Adsorption is understood as the accumulation of substances from gases or liquids on the surface of a solid. In water treatment, trace substances are often removed from the water by attaching to a granular filter material.

Activated carbon

The activated carbon adsorption uses the large surface area of the activated carbon, which can be 400 to 1,600 m2 / g, depending on the type of coal. The contaminated water flows through the activated carbon bed. The pollutants accumulate on the surface of the activated carbon.
The loaded activated carbon is reactivated at the manufacturer's plant in an approved plant and can be reused. By reactivating and reusing the activated carbon, the costs can be kept low. Only in exceptional cases, e.g. at high pollutant concentrations, the loaded activated carbon cannot be regenerated. In this case, it must be disposed of properly and in an environmentally friendly manner.
  • Removal of (organic) trace substances
  • Decontamination


ROWAsorb is an adsorbent material based on granulated iron hydroxide. It is suitable for removing pollutants such as arsenic, copper, molybdenum, lead, antimony, uranium, vanadium, zinc or even phosphate or hydrogen sulfide from the water in a targeted manner. The adsorption capacity depends on the nature of the water and the operating conditions, so the treatment plants must be designed specifically for each individual case.
  • Removal of heavy metals
  • Removal of arsenic and antimony
  • Removal of dissolved organic substances