A progressive and efficient solution
Four older basins for collecting rainwater were replaced by two concrete basins having a maximum volume of 18,000 m³. Following heavy rains, these basins are drained after which the water mixture is processed biologically in the treatment plant. The problem is that a mix of organic and inorganic particulates always accumulates as sludge at the bottom of the basins.
- Two rainwater retention basins each with a length of 95 m and width of 45 m
- Max. water depth in basins: approx. 2.10 m
- Capacity of each basin: approx. 9.000 m³
The solution: Now after draining the basins, the Rosenbauer turrets, which were actually designed for stationary firefighting, use process water to flush the sludge into a central collecting channel from where it flows into the auger lift system. Four water turrets are installed per basin, each of which can be operated independently and controlled remotely or manually on-site. In addition to this, two automatic cleaning methods were implemented that allow the turrets to clean the basins on their own.
- Number of turrets per basin: 4
- Water flow rate reduced to 800 l/min
- Large throw range of over 50 meters
- 8 bar pressure at turret inlet
- Complete CAN-Bus networking of the turrets
- Rosenbauer remote control for manual operation
- Summer and winter operation
Benefits
- Fully automated cleaning process
- Time saving: 75 – 90 %
- Cost savings
- Reduces odor and noise pollution