Page 11 - Case study: Fine dust filtration in Stuttgart, Germany

• Pressure loss

• Particle count

Simulations conducted and estimated PM10 reduction

Simulations were conducted by a certified simulation laboratory to predict the PM10 reduction for
different wind directions and velocities, showing a strong influence of the wind direction. The design
was optimized to provide the most effective filtration results for typical local conditions:

• Wind from 222° (South-West)

• Low wind speeds of 1 m/s (10 m above ground)

• High traffic emission modelling representing the peak hour

Predicted PM10 reduction, when 50 μg/m³ PM10 are measured at public measurement station, i.e.:

• ~5 μg/m³ at public measurement station

• 5-15 μg/m³ in Western area (walkways)

• 10-15 μg/m³ in Eastern area (walkways)

• >15 μg/m³ in the proximity of the columns

Evaluation filter columns’ effectiveness at Neckartor

Concentration comparison was made between On and Off state, based on the following parameters:

• Baseline data: 30-minute average values by LUBW (note that this is preliminary, unpublished
data)

• Concentration change achieved by columns in operation

• Public measurement data shows that the predicted 10% decrease of PM10 concentration is
achieved.

2.2. Implementation

The following parties are involved in the project:

• The state capital of Baden-Württemberg, Stuttgart

• Ministry of Transport Baden-Württemberg

• MANN+HUMMEL

Fine dust filtration - Stuttgart, Germany 5