many other substances. The removal of PPCPs using advanced oxidation processes within a WWTP is one way to reduce the amount of PPCPs that potentially enter an aquatic environment. The aim of this study was to examine the effectiveness of the ozone (O3)/UV treatment process, especially, the effects of O3 dose and reaction time, on the removal of PPCPs in the secondary effluent of a WWTP. Experiments were conducted using a pilot-scale treatment process that consisted of two flow-through reactors connected in series. Each reactor was equipped with three 65 W lamps (UV65W). The experimental variables were ozone dosage (1, 2, 3, 4, and 6 mg L−1) and hydraulic retention time (HRT; 5 and 10 min). On the basis of the PPCP concentrations after O3/UV65W treatment and their limit of detection (LOD), 38 PPCPs detected in the secondary effluent were classified into 5 groups ranging from the category of “sensitive” to O3/UV65W or “unstable” in the O3/UV65W process to the category of “insensitive” to O3/UV65W or “very stable” in the O3/UV65W process. View Full-Text
Keywords: ozone; UV; pharmaceuticals; personal care products; wastewater; advanced oxidation process ozone; UV; pharmaceuticals; personal care products; wastewater; advanced oxidation process
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Paucar, N.E.; Kim, I.; Tanaka, H.; Sato, C. Effect of O3 Dose on the O3/UV Treatment Process for the Removal of Pharmaceuticals and Personal Care Products in Secondary Effluent. ChemEngineering 2019, 3, 53.

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