The dairy Mittelland Molkerei in Suhr in Switzerland is the biggest dairy of the whole region and belongs to the Emmi group. Emmi is the largest milk processing company in Switzerland. At the plant Emmi processes milk into butter, cream and drinking milk. A modern in-house waste water treatment plant treats the water before it is discharged into the municipal waste water plant.
The water quality gets measured with four s::can probes. One spectro::lyser is for controlling the chemical dosage of the precipitants and flocculants, the second probe monitors the influent to the production.
The third probe is for the tank washing system, at the inlet to the flotation where it measures the COD load. It triggers an alarm in case there is a leakage somewhere and larger quantities of milk product get discharged into the waste water.
Finally, the fourth probe is in the neutralization phase and is for controlling if the probes in the flotation are working properly and if the dosage is correct.