HaJI, Pioneer of Water Treatment
for Nuclear Power
- Trying to strengthen its presence in overseas markets

Hankook Jungsoo Industries Co. Ltd. (HaJI), which has accumulated expertise on water treatment for the domestic nuclear power industry, has put more energy into exploring overseas markets with the aim of becoming a world-class water treatment company.
HaJI has supplied on a turn-key basis services related to water treatment facilities for domestic and foreign nuclear power plants, ranging from facility design, manufacturing, installment, and trial operation to efficiency tests since it did the job for the Kori nuclear power units 1 and 2.
HaJI's demineralized water treatment system, capable of producing ultra-pure water for nuclear power units, comprises of the raw water pretreatment system and demineralization system, meeting the stringent water quality requirements of the power generation systems. The system employs such latest technologies as Catalytic Oxygen Removal System (CORS), a system of lowering the dissolved oxygen concentration requirement for the secondary cycle to less than 10 ppb, and the Electronic Deionization System (EDS) (its brand name: MDI).
EDS is one of the representative technologies whose commercialization has been made by HaJI. The company has successfully obtained some 50 patents on water treatment both in Korea and abroad. EDS is furnished with all localized components and materials, is environmentally-friendly without chemical waste and large-capacity, and has a high -performance multi-module type. The system can be used in such diverse areas as nuclear power units, thermal plants, semiconductor factories, pharmaceutical plants and chemical factories. HaJI was awarded with the IR52 Jang Young-sil Prize for the development of EDS in September 2003.
HaJI churns out Condensate Polishing System (CPP), essential for stabilizing steam generators of nuclear power units, coping with a condenser leakage and normalizing initial start-up. CPP has employed its own technology, the Regeneration Method, dubbed "IMR II Process" aimed at preventing cross contamination in case of ion exchange resin regeneration. The Regeneration Method, an excellent technology that is held by only a few water treatment firms in the world, has proved to be efficient in its application for nuclear and thermal power plants, and HaJI has made a feat of developing the two-bed (Cation Bed + Mixed Bed) type CPP, suitable for domestic nuclear power plants.
HaJI also supplies all water treatment equipment related to thermal power plant systems, including Electro Chlorination System, Chemical Feed System and radioactive waste filters.
The company has expertise with world-class manpower of about 150 engineers and researchers in the water treatment area. It has focused on research on producing environmentally-friendly and competitive products with the aim of striving for a world-class water treatment company.
Besides its own research, HaJI is conducting collaboration research activities with business and research circles. In particular, the company is actively participating in leading technology development projects and research on water treatment in collaboration with KEPCO Technology Research Institute and universities. Their collaborative research areas ranges range from the membrane sector - Electro Dialysis Membrane, reserve Osmosis Membrane and Ultra Filtration Membrane - , and bio Denitrgoen System to radioactive waste. Capitalizing on its accumulate experience and expertise related to nuclear and thermal power plants, HaJI has performed overseas projects including Phalai Thermal Power Plant in Vietnam, Hartha Al-Musaib Thermal Power Plant in Iraq and Terengganu Gas Station in Malaysia and Misurata power plant in Libya.
HaJI has landed turn-key orders on water treatment equipment for Ling Ao Units 1 and 2, the second phase of the Gwangdong Nuclear Power Development Plan, outbidding global powerhouses. The company is seeking to actively make a foray into the Chinese nuclear power market.
HaJI is now supplying water treatment equipment to the Dah-Tarn Thermal Power Plant operated by Taiwan Power Company (TPC) and Zawia CCPP and Benghazi CCPP in Libya. The company is exploring ways to strengthen its overseas present in the water treatment equipment sector. nw