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Industrial wastewater treatment plant for Frigemo

Process and control technology for one of the most modern industrial wastewater treatment plants

Frigemo AG processes more than 50,000 tons of Swiss potatoes each year into French fries, hash browns and other potato specialities. This produces wastewater with various types of impurities. Some 400,000 m3 of wastewater with organic or mineral impurities are cleaned annually in the company’s wastewater treatment plant. Since the existing system no longer met the demands and requirements for environmental protection, safety and performance, it was replaced with a new construction. The heart of one of the most modern industrial wastewater treatment plants with an aerobic preliminary stage for biogas production was planned and installed by Bouygues E&S Process Automation: The process and control technology.

The control system regulates and controls the entire wastewater treatment process, all the way to the receiving waters, by means of a programmable logic controller (PLC) and a superordinate process control system (PCS). Thanks to the standardised procedure and intensive in-house testing on Bouygues’ own test system, commissioning was completed quickly and smoothly.


Frigemo AG

Process and control technology for industrial wastewater treatment plant

Project planning, engineering, installation and commissioning of process and control technology, training