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Construction of 5 exhaust air purification plants

Schwarze Pumpe

Ressources: Groundwater, Air

Flow rate: 45 (m3/h)

Pollutants: Benzene, H₂S

Processes: Adsorption, Activated Carbon

In operation since: Aug 2013

KF Company: Harbauer Berlin GmbH

723407 Schwarze Pumpe

For this purpose, the contaminated raw air is introduced directly into a container filled with granulated iron hydroxide.

In this iron hydroxide filter, the H2S is directly removed with the formation of iron sulfide. In the lower part of the filter there is a gravel support layer, which is soaked in water. The capillary action of this support layer and the GEH ensure the necessary moisture in the container. The pretreated air is then heated in an air heater so that a relative humidity of about 60% is achieved. This ensures optimum adsorption of the benzene on the activated carbon in the air.

The exhaust air purification is operated by a downstream side channel compressor, which maintains a volume flow of about 45 m3/h.

The frost-sensitive area is housed in a heated container, which prevents the GEH filter from freezing at sub-zero temperatures.

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