Ballast Waters Treatment Using UV/(H₂O₂+O₃) Advanced Oxidation Process with Heterosigma akashiwo, Pyramimimonas sp., and Escherichia coli as Indicator Microorganism

Abstract:

Introducing invasive species through ballast water is a specific pollution problem and has recently identified as one of the main concerns of Maritime Organizations. UV/(H2O2/O3) advanced oxidation process is a technological alternative to prevent this maritime pollution. In this present study, inactivation efficiency of the UV/(H2O2/O3) processes for ballast water treatment using Heterosigma akashiwo, Pyramimimonas sp. and Escherichia coli as indicator microorganisms was investigated. Compared with individual or combined two units processes using UV, H2O2 and O3, the UV/(H2O2+O3) process yield the highest levels of inactivation due to synergistic effects. In order to study the dynamic inactivation efficiency of equipment for stimulated ballast water treatment, the effects tests of the hydraulic residence time were conducted. The results indicated that the shorter hydraulic residence time had better inactivation efficiency. These findings have implications for the ballast water treatment.

• Periodical: Advanced Materials Research (Volume 663)
• Pages: 946-952
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.663.946
• Online since: February 2013
• Authors: Hong Huang, Hua Feng Yu, Guang Ming Liu
• Keywords: Ballast Water, Escherichia coli, Heterosigma akashiwo, Inactivation, Pyramimimonas sp., UV/(H₂O₂+O₃) Process

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