Micro Pollution

High performance technologies to beat micro pollutants

Micro Pollutants are contaminants in the waste water such as pharmaceuticals or left overs thereof, hormones, cosmetics, additives from foodstuff and herbicides etc. The collective term describes a broad range of substrates which will affect microorganism biochemically even at low concentration of a few Nano gram to microgram per litre of water. Tens of thousands of chemicals are known. Some of them hamper the reproduction of fishes or cause malformations in amphibians. Residuals from herbicides impair the photosynthesis of algaes and hence influence complete life cycles.
Conventional waste water treatment plants reduce/eliminate readily degradable organic substances as well as the nutrient matter Phosphor and Nitrogen efficiently. Various particles can be chemically bound and removed.

Many micro pollutants however remain dissolved in the effluent water, they can only be decomposed very slowly. That’s why they flow from the WWTP to the discharge system, the ground water and ultimately into the drinking water.

BSH has vast know-how with applications of Activated Carbon for the adsorption of contaminants in gas and in liquids in cleaning of gases or waste water. The associated filtration is also a unit operation often employed in our processes. That’s why BSH in 2013 made micro pollutants issue Nr. 1 of the R&D efforts. After basic investigations in our laboratory, we built a demonstration plant (capacity 30 m3/h) and successfully tested it in WWTP Mannheim and in WWTP Surental in Triengen (Lucerne, Switzerland).


If you need more information, please contact our head of process department.

Personal Contact

André Schöpf

dipl. Chem. Ing. ETH
Implementation / Process

Phone +41 41 925 70 27

Mail andre.schoepf@bsh.ch