Level sensor for electroplating installations

Case Study at a glance

Handling of different substances
Special requirements due to varying densities
Design of a new electroplating installation using the mono-sludge process
Durable and precise STÜBBE measurement valves were integrated in the installation

The challenge

Different substances and densities

In contrast to the conventional mixed sludge method, which is used by almost 90% of electroplating companies today, LPW Blasberg decided to use the mono-sludge process when planning their electroplating installation.

The customer's concerns regarding higher investment costs due to the mono-sludge process were allayed by an amortization analysis.

The mono-sludge process has advantages due to the increasing scarcity of raw materials, allowing the raw material-laden waste to be returned to the disposal companies at a better price,
as the raw materials no longer have to be separated in a laborious process.

As mono-sludge processes make it impossible to collect all wastewater types together, there are special requirements for the system components:

Different volumes of wastewater depending on the throughput
Wastewater with varying densities
Continuous monitoring of incoming and outgoing wastewater

The STÜBBE solution

The hydrostatic level sensor HFB

Determines the level by measuring the hydrostatic pressure
Suitable for substances prone to foam generation
Level measurement up to a water column of 5 m
Sensor system not in contact with the substance

TO THE RESULT

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The result

Continuous monitoring of the filling level

Installing the HFB on the collection containers made it possible to continuously monitor the filling level. This, in turn, made it possible to monitor whether more wastewater arrives than flows out through the wastewater treatment system. This information is essential for reducing the production throughput if necessary to avoid overfilling the containers.

The maximum filling level of the HFB is set so that there is still sufficient space for the neutralizing agent in the collection container at the lowest density.

Should the density of the wastewater increase for process reasons, the HFB reduces the maximum filling level to ensure sufficient space for the larger volume of neutralizing agent.

Another advantage of the HFB is that the system is not in contact with the substance, which prevents possible deposits on the sensor system.

Products of this Case Study

More about

Filling level and temperature sensor HFT

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STÜBBE level sensor for electroplating and water treatment