• Agriculture
• Biogas
• Waste water and sewage systems, environmental engineering
  • Mechanial and biological waster water treatment
  • Sludge dewatering and sludge drying
  • Process materials dosing (flocculents, polymers, milk of lime, burnt lime)
• Food and drinks industry
• Chemicals and paper
• Miscellaneous

Process materials dosing (flocculents, polymers, milk of lime, burnt lime)

Flocculents (iron and aluminium salts) and flocculation agents (organic polyelectrolytes such as polyacrylamide) are used to remove colloidal materials, fine dirt particles and phosphorus from waste water . The flocculents cause the substances in question to precipitate in the form of microflakes. The flocculation agents accelerate this cleaning process by inducing an electrochemical reaction which results in the microflakes joining together to form fast sinking macroflakes.

In addition, lyes or acids are pumped into the waste water for neutralization or pH adjustment purposes. Adding metallic salts, milk of lime and polyelectrolytes optimizes the dewatering of the sludge.

Whichever chemical agents are added, the important thing is the accuracy of dosing. This criterion is best met by WANGEN pumps from the KB series, preferably in high-grade steel design.