[1]左延婷,陈家立,蒲良桃,等.臭氧工艺中藻细胞的去除和藻源有机质行为研究[J].常州大学学报(自然科学版),2024,36(06):54-62.[doi:10.3969/j.issn.2095-0411.2024.06.007]
　ZUO Yanting,CHEN Jiali,PU Liangtao,et al.Removal of algal cells and behavior of algal organic matter in ozonation process[J].Journal of Changzhou University(Natural Science Edition),2024,36(06):54-62.[doi:10.3969/j.issn.2095-0411.2024.06.007]
点击复制

臭氧工艺中藻细胞的去除和藻源有机质行为研究()
分享到：

常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第36卷
期数:
2024年06期
页码:
54-62
栏目:
环境科学与工程
出版日期:
2024-12-03

文章信息/Info

Title:
Removal of algal cells and behavior of algal organic matter in ozonation process
文章编号:
2095-0411(2024)06-0054-09
作者:
左延婷; 陈家立; 蒲良桃; 杜尔登; 彭明国
常州大学 城市建设学院, 江苏 常州 213164
Author(s):
ZUO Yanting;  CHEN Jiali;  PU Liangtao;  DU Erdeng;  PENG Mingguo
(School of Urban Construction, Changzhou University, Changzhou 213164, China)
关键词:
臭氧工艺;  天然有机质;  流式细胞仪;  藻源有机质;  类腐殖质荧光
Keywords:
ozonation process;  natural organic matter;  flow cytometer;  algal organic matter;  humic-like fluorescence
分类号:
X 524
DOI:
10.3969/j.issn.2095-0411.2024.06.007
文献标志码:
A
摘要:
为了探究臭氧工艺处理含藻水时,藻细胞的去除和藻源有机质(AOM)的释放,明晰外源天然有机质(NOM)的影响,以铜绿微囊藻为研究对象,考察了不同臭氧投加质量浓度下藻密度和细胞膜完整性的变化,并基于溶解性有机碳、紫外-可见吸收光谱和三维荧光光谱分析技术对臭氧化过程中的溶解性有机物(DOM)进行了表征。结果表明,臭氧会破坏铜绿微囊藻的细胞膜,降低藻密度,导致细胞内生物蝶呤类腐殖质荧光有机物释放和氧化。NOM存在时,芳香性组分会优先消耗氧化剂,显著延缓藻细胞的破损和AOM的释放,但当臭氧质量浓度足以完全破坏藻细胞膜后,多余的臭氧会导致生物蝶呤类有机物释放与氧化,因此可以根据生物蝶呤类化合物特征荧光强度的变化调控含藻水处理过程中所需的臭氧质量浓度。
Abstract:
To explore the characteristics of algal removal and fate of algal organic matter(AOM)during ozonation treatment of algae-laden water with/without natural organic matter(NOM), the typical cyanobacteria strain causing blooms, Microcystis aeruginosa, was used to investigate variations of algal density and cell membrane integrity with dosing various concentrations of ozone. In addition, the dissolved organic matter in the ozonation process was characterized by dissolved organic matter(DOM), UV-vis absorption spectra and excitation-emission matrix fluorescence spectra. The results showed that ozone had the ability to disrupt cell membranes of Microcystis aeruginosa, reduce algal density, and lead to release and oxidation of intracellular biopterins with humic-like fluorescence. In the presence of NOM, its aromatic moieties preferentially reacted with the oxidant, causing significant delay in algal cells damage and AOM release. However, when the ozone dosage was sufficient to destroy algal cell membranes completely, biopterins would still undergo release and removal due to the excess oxidant. Therefore, the ozone dose required in algae-containing water treatment can be regulated according to the turning point in the trend of the characteristic fluorescence of biopterins with ozone dose.

参考文献/References:

[1] DU J Y, SHI X Y, WANG Y P, et al. Effects of chlorination on the nitrosamines formation from two algae species in drinking water source-M aeruginosa and C meneghiniana[J]. Chemosphere, 2022, 287: 132093.
[2] 陈慧娴, 王美娟, 陈萍, 等. 双十二烷基γ-双季铵盐杀生剂的杀藻性能及机制[J]. 常州大学学报(自然科学版), 2022, 34(5): 48-56.
[3] QI J, LAN H C, LIU R P, et al. Efficient Microcystis aeruginosa removal by moderate photocatalysis-enhanced coagulation with magnetic Zn-doped Fe3O4 particles[J]. Water Research, 2020, 171: 115448.
[4] 左延婷, 李爱民, 程士, 等. 蓝藻AOM特征与DBPs生成关系的研究进展[J]. 中国环境科学, 2021, 41(1): 421-430.
[5] 计杰, 施常洁, 李聪, 等. 南方某给水厂臭氧投加量优化及季节性高藻对DBPs生成影响分析[J]. 给水排水, 2022, 58(S1): 596-603.
[6] XIE P C, MA J, FANG J Y, et al. Comparison of permanganate preoxidation and preozonation on algae containing water: cell integrity, characteristics, and chlorinated disinfection byproduct formation[J]. Environmental Science & Technology, 2013, 47(24): 14051-14061.
[7] PIVOKONSKY M, NACERADSKA J, BRABENEC T, et al. The impact of interactions between algal organic matter and humic substances on coagulation[J]. Water Research, 2015, 84: 278-285.
[8] HUANG Y, CHENG S, WU Y P, et al. Developing surrogate indicators for predicting suppression of halophenols formation potential and abatement of estrogenic activityduring ozonation of water and wastewater[J]. Water Research, 2019, 161: 152-160.
[9] WU J, CHENG S, CAI M H, et al. Applying UV absorbance and fluorescence indices to estimate inactivation of bacteria and formation of bromate during ozonation of water and wastewater effluent[J]. Water Research, 2018, 145: 354-364.
[10] ZUO Y T, WU J, CHENG S, et al. Identification of pterins as characteristic humic-like fluorophores released from cyanobacteria and their behavior and fate in natural and engineered water systems[J]. Chemical Engineering Journal, 2022, 428: 131154.
[11] ZUO Y T, CHENG S, JIANG H H, et al. Release and removal of algal organic matter during prechlorination and coagulation treatment of cyanobacteria-laden water: are we on track?[J]. Science of the Total Environment, 2022, 824: 153793.
[12] CHENG S, WU J, ZUO Y T, et al. Developing a restricted chlorine-dosing strategy for UV/chlorine and post-chlorination under different pH and UV irradiation wavelength conditions[J]. Chemosphere, 2020, 258: 127393.
[13] 邢思初, 陈冠浩. 青草沙水源水厂深度处理臭氧投加量及发生器配置分析[J]. 净水技术, 2022, 41(11): 49-54.
[14] LI W T, XU Z X, LI A M, et al. HPLC/HPSEC-FLD with multi-excitation/emission scan for EEM interpretation and dissolved organic matter analysis[J]. Water Research, 2013, 47(3): 1246-1256.
[15] PLUMMER J D, EDZWALD J K. Effects of chlorine and ozone on algal cell properties and removal of algae by coagulation[J]. Journal of Water Supply: Research and Technology-Aqua, 2002, 51(6): 307-318.

备注/Memo

备注/Memo:
收稿日期: 2024-08-13。
基金项目: 江苏省重点研发计划现代农业-碳达峰碳中和科技创新专项资助项目(BE2022426)。
作者简介: 左延婷(1995—), 女, 安徽铜陵人, 博士, 讲师。通信联系人: 彭明国(1976—), E-mail: pmg@cczu.edu.cn
更新日期/Last Update: 1900-01-01