Clean Tunnel Air International AS was founded in year 1989, in Trondheim city of Norway. For over 30 years CTA has been a world leader in the development and provision of air purification for road tunnels. CTA has finished more than 20 air purification stations in more than 10 tunnels. The company mission is to develop, manufacture and market total systems for control of air pollution in road tunnels.
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CTA international specializes in designing,developing,manufacturing and installing turnkey electrostatic dust precipitation and gas removing systems.The company offers unique technology for minimizing space requirements in tunnel areas with high efficiency. Read more…
Air Purification stations can not only protect people’s health inside tunnel, but also protect outside environment, by removing harmful particles and gas discharged from exit of tunnel. It can improve visibility inside tunnel to avoid traffic accident. Read more…
CTA has in-depth knowledge of electrostatic filtration technology and applications, for minimizing bypass tunnel areas through high-efficiency filtration and high speed air flow. CTA is keeping working on the development of APS, and cooperates with universities to evaluate improvements, and develop part of our R&D. Read more…
CTA has a lot of experience in tunnel application. CTA has specialized APS design, including bypass, ceiling bypass, shaft, and ceiling mounted, to fit with different type of tunnel, after considering tunnel construction type, purpose of APS, space limitation etc. Read more…
CTA has more than 20 successful Air Purification Stations around the world, including Norway, Germany, Spain, South Korea, etc. Lærdal Tunnel is the world longest tunnel. M30 APS station is the world biggest single station in air flow volume. Read more…