News
Sino-Swiss Sustainability Forum 26.07.2021
“Nothing is softer or more flexible than water, yet nothing can resist it.” -- Lao Tzu Water is life. Floods, shortages or contamination are significant risks to our urban existence. Good management of this key resource between...
HOLINGER is using battery-operated ultrasonic sensors with LoRaWAN (Long Range Wide Area Network) transmission technology to calibrate a conceptual model in the municipality of Dürnten. Since June 2021, we have been collecting...
The Tübingen wastewater treatment plant, one of the first wastewater treatment plants in Baden-Württemberg, has been upgraded with a fourth purification stage which has now been put into operation. In a fascinating and...
HOLINGER has already been able to implement many exciting projects with the municipality of Weggis. We would like to thank the municipality for its confidence in us and for its consistently pleasant collaboration. HOLINGER is...
The ground-breaking ceremony for the implementation of flood protection measures on the Schäflibach took place in the municipality of Urdorf on 19 May 2021. The plan calls for a slight widening of the brook's bed; in addition,...
HOLINGER recently coordinated the maintenance of the agitators in the digesters at the MARIN WWTP. After consulting with HOLINGER and the manufacturer of the agitators, the client opted for an overhaul over replacement. Before...
Good handling of rainwater 07.06.2021
At the end of April 2021, we launched an initiative to gather a collection of examples on the subject of "Good handling of rainwater”. With the cities of Basel, Bern, Lucerne, St. Gallen, Winterthur and Zug participating in the...
A good two years ago, a powder activated carbon (PAC) direct dosing system was successfully put into operation at the Flos WWTP. The operational experience shows that directly dosing PAC is a reliable approach and that trace...
In-stream revitalisation Witibach Grenchen 22.03.2021
Downstream of the residential area and alongside the airport, the Witibach runs along a monotonous, partially hard-banked channel. Due to limited space, 1.5 km of this river was revitalised using in-stream measures in the context...