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Research about Organic Matter Removal and Biofilms Development of Pilot-Scale $UV/H_{2}O_{2}$-BAC Process
| Content Provider | MDPI |
|---|---|
| Author | Song, Wuchang Li, Congcong Du, Zhenqi Yue, Jiangang Sun, Wenjun Hou, Lian Liu, Jianguang Jia, Ruibao |
| Copyright Year | 2021 |
| Description | As a green advanced process for drinking water treatment, the UV/hydrogen peroxide $(UV/H_{2}O_{2}$) 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 $UV/H_{2}O_{2}$-biological activated carbon $(UV/H_{2}O_{2}$-BAC) process, a pilot-scale $UV/H_{2}O_{2}$-BAC system was built and operated over one year. Low water temperature affects the $UV/H_{2}O_{2}$ 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 $UV/H_{2}O_{2}$ process can increase the amounts of Low Molecular Weight (LMW) neutrals, and the specific UV absorbance $(SUVA_{254}$) value is not suitable for predicting Trihalomethanes (THMs) precursor contents in water after $UV/H_{2}O_{2}$ 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. |
| Starting Page | 565 |
| e-ISSN | 20734441 |
| DOI | 10.3390/w13040565 |
| Journal | Water |
| Issue Number | 4 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-02-23 |
| Access Restriction | Open |
| Subject Keyword | Water Water Science and Technology Drinking Water Treatment Granular Activated Carbon Uv-aops Biofilm Microbial Community |
| Content Type | Text |
| Resource Type | Article |
