Simulation and Optimization of the Combined High-Gradient Magnetic Separation-Ultraviolet Photocatalysis (HGMS-UV/TiO2) System for Ballast Water Treatment

• DOI: 10.1166/sam.2022.4259
• Publication Date: 2022-09-22T04:34:11Z
• Authors: Xiaolei Liu; Zheng Lu
• Keywords: Ballast; Ultraviolet

Ballast water has a negative impact on marine environment; the existing combined ultraviolet (UV) filtration system that for treating ballast relatively low effective rate and instability in inactivating microorganisms. In this study, established high gradient magnetic separation-ultraviolet photocatalysis (HGMS-UV/TiO 2 ) was taken, back propagation (BP) neural network TracePro used to simulate analyse UV field intensity optimizing. Further experimental verification carried out with seawater sample measure its inactivation effects microorganisms including zooplankton, phytoplankton bacteria. The results showed HGMS-UVC/TiO had good effect zooplankton bacteria, but poor phytoplankton. optimal strategy optimizing further obtained, it is concluded after adding A (UVA), distribution of more uniform, average illumination also improved, optical path should not be too long. optimized could increase intracellular K + leakage cells by than 25%, indicating damage cell membrane permeability stronger. conclusion, HGMS-UVA/UVC/TiO can improve capacity provide basic theoretical support improving level treatment water.