期刊
DESALINATION
卷 239, 期 1-3, 页码 191-197出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2007.12.035
关键词
Ultrasonic irradiation; Algae removal; Coagulation
资金
- National Program 863 of China [2002AA601140]
- Ultrasonics Science Foundation of China [50678047]
The effectiveness of ultrasonic irradiation on algae removal by coagulation was studied. Laboratory results suggest that ultrasonic treatment at 40 kHz and 60W for 15 s can improve algae coagulation removal by 12.4% as compared with direct coagulation. A photometric dispersion analyzer was employed to monitor the algae coagulation in this study. It is also indicated that variation in ultrasonic frequency does not have a notable effect on algae removal while increasing ultrasonic power to more than 60W produces a negative result. The optimal irradiation duration is determined as 15 s. In conclusion, ultrasonic irradiation-coagulation proves effective for algae removal. However, practical application still takes time due to certain limitations of the technique.
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