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Groundwater treatment plant for the remediation of chlorobenzene damage

Niederau (Meißen)

Ressources: Soil, Groundwater

Flow rate: 11 (m3/h)

Pollutants: Chlorobenzene, Iron, Manganese

Processes: Adsorption, Activated Carbon, Iron removal, Manganese removal, Precipitation, Gravel filtration, Pump and Treat

In operation since: Oct 2018

KF Company: Harbauer Berlin GmbH

723458 Meissen

To purify and drain the water while maintaining the specified discharge parameters of less than 2 µg / l chlorobenzenes, the chlorobenzenes contained in the water are removed from the groundwater by means of activated carbon adsorption in two pressure filters.

Furthermore, iron and manganese are dissolved in the groundwater to be treated. The dissolved iron and manganese are removed from the groundwater in two gravel filters in order to avoid clogging of the activated carbon filters by precipitating metal oxides.

Two primary sedimentation tanks upstream of the gravel filtration are used for the retention of any heavy phases that may occur and the possibility of sediment or sludge separation as well as for stabilizing the lime-carbonic acid balance and for pre-aeration.

The purified groundwater is discharged into the nearby surface water (Pechgraben) in the first rehabilitation phase.
In a second remediation phase, the pure water is then infiltrated into the soil via an infiltration rigole.

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