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Korea Institute of Ocean Science & Technology

KIOST supported development of seawater sterilization and neutralization system using its own specialized marine battery technology

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  • Date : 2021-07-21
Photo 1. Seawater Battery-based Hybrid Sterilization and Neutralization System.png 바로보기

Korea Institute of Ocean Science and Technology (KIOST) President Kim Woong-seo announced that the institute has provided technical support to Dongsung Precision Industry  Co., Ltd. for the development of a “Marine-Specialized Battery-based Hybrid Sterilization and Neutralization System,” which is the second achievement of the institute’s Regional Revitalization Project. 


Seawater batteries generate and store electricity using sodium (Na+) ions dissolved in seawater as the anode material and water as the cathode material. In this process, seawater desalination, sterilization, and hydrogen production also take place. Principal research scientist Baek Seung-jae has studied the sterilization function, among the many benefits of seawater batteries, and provided technical support to Dongsung Precision Industry Co., Ltd. for the development of a seawater sterilization/neutralization device.


There is growing need for a seawater treatment device to prevent the introduction of alien species through ships discharging ballast water in ports and for hygiene management at aquaculture farms and aquariums that use seawater. Sterilization methods include electrolysis, ozone spraying, and the use of chemicals. However, each of these methods has disadvantages, such as energy consumption and environmental impacts. The use of seawater batteries, however, makes eco-friendly seawater sterilization possible.


The recently-developed seawater battery-based sterilization and neutralization system is capable of sterilizing and neutralizing 200 liters of seawater in three hours and discharging seawater with a TRO (total residual oxidation) concentration of 0.5ppm or less. This system is expected to be used by medium-sized seawater facilities, such as aquaculture farms and aquariums, and wherever there is demand for large-scale seawater sterilization, such as for ballast water treatment equipment. In addition, the system makes it possible to monitor the sterilization and neutralization of seawater in real time, enabling efficient seawater management.


KIOST President Kim Woong-seo stated, “In Korea, where the aquaculture, shipping, and harbor industries are highly developed, sterilization technology developed using eco-friendly seawater batteries can be utilized in every field.” He went on to add, “We will spare no effort in providing KIOST’s human and material resources to support mutual prosperity with the local community.”




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Last Update : 2021-07-19