Wednesday, May 20, 2020

New Technology Filter Cubes Drastically Cut Traffic Pollution Levels

Successful Trial Leads to Global Roll Out
Shipping News Feature

WORLDWIDE – Back in 2018 we published details of a trial taking place along the most polluted stretch of road in Germany, the Stuttgart Neckartor intersection, in which 23 Mann+Hummel filter cubes aimed to cut the high levels of particulate matter and hazardous gases. The results, showing drastically reduced levels of pollutants, have convinced municipal authorities and developers outside Germany to install the technology.

The cubes contain the enhanced Mann+Hummel combi filter layer, which retains particles, with additional activated carbon layers for adsorbing nitrogen dioxide. Highly porous activated carbon media are used which efficiently adsorb nitrogen dioxide due to their large surface area. The particularly low-pressure reduction means it can clean air efficiently while keeping energy usage low. Control electronics enable the user to adapt filter operation and to react to the current air quality.

At home in Heilbronn hazardous gases such as nitrogen dioxide will soon be minimised. Beginning in July 2020, 26 Mann+Hummel combi filters will be installed on a highly frequented section of road in Heilbronn city centre. The systems there are intended to help protect residents and passers-by from particulates that are harmful to health and to help avoid bans on diesel vehicles.

Now the technology is being taken up far and wide, with Jan-Eric Raschke, Director & Chief Product Owner Public Air Solutions – Mann+Hummel, explaining:

“More and more residents and municipalities are becoming aware of the dangers to health posed by high concentrations of air pollutants, like particulates. As specialists in filtration systems, we are using our expertise to help make the air in cities cleaner and thus improve the quality of life.”

In the South Korean capital Seoul, where the subject of particulate matter is increasingly becoming the focus of public attention, Samsung Everland wanted to offer improved air quality to visitors to its ‘Everland Resort’ and therefore installed eight Filter Cubes III in the leisure park’s entrance area in January 2020. The company also had two filter columns installed at a playground in a newly-build residential complex to protect children from particulate matter while they play.

In Indaiatuba, Brazil, an inland city with around 235,000 residents, four Filter Cubes were installed at the beginning of March. The filter columns will be used for a six-month study in the city centre, where there is a high concentration of bus and passenger traffic. The technology, which is completely new to Brazil in this form, filters 80% of particulates between 2.5 and 10 microns. There are also plans to extend the project to other Brazilian cities and metropolitan areas.

So far, 92 columns have been installed on three continents. In total, Mann+Hummel Filter Cubes clean 1.25 million m3 of air per hour worldwide. Filter Cubes can be used anywhere in the world where people are exposed to particularly high levels of particulate matter and nitrogen dioxide. In addition to the free-standing Filter Cubes, Mann+Hummel also provides filtration systems that can be integrated directly into bus stops or into advertising or information boards.

Photo: The filter cubes in situ in Indaiatuba, Brazil.