Vietnam: Hanoi City, North Thang Long Water Treatment Plant

Thang Long Industrial Complex was built in Hanoi in the late 1990s as part of promotion of industrialization in Vietnam. This project enhanced Japanese manufacturers' opportunities to start productive activities in Vietnam. To promote such direct investment from overseas and at the same time to achieve reliable livelihood of surrounding residents, development of basic infrastructure became an important issue.

Raw water which derives from groundwater that is fed to the North Thang Long Water Treatment Plant contains exceptionally high levels of iron and manganese, unusual raw water condition in Japan.
To ensure such compounds to be removed, after thorough field studies, Swing Corporation proposed to apply the treatment process of Aeration, Coagulation-Sedimentation and Manganese Sand Filtration.
As filtration system, GreenLeaf Filter (Siphon type self-backwashing rapid sand filter), most widely used in Japan, has been adopted, considering the power supply conditions in Vietnam. This system is equipped with filtration and self-backwashing mechanism utilizing water level difference, contributing to energy saving.

Construction of basic infrastructures, including this water treatment plant, led to many major Japanese companies to enter and start production in Thang Long Industrial Complex. This also significantly promoted urban development in the surrounding areas.
Swing Water Vietnam Corporation, subsidiary of Swing Corporation, is contributing to the training of operation engineers through supporting proper management of the facilities.