常州大学学报（自然科学版）2024，Vol.36Issue(6)：54-62,9.DOI:10.3969/j.issn.2095-0411.2024.06.007
臭氧工艺中藻细胞的去除和藻源有机质行为研究
Removal of algal cells and behavior of algal organic matter in ozonation process
摘要
Abstract
To explore the characteristics of algal removal and fate of algal organic matter(AOM)dur-ing 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 al-gal 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 de-stroy 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 regula-ted according to the turning point in the trend of the characteristic fluorescence of biopterins with ozone dose.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Key words
ozonation process/natural organic matter/flow cytometer/algal organic matter/humic-like fluorescence分类
资源环境引用本文复制引用
左延婷,陈家立,蒲良桃,杜尔登,彭明国..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(6):54-62,9.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). （BE2022426）
