环境保护科学2024，Vol.50Issue(6)：98-103,6.DOI:10.16803/j.cnki.issn.1004-6216.202310038
低频率超声波对蓝藻生长抑制及细胞结构影响
Effect of low-frequency ultrasound on growth inhibition and cell structure of cyanobacteria
摘要
Abstract
Cyanobacterial blooms is a prominent water environmental problem worldwide.Ultrasonic algae control technology has advantages of simple operation,cost efficiency and no secondary pollution,among which low frequency ultrasonic is the main application direction.To explore the optimal operating parameters of low-frequency ultrasound for algal control and its impact on water quality safety,the inhibitory effect of low-frequency ultrasound on Microcystis aeruginosa at different frequency ranges,treatment times,and action modes were studied.The sensitivity of different cyanobacterial species to low-frequency ultrasound treatment was compared,and the changes in cellular morphology,structure,and the release of microcystin after low-frequency ultrasound treatment were analyzed.The results showed that for M.aeruginosa,the optimal frequency range was 20～35 kHz(power density of 0.008 W·mL-1),with action mode of 2 times,each time lasting for 3 min with a 24-hour interval,the removal rate was approximately 93.55%.Spherical unicellular cyanobacterial species(Chroococcus sp.)was more sensitive to low-frequency sonication compared to filamentous cyanobacterial species(Phormidium sp.and Oscillatoria sp.).After ultrasonic treatment,the surface of M.aeruginosa cells became wrinkled,and the intracellular photosynthetic lamellae were damaged,but the cell remained intact,and the release of microcystin was not detected.The above results showed that low-frequency ultrasound could effectively control algae and ensure water quality safety at the same time.关键词
蓝藻水华/铜绿微囊藻/低频率超声波/生长抑制/微囊藻毒素Key words
cyanobacterial blooms/Microcystis aeruginosa/low-frequency ultrasound/growth inhibition/microcystin分类
资源环境引用本文复制引用
张宇,陈菁菁,朱广峰,沈浙萍,任旭锋,朱亮,谭映宇,徐敏达..低频率超声波对蓝藻生长抑制及细胞结构影响[J].环境保护科学,2024,50(6):98-103,6.基金项目
浙江省基础公益研究计划项目(LGF21E090001) （LGF21E090001）
浙江省科技计划项目(2023C03131) （2023C03131）
浙江省生态环境科研和成果推广项目(2020HT0008) （2020HT0008）
