For centuries, the Benedictine monastery of Melk, a unique baroque jewel, has been enthroned above the charming town of the same name on the river Danube. Though not for quite as long as that, VTA has still been ensuring that odours from the sewers are not an issue in Melk for over 10 years now.
For centuries, the Benedictine monastery of Melk, a unique baroque jewel, has been enthroned above the charming town of the same name on the river Danube. Though not for quite as long as that, VTA has still been ensuring that odours from the sewers are not an issue in Melk for over 13 years now. This wasn’t always the case. Since the neighbouring municipality of Schönbühel was connected to the system around the turn of the millennium and a second municipal treatment plant (Spielberg) was shut down, some of the water going to Melk’s 14,000-PE municipal treatment plant is carried in pressure pipelines that are kilometres long. The extended retention time for the wastewater in the pressure pipelines and pump shafts soon led to unpleasant smells. And not only that: High concentrations of hydrogen sulphide (H2S) in the pump shafts caused massive damage to the electronics in the control cabinets and control units for the pumps. The result was high repair costs.
Impressive from the outset and to this day
This is where VTA Dolomin® came in, which prevents the development of H2S from the outset. In a trial run, the system product proved impressive, both with the optimum results it produced and the most attractive price-performance ratio. After the start of dosing, the bad odours disappeared immediately. That was in May 2004 – and it has stayed that way to this day. Since then, corrosion of structures and machines has for all intents and purposes no longer been an issue, and the risk of expensive subsequent damage and plant downtime has been averted. Given this impressive success, two more dosing points were added to the ones already in place in Spielberg and Schönbühel in 2013. The H2S concentration is monitored continuously at three fixed measuring points with VTA’s H2S Reducer, and dosing is either controlled automatically or can be conveniently regulated online.
Foul odours immediately
That was in May 2004 – and it has stayed that way to this day. Since then, corrosion of structures and machines has for all intents and purposes no longer been an issue, and the risk of expensive subsequent damage and plant downtime has been averted.
Given this impressive success, two more dosing points were added to the ones already in place in Spielberg and Schönbühel in 2013. The H2S concentration is monitored continuously at three fixed measuring points with VTA’s H2S Reducer, and dosing is either controlled automatically or can be conveniently regulated online.
Field report from the VTA Group’s scientific journal “Laubfrosch”, issue 76
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