Jongia agitator lifted out at WWTP Venlo while mixing continued
At WWTP Venlo, Jongia lifted one of the two agitators out of the sludge mixing tank in one piece, for preventive maintenance and as a proof of concept. The plant kept running.
In 2025, Jongia Mixing Technology supplied and installed two agitators on the sludge mixing tank of Waterschap Limburg’s wastewater treatment plant (RWZI) in Venlo, through civil contractor GMB. Both are type LB-125, built entirely in stainless steel 316L. Right from the start of the project, the water board set a clear design requirement: the agitators must be removable from the tank in one piece.
Built to come out
Both agitators stand on a bridge over the tank. That bridge is built so that each agitator can be hoisted out at any time — for regular or preventive maintenance, but also in an emergency. On Tuesday, October 27, 2026, Jongia put that requirement to the test. One agitator came out of the tank in one piece, both as preventive maintenance and as proof that the design works in practice.
Minimal downtime
During the lift, the second agitator stood still only briefly. Apart from that, the mixing process ran without interruption, and the plant kept operating largely undisturbed. That is the redundancy the tank was designed for. With two agitators, one can be out of service for maintenance or after a failure without bringing the process to a standstill.
For the plant, this means preventive maintenance can go ahead while the sludge keeps being mixed. In Venlo, downtime was limited to that one short stop.
- Proof of concept – agitator lifted out in one piece, as the water board required
- Minimal downtime – the second agitator stood still only briefly
- Process continuity – the plant kept running largely undisturbed
Preventive maintenance on both agitators
Once the agitator was back on the tank, Jongia carried out preventive maintenance on both agitators, including vibration checks and a check of the bearing lubrication. Both are ready to keep going until the next scheduled service.
Planned maintenance is central to Jongia’s service approach: it reduces downtime and extends the lifespan of mixing equipment. Jongia tailors its service contracts to the needs of each installation, and after every service intervention the customer receives a detailed digital report on the condition of the equipment. An agitator is the heart of the installation, and it should run smoothly at all times.
Want to know what preventive maintenance can do for your installation? Let Jongia help you and contact: [email protected]
Contact our specialized team for all your questions
Sales Director
Tom Pruymboom
Area Sales Manager
Teun van der Spek
Jongia's History
From the moment Jongia was founded in 1937 we have been evolving structurally over the years. Learn more about our company’s history with the summary of most important moments highlighted in a timeline.
