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Optimal and fast design of novel A-stage technology

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Before Image
WastewaterFluidizationSludge blanket

The AAA settler

The AAA settler is a novel A-stage wastewater treatment technology developed by our client Dr. Bernhard Wett (Austria). The process consists of two alternating reactors that switch between feeding, aeration and settling regimes. Stable operation means:

  • No wash out of A-stage sludge
  • Homogeneous fluidization

At full-scale it is difficult and expensive to test different designs and it is hard to find the optimal configuration. AM-TEAM accelerated this process at the WWTP of Alta Badia, Italy. This ski area has varying loads and flow rates, which is challenging for design and operation.

Virtual piloting using a 3D CFD model

Within 2 weeks, different designs of the inlet and outlet structures were tested in 3D and an optimal configuration was found and implemented in practice one week later. The design changes could be tested prior to any investment. The performance of the implemented design is excellent.

Highly accurate full-scale model

We used a 2-phase model (water + sludge)  to visualise sludge fluidization and minimise risk on wash out. The model was validated based on on-site measurements and accuracy was very high.


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