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Disinfection characteristics of an advanced rotational hydrodynamic cavitation reactor in pilot scale
Abstract
Hydrodynamic cavitation is a promising technique for water disinfection. In the present paper, the disinfection characteristics of an advanced hydrodynamic cavitation reactor (ARHCR) in pilot scale were studied. The effects of various flow rates (1.4–2.6 m3/h) and rotational speeds (2600–4200 rpm) on the removal of Escherichia coli (E. coli) were revealed and analyzed. The variation regularities of the log reduction and reaction rate constant at various cavitation numbers were established. A disinfection rate of 100% was achieved in only 4 min for 15 L of simulated effluent under 4200 rpm and 1.4 m3/h, with energy efficiency at 0.0499 kWh/L. A comprehensive comparison with previously introduced HCRs demonstrates the superior performance of the presented ARHCR system. The morphological changes in E. coli were studied by scanning electron microscopy. The results indicate that the ARHCR can lead to serious cleavage and surface damages to E. coli, which cannot be obtained by conventional HCRs. Finally, a possible damage mechanism of the ARHCR, including both the hydrodynamical and sonochemical effects, was proposed. The findings of the present study can provide strong support to the fundamental understanding and applications of ARHCRs for water disinfection.
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Authors (10)
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Xun Sun
- Shandong University, Jinan 250061, China
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Zhengquan Wang
- Shandong University, Jinan 250061, China
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Xiaoxu Xuan
- Shandong University, Jinan 250061, China
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Li Ji
- Shandong University, Jinan 250061, China
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Xuewen Li
- Shandong University, Jinan 250061, China
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Yang Tao
- Nanjing Agricultural University, Nanjing 210095, China
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Shan Zhao
- Shandong University, Qingdao 266237, China
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Joon Yong Yoon
- Hanyang University, Ansan 15588, Republic of Korea
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Songying Chen
- Shandong University, Jinan 250061, China
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Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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ULTRASONICS SONOCHEMISTRY
no. 73,
ISSN: 1350-4177 - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Sun X., Wang Z., Xuan X., Ji L., Li X., Tao Y., Boczkaj G., Zhao S., Yong Yoon J., Chen S.: Disinfection characteristics of an advanced rotational hydrodynamic cavitation reactor in pilot scale// ULTRASONICS SONOCHEMISTRY -Vol. 73, (2021), s.105543-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ultsonch.2021.105543
- Verified by:
- Gdańsk University of Technology
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