Advanced modelling solutions for the water and environmental industry

Schone waterlopen door O3G.

The Wervershoof digital twin: virtual ozonation plant for real-time prediction and training

Mixing in large drinking water reservoirs: CFD project at water-link

CFD was used to optimise mixing (remove dead zones, avoid short-circuiting) in a large drinking water storage basin for surface water, preventing blue algae blooms and stratification.

Improving water quality and reducing energy consumption for Pidpa’s water towers

CFD modelling (computational fluid dynamcis) was used to model different drinking water reservoirs in 3D. Water aging and bacterial regrowth were assessed. Risk on aeromonas growth was reduced by optimal hydraulic residence time distribution.

Sustainable water treatment thanks to new ozonation technology

PureBlue Water partners with us to build a virtual digital win of their technology that combines ozonation with biological purification.

How six weeks of simulation replaced one year of ozone piloting

AMOZONE was used to virtually pilot ozonation for trace organic contaminant removal in this wastewater treatment plant in the Netherlands. No onsite testing was needed to assess performance and cost.

Predicting and minimising bromate formation in indirect potable reuse with AMOZONE - the SWIFT project (US)

The AMOZONE simulation model predicts bromate formation, suppression and target contaminant removal (eg 1,4-dioxane) during ozonation for indirect potable reuse (HRSD, SWIFT)

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.

Sand filter design and standardisation using CFD

Computational fluid dynamics (CFD) was used to simulate rapid sand filtration to help our drinking water treatment customer Vitens with design standardisation. Both filtration and backwash cycles (air/water/sand) were simulated at full-scale in 3D.

3D CFD simulation of large drinking water basins and a plant-wide digital twin

Optimal design of inlet and aeration in drinking water storage basin using computational fluid dynamics (CFD) modelling. Aeration was taken into account. Multiphase CFD simulation of air and water. Shortcircuiting and dead zones avoided.

The digital twin of the Linköping ozonation plant (Sweden)

A full digital copy of the real Linköping ozonation plant was built to predict pharmaceuticals removal. Different ozone dosing strategies were tested to maximise removal and minimise costs.

Large reservoir mixing: CFD-based improvement (Netherlands)

Optimal design of inlet and aeration in drinking water basin using computational fluid dynamics (CFD) modelling. Aeration was taken into account. Multiphase CFD simulation of air and water. Shortcircuiting and dead zones avoided. Optimal hydraulic reside

CFD-based MBBR and IFAS design

Ozonation reactor design based on CFD and CFD-kinetics

Anaerobic digestion CFD simulations for optimal mixing

Anaerobic digester design optimisation using Computational Fluid Dynamics (CFD) accounting for sludge rheology and viscosity. Dead zones and mixing optimisation (impeller type and reactor).

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.

Saving scale-up cost and effort and designing more effectively - Novel MBR concept

Computational fluid dynamics (CFD) is a powerful tool for membrane bioreactor (MBR) design, optimisation and scale-up. Aeration, baffles, membranes, inlets were optimised. Shear on membranes due to air scouring was quantified.

Optimal design of pellet softening reactors

Optimal design of pellet softening reactors using computational fluid dynamics (CFD). Optimal CaOH (calcium hydroxide; lime) dosing. Equal fluidization. Smaller reactor size, optimal pellet size distribution, avoid shortcircuiting.

Optimal inlet and outlet design was critical for process performance

This novel A-stage process was designed using computational fluid dynamics (CFD). Inlet and outlet pipes were designed, optimal sludge blanket fluidization, primary sludge solids wash out prevented.

Activated sludge tank - Quantifying nitrous oxide emissions combining CFD and biokinetics

Greenhouse gas emissions from wastewater treatment plants (WWTPs) can be signifcant. Computational fluid dynamics (CFD) was used to reduce emission and optimise oxygen transfer. N2O was local phenomenon.

Saving on operational costs while improving effluent quality by optimising propeller and aerator configuration

Computational Fluid Dynamics (CFD) was used for optimal bioreactor aeration design and saving energy by switching off mixers. Multiphase CFD modelling (air bubbles and water). Resulted in lower effluent nitrate, better effluent quality.

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

Saving scale-up cost and effort - Novel ozonation reactor for wastewater treatment

A novel ozonation system for industrial wastewater treatment was designed using computational fluid dynamics (CFD). Reactor and nozzle design. Optimal ozone transfer. 2-phase CFD modelling of ozone gas and water.

Optimal pure oxygen mixing and transfer

Computational fluid dynamics (CFD) was used to optimise mixing and pure oxygen transfer in industrial wastewater treatment. Two pure oxygen injectors were supplied by Air Liquide (Ventoxal). Dead zones cured and optimal mixing obtained.

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.

World's most validated bioreactor CFD model - Why our proprietary model is highly accurate, and how we proved it

Validation of CFD model at full-scale WWTP using dissolved oxygen (DO) profiling and velocity measurements. Model fit with DO data was excellent. Denitrification and nitrification were included in the WWTP CFD model.

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

Design of a crystalliser - Urine treatment for phosphoruous recovery via potassium struvite precipitation

This crystallisation process was designed using computational fluid dynamics (CFD). Baffle, mixer (impeller) type and speed, reactor configuration was optimised using 3D multiphase cfd modelling. This was a struvite reactor.

Optimising ion exchange column operation - Efficient removal of brine after regeneration

Computational fluid dynamics (CFD) was used to simulate ion exchange regeneration with brine. Brine wash out could be optimised, shortening the cycle time. Project together with Evides industriewater (Netherlands).

Secondary settler (clarifier) design optimisation with CFD

Secondary clarifiers (or settlers) can be optimised using computational fluid dynamics (CFD). Inlet structure (energy dissipation well) and sludge removal mechanism can be designed using sludge solids and liquid modelling using density currents.

CFD-based design of dissolved air flotation

UV and UV/H2O2 CFD and kinetic simulation

Assuring equal flow distribution

Equal flow distribution in an influent channel is critical for treatment process performance in both drinking water and wastewater. Computational fluid dynamics (CFD) was used to optimise pipe and channel design and assess flow rates