For 24 years - and running - Putzmeister technology has helped the Steinhäule sewage treatment...
For 24 years - and running - Putzmeister technology has helped the Steinhäule sewage treatment plant tackle sewage sludge and take one step closer to a greener environment.
The Steinhäule sewage treatment plant association was set up in 1984 and its members include 11 towns and communities around Ulm/Neu-Ulm in Southern Germany. It currently employs around 50 people. Around 40 million cubic meters of wastewater are cleaned and treated here every year.
Since 2007, up to 60,000t of external sludge has been incinerated every year in addition to the on- site sludge.The current capacity utilisation rate of the plant is very high. The plant is utilised in three shifts, 7 days a week. According to Erwin Schäfer, managerof the incineration plant,the operation is economically successful and plans for another sewage sludge line to be built by 2021 are under way.
Aiding this operation is Putzmeister technology, including8 KOS pumps, 2 receiving bins, 2 storage silos - each with discharge equipment, several hundred meters of high pressure delivery lines including fittings, metering valves, lubrication injection systems etc.The pumps are installed through- out with sufficient space. The hopper is easily accessible thanks to a simple and clever solution: The bolted connections of the adapter and the feeding screw conveyor are slackenedand the pump swings out on itsframe around a fixed pivot point by 19°. The KOS is positioned on plates which are assembled on the ground especially for this purpose.In order to pump the sewage sludge safely through the delivery lines a polymer is injected at certain points via a Boundary Layer Injection (BLI).
The team at theSteinhäule sewage treatment plant is optimistic about the future with regard to the economy of the plant and the contribution to a cleaner environment.