Sludge Level Measurement Groundwater Treatment

Flowing Waters - Irrigation & Drainage Systems


  • Multi-stage container plant
  • Chamber size 2.4 x 2.9 x 12.2 m (w x h x d)
  • Aerated, limed groundwater with approx. 80 mg/l iron ochre contents
  • Built-in lamella filters

Definition of tasks

  • Continuous detection of iron hydroxide sedimentation level from 10 filter chambers
  • Robust measurement system, insensitive to pollution, operating well and reliable in high iron ochre concentrations
  • Variably adjustable limit values for automatic sludge discharge control


  • An ultrasonic system with separation layer measurement based on the detection of density layers was selected.
  • The NivuScope Ns2 with 2-channel transmitter and large graphic display was selected.
  • The sensors were inserted into the single chambers from the top using variable immersible fittings made of stainless steel.


  • One transmitter for 2 measurement points
  • Large graphic display for optimum signal analysis during measurement setup

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