Water samples containing Escherichia coli was treated by a hydrodynamic cavitation device with circular multi-orifice plates. The inactivation effects of hydrodynamic cavitation on Escherichia coli in water was experimentally studied by detecting the killing rate. The effects of initial concentration of Escherichia coli, cavitation number, orifice velocity, orifice arrangement, orifice number, orifice size and cavitation time on the killing rates were analyzed. The experimental results showed that increasing the orifice velocity, lowering cavitation number, choosing the appropriate initial concentration, improving the cavitation time, increasing the orifice number, decreasing the orifice size and improving orifice arrangement can further increase the killing rates of Escherichia coli in water.
刘昶, 董志勇, 陈乐, 张茜, 张凯. 圆孔多孔板水力空化杀灭大肠杆菌的实验研究[J]. 中国环境科学, 2016, 36(8): 2364-2370.
LIU Chang, DONG Zhi-Yong, CHEN Le, ZHANG Xi, ZHANG Kai. Experimental study of Escherichia coli killed by hydrodynamic cavitation due to circular multi-orifice plates. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(8): 2364-2370.
Doulahm S, Hammond T H, Brookman J G. A Hydrodynamic Mechanism for the Disintegration of Saccharomyces cerevisiae in an Industrial Homogenizer[J]. Biotechnology & Bioengineering, 1975,17(6):845-858.
Save S S, Pandit A B, Jos J B. Use of hydrodynamic cavitation for large scale microbial cell disruption[J]. Food and Bioproducts Processing, 1997,75(C1):41-49.
[8]
Save S S, Pandit A B,Joshi J B. Microbial Cell Disruption-Role Of Cavitation[J]. Chemical Engineering Journal and the Biochemical E, 1994,55(3):B67-B72.
[9]
Jyoti K K, Pandit A B. Water disinfection by acoustic and hydrodynamic cavitation[J]. Biochemical Engineering Journal, 2001,7(3):201-212.
[10]
Jyoti K K, Pandit A B. Effect of cavitation on chemical disinfection efficiency[J]. Water Research, 2004,38(9):2249-2258.
[11]
张敬威,张亚磊.初生空化数公式的优化研究[J]. 吉林水利, 2014(5):25-28.
[12]
Gogate P R. Cavitation: an auxiliary technique in wastewater treatment schemes[J]. Advances in Environmental Research, 2002,6(3):335-358.
