Space for water

Rainwater retention and flood protection
  1. Home
  2. Business areas
  3. Water body rehabilitation
  4. Flood protection and rainwater retention
Drausy® system hoses (in the foreground) are inserted into the retention basin to minimise the volume in the sediment

Sustainable watercourse management

Rainwater retention, fire-fighting water reserve.

Bad Vilbel: The Ritterweiher is a technical water body. As a rainwater retention basin, it plays an important role in heavy rain and flood events. Rainwater flows into the Ritterweiher pond from various directions via street inlets; in particular, the incoming water from the Bad Vilbel forest is discharged here. The Drausy® system has been in operation since 2014 and ensures a controlled sediment volume.

back to overview

Sustainable and climate-friendly oxygen therapy

Retention Bad Vilbel - Space for water volume

Sludge volume reduction

The organic part of the sediment is biodegraded:

Organic matter makes up the largest volume share in the sediment - the inputs from the nearby forest and the surrounding area are continuously counteracted. The aeration has proven its worth since 2014.

The retention basin is located on the edge of the forest and enhances a residential area visually and through positive temperature regulation. Since it is a technical structure, it is not allowed to swim in this body of water.

Urban biotope

charming retention basin
Snapshot during the measure: the Drausy® aeration system lies ready for installation at the edge of the bank.

Work in Progress

Aeration system at the edge of the bank
In the foreground you can see the reel with the Drausy® aeration system - in the background fitters are working - they are laying out the system hose line evenly in the body of water.

Work in Progress

Insertion aeration system
The bubble trail on the surface of the water is the only thing visible from the aeration system.

Ventilation installed

Visible: The bubble trail
The bubble trail on the surface of the water is the only thing visible from the aeration system.

Ventilation installed

Visible: The bubble trail
View of two divers in the Ritterweiher: the measure is inspected from all sides.

Lake monitoring

System control at the bottom
  • Controlled pollutant binding - phosphate remains bound in the aerobic sediment
  • Volume reduction - through decomposition of the organic matter and compression of the sediment
  • Oxygen enrichment - even at elevated temperatures

Sludge decomposition: organics make up the largest volume share

The loss on ignition gives an indication of the organic content in the sediment:

Explanation loss on ignition Volume reduction sediment

Which products have been used?

A total of 500 m of Drausy® system hose was applied to the 5,000 m2 water body area in April 2013 - some zones were treated with sediment inoculation. After five months of successful treatment, the aeration section was reduced to 200 m as a permanent installation and is still active.

Contact us for your customised Drausy® system.

Problems with mud or odour? We do have your solution.
Get in touch with us