Application

• 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

Solution

• 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.