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Combining KMnO4 pre-oxidation and bioaugmented sand filtration to simultaneously treat cyanobacterial bloom lake water and released Mn(II)
Bai, Yaohui; Hu, Wanchao; Jian, Zhiyu; Qi, Weixiao; Chang, Yangyang; Huo, Yang; Liao, Kailingli; Qu, Jiuhui
2019-12-01
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume228Pages:-
AbstractHarmful cyanobacterial blooms negatively impact lake ecosystems and affect drinking water treatment when using bloom source water. To guarantee effluent water quality, pre-oxidation is frequently used to break down cyanobacteria. However, the release of contaminants from cyanobacterial cells can be an issue during treatment. Here we proposed a novel drinking water treatment technique based on the characteristics of cyanobacterial blooms in an eutrophicated lake. Using molecular flow cytometry and 16S rRNA sequencing we compared the microbial community biomass and composition between cyanobacterial bloom and non-bloom events. Results demonstrated a cyanobacterial composition shift from an unidentified Nostocaceae genus to Microcystis and a 21-times increase in cyanobacterial biomass after a bloom event. Based on these findings, KMnO4 was selected as a pre-oxidation agent for lake water treatment. Batch experiments revealed that the addition of KMnO4 did not increase the concentration of microcystin-LR but did increase the release of Mn(II) into water. To eliminate this issue, we applied a bioaugmented sand filtration process. Using pure Mn(II)-oxidizing bacterium Pseudomonas sp. QJX-1 and biofilmed quartz sands from an existing sand filter, we demonstrated that bioaugmented sand filtration transformed Mn(II) to biogenic manganese oxide, which exhibited strong oxidation and adsorption capabilities for organics and metalloids. Hence, we propose an alternative KMnO4 pre-oxidation plus bioaugmented sand filtration system to improve bloom water treatment.
Department中国科学院饮用水科学与技术重点实验室
KeywordCyanobacterial blooms Community composition shift Microcystis KMnO4 pre-oxidization Bioaugmented sand filtration
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/43428
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Ctr Water & Ecol, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Bai, Yaohui,Hu, Wanchao,Jian, Zhiyu,et al. Combining KMnO4 pre-oxidation and bioaugmented sand filtration to simultaneously treat cyanobacterial bloom lake water and released Mn(II)[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2019,228:-.
APA Bai, Yaohui.,Hu, Wanchao.,Jian, Zhiyu.,Qi, Weixiao.,Chang, Yangyang.,...&Qu, Jiuhui.(2019).Combining KMnO4 pre-oxidation and bioaugmented sand filtration to simultaneously treat cyanobacterial bloom lake water and released Mn(II).SEPARATION AND PURIFICATION TECHNOLOGY,228,-.
MLA Bai, Yaohui,et al."Combining KMnO4 pre-oxidation and bioaugmented sand filtration to simultaneously treat cyanobacterial bloom lake water and released Mn(II)".SEPARATION AND PURIFICATION TECHNOLOGY 228(2019):-.
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