Improving flow patterns in a large drinking water reservoir Making retrofit decisions

Quantifying flow velocities

A large water reservoir was modeled using CFD to improve water quality. Non-uniform discharge, dead zones and partly long residence time caused the deterioration of the water quality. Possible structural measures were evaluated to improve the general flow behaviour in the reservoir.

Major findings

  • Original flow pattern contained large dead (stagnant) zones
  • Non-uniform hydraulic residence time
  • Implementation of an internal wall resulted in positive impact on the flow pattern

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

Ion exchange optimisation

Ion Exchange CFD Optimisation

Design of a crystalliser

Crystalliser design CFD struvite