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Open AccessArticle

Research about Organic Matter Removal and Biofilms Development of Pilot-Scale UV/H2O2-BAC Process

1
Institute of Water Treatment, Shandong Province Water Supply and Drainage Monitoring Center, Jinan 250101, China
2
College of Environment, Hohai University, Nanjing 210098, China
3
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
4
Jinan Hongquan Water Making Co., Ltd., Jinan Water Group Co., Ltd., Jinan 250012, China
5
School of Evironment, Tsinghua University, Beijing 100084, China
6
Xi’an High-Tech Institute, Xi’an 710025, China
7
School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Marco Guida
Water 2021, 13(4), 565; https://doi.org/10.3390/w13040565
Received: 17 January 2021 / Revised: 13 February 2021 / Accepted: 17 February 2021 / Published: 23 February 2021
(This article belongs to the Special Issue AOP Processes for Organics Removal in Water and Wastewater)
As a green advanced process for drinking water treatment, the UV/hydrogen peroxide (UV/H2O2) process has been gradually applied in China. To study the effect and mechanism of organic matter removal and the development of microbial communities in the UV/H2O2-biological activated carbon (UV/H2O2-BAC) process, a pilot-scale UV/H2O2-BAC system was built and operated over one year. Low water temperature affects the UV/H2O2 process efficiency, the biofilms in the BAC system were mature and stable after 240 days, and the contribution rate of BAC adsorption to dissolved organic carbon (DOC) removal was approximately 14.2% after one year of operation. The liquid chromatography-organic carbon detection (LC-OCD) analysis shows that UV/H2O2 process can increase the amounts of Low Molecular Weight (LMW) neutrals, and the specific UV absorbance (SUVA254) value is not suitable for predicting Trihalomethanes (THMs) precursor contents in water after UV/H2O2 treatment. High-throughput sequencing results prove that microbial species in the middle section are the most abundant compared to those in the influent and effluent sections, hydrogen peroxide has lower inhibition on the development of microbial community than ozone and the low concentration of hydrogen peroxide (<0.25 mg/L) promotes the development of the microbial communities, hydrogen peroxide can reduce Proteobacteria abundance by inhibiting the growth of anaerobes. Acidobacteria may have a certain contribution to the degradation of soil organic matter (SOM), and the effluent section of BAC with low DOC concentration cannot form the dominant species of Rhodobacter. View Full-Text
Keywords: drinking water treatment; granular activated carbon; UV-AOPs; biofilm microbial community drinking water treatment; granular activated carbon; UV-AOPs; biofilm microbial community
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MDPI and ACS Style

Song, W.; Li, C.; Du, Z.; Yue, J.; Sun, W.; Hou, L.; Liu, J.; Jia, R. Research about Organic Matter Removal and Biofilms Development of Pilot-Scale UV/H2O2-BAC Process. Water 2021, 13, 565. https://doi.org/10.3390/w13040565

AMA Style

Song W, Li C, Du Z, Yue J, Sun W, Hou L, Liu J, Jia R. Research about Organic Matter Removal and Biofilms Development of Pilot-Scale UV/H2O2-BAC Process. Water. 2021; 13(4):565. https://doi.org/10.3390/w13040565

Chicago/Turabian Style

Song, Wuchang; Li, Congcong; Du, Zhenqi; Yue, Jiangang; Sun, Wenjun; Hou, Lian; Liu, Jianguang; Jia, Ruibao. 2021. "Research about Organic Matter Removal and Biofilms Development of Pilot-Scale UV/H2O2-BAC Process" Water 13, no. 4: 565. https://doi.org/10.3390/w13040565

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