Public Air Solutions

Public Air Solutions

Nos solutions de filtration pour une meilleure qualité de l'air dans les villes

The challenge - polluted air in cities

Worldwide many city residents suffer from breathing in the high concentration of pollutants found in the ambient air. Sources such as traffic and industry cause high concentrations of particulate matter and nitrogen dioxide (NO2). In Germany and other countries, the exceedances of limit values are a constant source of discussion. In high traffic areas or places with large emissions and low air exchange, the exposure is especially high and the effect on human health is harmful.

This applies, for example, to busy streets and subway stations. People with respiratory illnesses, the elderly or children should not be exposed to high concentrations of particulate matter or nitrogen dioxide. Surrounding yourself with clean air is a quality of life necessity. In places where people are studying, working, shopping or spending their free time, it is important to be surrounded by clean air.

The European environmental authority EEA also points out this risk in its Air Quality Report 2018:

Our solutions for better air quality in cities

And this is how it works:

Filter Cubes provide clean air
at pollution hotspots

The modular MANN+HUMMEL Filter Cube helps to improve air quality in places with high air pollution - such as traffic junctions or busy roads. Even in particularly sensitive areas such as schoolyards, playgrounds or food courts, the use of Filter Cubes helps to efficiently reduce air pollutants. The Filter Cube technology can also be integrated into existing infrastructure such as bus stops or billboards (see Filter Grid and Filter Square).

The decentrally applicable Filter Cubes are able to bind more than 80 percent of the nitrogen dioxide (NO2), ozone (O3) and fine dust contained in the ambient air that is drawn in. The core of the technology is a newly developed combifilter, which includes a filter layer that retains particulate matter. Due to the large surface area of the additional highly porous activated carbon media, NO2 and O3 is adsorbed very effectively at particularly low pressure drop and energy consumption.

Depending on the requirements, using a modular system means a number of Filter Cubes can be installed on top of each other to form a filter column. A filter column with three Filter Cubes is able to clean 14,500 m³ of air every hour. The Filter Cubes are equipped with an intelligent mechatronic system architecture. Available sensors record air and weather data as well as the pollution level and transfer the data to a cloud. This way the filter system controls itself depending on operating and environmental boundary conditions and thus saves energy costs since the fan is only running when it is needed.
 

Scientifically proven effectiveness of Filter Cubes

Already in 2018, the effectiveness of MANN+HUMMEL Filter Cubes was confirmed in a joint study with KIT (Karlsruhe Institute of Technology). Meanwhile the effectiveness of a large-area installation of filter columns has been proven in long-term tests at the Neckartor in Stuttgart, Germany. This heavily frequented main road was for a long period of time one of the most polluted places in Germany by fine dust and harmful gases. More detailed information on the procedure and test setup can be found in the final report of the pilot project, which was prepared in consultation with the Baden-Württemberg Ministry of Transport.

Compared to other measures from cities' air pollution control plans, the installation of a Filter Cube network has been more successful than average. Actions such as converting the vehicle fleet to e-vehicles, expanding and promoting bicycle traffic and public transport, software updates and traffic management are all in the very low single-digit range in terms of nitrogen dioxide reduction. Only driving bans would be roughly equivalent to the effectiveness of the Filter Cubes, but they not only severely restrict delivery and commuter traffic, but also keep consumers away from city centers. Since the Filter Cubes clean the air without affecting the traffic flow, they are economy-friendly and at the same time protect residents and passers-by.
 

Exemplary process of Filter Cube installation

The first step of the project is the investigation of the surrounding area, which has particularly high levels of pollutants. Whether it is an open area on a busy road, an inner courtyard of a business district or a relatively closed subway station, our experts make calculations for each of these conditions and consider different measures. They check where the fine dust and NO2 pollution is highest and how the pollutants are spread through the air. Afterwards they determine how many Filter Cubes are needed and where they should be installed in the respective area. With the help of a simulation, these plans are determined internally and then checked by an independent engineering office.

A Filter Cube requires 1 m² of space and access to electricity. Depending on the location and customer requirements, a foundation and a data connection can be included. After the preparation of the infrastructure has been completed on site, the installation of the systems can begin. Thanks to an intelligent system architecture, the Filter Cube controls itself depending on the operating and ambient conditions. However, the operator can also control the units by remote control and access the system as required.

 

Technical datasheet          Proof of Effectiveness          Filter Cube Brochure

Reference Projects

Stuttgart Neckartor

Stuttgart Neckartor

GERMANY: Filter Cube installation at Neckartor, Stuttgart. Open atmospheric filtration field in a 250 m street segment with 23 Filter Cube II and III.

Everland Resort Theme Park

Everland Resort Theme Park

SOUTH KOREA: 8 Filter Cubes in the entrance area of the amusement park to improve customer service.

Bus stop in Indaiatuba

Bus stop in Indaiatuba

BRAZIL: Filter Cubes at the bus stop at Praca Dom Pedro.

Heilbronn Weinsberger Strasse

Heilbronn Weinsberger Strasse

GERMANY: Installation of 24 Filter Cubes III and 2 Filter Cubes I to protect residents and passers-by and avoid bans of diesel vehicles.

Shanghai at MANN+HUMMEL plant

Shanghai at MANN+HUMMEL plant

CHINA: Study project at MANN+HUMMEL Shanghai location in Xingqing Road, Jiading Industrial Zone.

Stuttgart Hohenheimer Strasse

Stuttgart Hohenheimer Strasse

GERMANY: Installation of 20 Filter Cubes II and III on a highly frequented street in the heart of Stuttgart.

Apartment Complex in Gajaeul

Apartment Complex in Gajaeul

SOUTH KOREA: Installation of two Filter Cubes to protect residents from the danger of fine dust, especially children while playing.

Stuttgart Pragstrasse

Stuttgart Pragstrasse

GERMANY: Installation of 10 Filter Cubes III to remove airborne pollutants from the ambient air at the busy street.

Bleyle Complex in Ludwigsburg

Bleyle Complex in Ludwigsburg

GERMANY: A school, kindergarten, medical center and various companies. The company WOLFF & MÜLLER intends to protect people against fine dust by using three Filter Cubes II.

Bengaluru at Cubbon Park

Bengaluru at Cubbon Park

INDIA: Study project at the Cubbon Park in Bengaluru, Karnataka.

Urban Harbour in Ludwigsburg

Urban Harbour in Ludwigsburg

GERMANY: Study project in Ludwigsburg. Filter Cube technology installed in a container at a busy road.

Ludwigsburg at MANN+HUMMEL plant

Ludwigsburg at MANN+HUMMEL plant

GERMANY: Study project at the MANN+HUMMEL headquarters in Ludwigsburg.

Indaiatuba at MANN+HUMMEL plant

Indaiatuba at MANN+HUMMEL plant

BRAZIL: Filter Cubes at the MANN+HUMMEL plant in Indaiatuba.

What the media say

A new vacuum cleaner filter

A new vacuum cleaner filter

Stuttgart sees the introduction of vacuum cleaners that can remove nitrogen dioxide from the air.

Vehicle Is A Filtered Chevy Bolt EV

Vehicle Is A Filtered Chevy Bolt EV

There are some transportation-related pollutants that you just can’t stop.

Now, a 'dust eater' in Cubbon Park

Now, a 'dust eater' in Cubbon Park

Cubbon Park now has a 'Dust Eater' which sucks in ambient air and releases purified air.

Hidden champion fights fine particles

Hidden champion fights fine particles

Germany's MANN+HUMMEL is working on technology to filter out the harmful dust.

MANN+HUMMEL presents technology to reduce NO2

MANN+HUMMEL presents technology to reduce NO2

Today, at its headquarters in Ludwigsburg, MANN+HUMMEL presented a technology which reduces nitrogen dioxide (NO2).

MANN+HUMMEL presents technology to reduce NO2

MANN+HUMMEL presents technology to reduce NO2

Today, at its headquarters in Ludwigsburg, MANN+HUMMEL presented a technology which reduces nitrogen dioxide (NO2).

Contact Persons

Thomas Michalak
Sales & Business Development Manager | Public Air Solutions
Laura Montag
Manager Corporate Relations / Spokesperson