Maximising the air scouring performance of novel membrane modules

Membrane scouring of novel flat sheet membrane modules was optimised using computational fluid dynamics (CFD). Shear stress on membranes for fouling prevention was quantified by CFD. Increased viscosity (rheology) due to high MLSS (activated sludge concen

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Our client, the Belgian company Blue Foot Membranes has commercialised the IPCTM ('Integrated Permeate Channel') membrane: a fully backwashable flat sheet membrane. We used advanced 3D modelling to optimise the air scouring over the membranes and across the module. Eight different virtual prototypes with varying aerators and aerator configurations were evaluated within a few weeks without the need to build and test physical prototypes. (full article available on this topic)

Membrane design factors to consider for microfiltration, ultrafiltration design

The model accounted for:

Fine and coarse bubble aeration
High sludge concentration
Fow patterns (i.e. shear) along the membrane surface

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Chemical dosing

Optimal coagulant dosing in primary treatment of WWTP Auckland, New Zealand

Coagulant dosing in primary sedimentation tanks and grit tanks was optimised using computational fluid dynamics (CFD). Watercare's wastewater treatment plant (WWTP) of Auckland, New Zealand was retrofitted. Mixing and flow distribution.

Final Storage And Disinfectation

Design a drinking water storage basins

Computational fluid dynamics (CFD) was used to design a new drinking water storage basin. We saved CapEx and could avoid dead zones. Final design has optimal plug flow and hydraulic performance.

P Removal

Leading edge EBPR modelling - globally unique

EBPR was simulated using CFD (Computational Fluid Dynamics) for design of activated sludge fermentation (volatile fatty acids, VFA),nitrate poisoning) reactor design. Assessment of intermittent mixing, sludge blanket.

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