• Toboggan run Preda - Bergün closes today (23rd february 2024) at 05:00 p.m.
  • 1st section Darlux open
  • The Filisur cross-country ski trail is closed.
  • The Bergün and Filisur ice fields are closed due to the temperatures.

New timetable toboggan trains from 29.01.2024 ➜

 

 

 

 

Timetable adjustment for toboggan trains

Nature Trail Bergün/Bravuogn

Energieweg 07: Bakterien fürs Abwasser

Funktionsschema der Kläranlage.
Energy Route 07: Bacteria for Wastewater

Description

In a hut with 5000 overnight stays per year, the disposal of wastewater is a challenge in addition to the energy requirement. To the right below the path you can smell and see the biological wastewater treatment.

What you leave behind in the quiet place first goes into the pre-clarification below the four sinkhole covers. In the primary clarifier, the wastewater flows so slowly that solids and sludge from the wastewater settle. 

The wastewater then enters the trickling filter. The 7-meter-deep, gravel-filled pool is located under the boards. The wastewater is sprayed finely over the gravel and flows slowly over the gravel stones. The microorganisms living on it absorb the dissolved pollutants from the water as food and thus purify the wastewater.
In the secondary clarifier under the round metal lid, the microorganisms carried by the trickling filter settled at a slow flow rate. The treated wastewater is discharged via the overflow into the meadow.  Once a year, the sludge from pre- and post-clarification is removed, dried and distributed underneath the plant.

Now go to the last interesting place "Ice melting and brazen shepherds" on the terrace. There you will have time to recharge your batteries and observe and listen to all kinds of things!

Map

Energieweg 07: Bakterien fürs Abwasser

Responsible for this content Graubünden Ferien.
This content has been translated automatically.