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http://dx.doi.org/10.5394/KINPR.2004.28.10.955

Disinfection of harmful organisms for sea water using electrolytic treatment system  

Park Sang-Ho (Division of Civil and Environmental System Engineering, Korea Maritime University)
Kim In-Soo (Division of Civil and Environmental System Engineering, Korea Maritime University)
Abstract
The treated ballast water from previous treatment contains microorganisms and pathogenic organisms in an electrolytic treatment system. The experimental methods included using a peristaltic flow pump placed upward on an electrode pole. Due to the reaction time, the hydraulic retention time indicated unlike microorganisms on the flow rate. In electrolysis, dioxide iridium-coated titanium (Ti/Ir02) and stainless steel plates were used for the anode and cathode, respectively. Current density controls make use of a DC power supply on 250V, 100Amper. Experimental use of a current density between 0.1 and 1.0A/dm2 was able to disinfect the microorganism (E. coli, Bacteria, Bacillus sp.) in seawater for 5 seconds of reaction time. The removal rate was approximately $90\%,$ while the current density was 2.0A/dm2 and the electrode distance was 75mm. This study shows that the electrolytic treatment system has a potential for the sterilization of ballast water.
Keywords
Ballast water; Electrolytic Sterilization Equipment; current density;
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