Optimising ion exchange column operation Efficient removal of brine after regeneration

Curing dead zones in lower part column

Brine removal after resin regeneration was calculated and optimised. The density of the brine solution is much higher than that of water. In the original configuration, brine severely interfered during operation after regeneration. Different geometrical adaptations were tested. The period of salt flushing out could be significantly shortened.

Major findings

  • Lower part of column contained dead zones
  • Brine washed out slowly during normal operation
  • Geometrical improvements significantly lowered impact of brine

Improving mixing in large WWTP

CFD Activated Sludge WWTP

Improving aeration in a WWTP

CFD Activated Sludge WWTP

Secondary settler optimisation

Secondary Settler CFD-PBM

Quantifying N2O emission in WWTP

CFD N2O WWTP Activated sludge

Design of a crystalliser

Crystalliser design CFD struvite

Improving mixing in a water reservoir

Drinking Water Reservoir Flow Pattern