globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.08.023
Scopus记录号: 2-s2.0-85053032849
论文题名:
Electron donating capacity reduction of dissolved organic matter by solar irradiation reduces the cytotoxicity formation potential during wastewater chlorination
作者: Du Y.; Wu Q.-Y.; Lv X.-T.; Ye B.; Zhan X.-M.; Lu Y.; Hu H.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145
起始页码: 94
结束页码: 102
语种: 英语
英文关键词: Chlorination ; Cytotoxicity formation potential ; Electron donating capacity ; Solar irradiation ; Total organic halogen formation potential
Scopus关键词: Biogeochemistry ; Biological materials ; Byproducts ; Chlorination ; Chlorine ; Cytotoxicity ; Fourier transforms ; Irradiation ; Organic compounds ; Photoelectron spectroscopy ; Potable water ; Solar radiation ; Surface waters ; Wastewater reclamation ; Wastewater treatment ; Water conservation ; Chinese Hamster ovary cells ; Disinfection byproducts ; Dissolved organic matters ; Electron-donating ; Electrophilic substitutions ; Formation potential ; Fourier transform infrared spectrum ; Solar irradiation ; Chemicals removal (water treatment) ; byproduct ; chlorination ; dissolved organic matter ; drinking water ; electron ; irradiation ; solar radiation ; toxicity test ; wastewater treatment ; water treatment ; Cricetulus griseus
英文摘要: After treated wastewater is discharged into surface water for unplanned indirect potable reuse, solar irradiation transforms the dissolved organic matter (DOM), which would alter the formation of disinfection byproducts (DBPs) and change the cytotoxicity formation potential (CtFP) during post–chlorination in drinking water treatment plants. This study investigated the effects of solar irradiation on the CtFP and total organic halogen formation potential (TOXFP) of wastewater during post–chlorination. Exposure to natural sunlight decreased the formation potential of cytotoxicity to Chinese Hamster Ovary cells. Under 24 h simulated solar irradiation, CtFP and TOXFP decreased by more than 40%. X–ray photoelectron spectra and Fourier transformation infrared spectra suggested solar irradiation destroyed the key DBP precursors containing phenolic hydroxyl moieties (Ph–OH). The destruction of Ph–OH under solar irradiation was reflected by a decrease in the electron donating capacity (EDC) of DOM and the post–chlorination decreased the EDC further. Increasing the irradiation–consumed EDC abated the chlorine–consumed EDC, while the chlorine–consumed EDC was positively correlated to the CtFP and TOXFP by means of the electrophilic substitution–aromatic ring cleavage. Solar irradiation thus reduced the CtFP and TOXFP in wastewater during post–chlorination. This study revealed that solar irradiation decreased the risks of treated wastewater for unplanned indirect potable reuse and provided a strategy of controlling CtFP and TOXFP via reducing EDC of DOM in pretreatments. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112434
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China; Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing, 100084, China; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Institute, Shenzhen, 518055, China; School of Environment, Tsinghua University, Room 522, Beijing, 10084, China

Recommended Citation:
Du Y.,Wu Q.-Y.,Lv X.-T.,et al. Electron donating capacity reduction of dissolved organic matter by solar irradiation reduces the cytotoxicity formation potential during wastewater chlorination[J]. Water Research,2018-01-01,145
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