The Upper Austrian Reinhalteverband Mühltal & Region Böhmerwald comprises 24 municipalities and manages about 1,000 km of sewer, 18,000 sewer shafts, 300 pumping stations, 60 storm water basins and 5 sewage treatment plants. One of the storm water basins, the Erletbasin near Ulrichsberg, consists of two storagepipes each 30 m long and 2,000 mm in diameter.The pipes store the rainwater and retain it beforeit enters the main sewer towards the Ulrichsberg sewage treatment plant. The outflow is reduced by a throttle weigher at the outlet of thestructure. For reasons of operational safety and the throttle and in view of growing demands on the sewer management, an alternate throttle solution was required which would also measurethe flow.
The reliable discharge control for wastewater and rainwater
Precise and easy to maintain throttle system for stormwater tanks and wastewater structures. The fast, almost self-cleaning and remotely controllable butterfly valve with pneumatic actuator is based on the flow measurement integrated in the system and limits the flow to an arbitrarily adjustable quantity. As long as the maximum flow is not reached, the flap remains open, while the flow measurement system measures precisely even when partially filled.