At last, Richard Steiner, operations manager of the Mittleres Ilmtal wastewater association in Königsfeld, has exactly the equipment he wanted for precipitant dosing. Dosing from IBC containers is now a thing of the past - and rightly so, as it was neither as safe nor as accurate as actually required.
But now the 10,000-EW wastewater treatment plant has a dosing unit with the latest technology. The centrepiece is a double-walled PE storage tank with a capacity of ten cubic metres, a mechanical cable pull level indicator and manual lifting (consisting of a siphon vessel with a siphon protection solenoid valve).
Accurate to the millilitre
Filling and extraction lines as well as state-of-the-art dosing technology, installed in a weatherproof cabinet, complete the system. Two individual dosing pumps, adjustable to the millilitre, ensure precise, automatic dosing.
Additional safety is provided by the double-walled design, an overfill protection system and a leakage sensor with signalling device. The tank is also individually approved by certified test centres (DEKRA, TÜV, ...) at the manufacturer's factory to determine its suitability under water law.
With best recommendations
The project was realised by the VTA subsidiary Eurodos. "Several colleagues from neighbouring sewage treatment plants recommended EURODOS to me," says Richard Steiner. Other criteria for the decision were the excellent price-performance ratio and, last but not least, the association's excellent long-term cooperation with VTA.
Installation and commissioning also went smoothly: miserable weather could not stop the EURODOS fitters from placing the tank on the foundation, which the wastewater treatment plant team had built themselves, on the agreed date.
Practical report from the VTA Group's knowledge magazine "Der Laubfrosch", issue 73
