Heavy Metal­Precipitation b.i.o. Oberhavel

B.I.O. Oberhavel Heavy Metalprecipitation

Contaminated rainwater and process water are produced on the site of a floor cleaning plant. This is primarily contaminated by dissolved heavy metals as well as various hydrocarbons (HCs), adsorbable organically bound halogens (AOXs), aromatic hydrocarbons (BTEX-benzene, toluene, ethylbenzene, xylenes) and volatile chlorinated hydrocarbons (LCCs). To clean the groundwater, Harbauer has designed and built a cleaning system in a modular container design, in which different cleaning stages for the treatment of the pollutant mixture are combined.

A special feature of the water purification system is the modular structure of four steel containers, which are assembled on site into a walk-in building with a common roof. For this purpose, both the pipelines and the electrical engineering were designed as detachable connections between the containers. In this way, a water purification system could be realized that, on the one hand, can be set up as a stationary treatment unit, but on the other hand, can be set up and dismantled at short notice and with relatively little effort and transported in individual modules.

"Precipitation and flocculation of rainwater and process water containing heavy metals."

For the treatment of the complex pollutant mixture, the water purification plant combines different process stages. The main pollutant cargo in the form of dissolved heavy metals is removed from the rainwater and process water via fully automatic neutralization precipitation, chemical flocculation, subsequent sedimentation, and solid filtration. For the deposition of remaining heavy metal ions, a protective ion exchange filter follows. Hydrocarbon compounds are adsorbed from the water by means of activated carbon filtration. The purified rainwater and process water are collected in a pure water tank and finally fed to the service water circuit of the adjacent floor cleaning system.

Specifications and Pollutants

  water flow rate
  30 m³/h

  air flow rate
  Schwermetalle, KWs