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Rainwater flooding

Proven
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Issue

Rainwater flooding

Flooding due to heavy rainfall or high surface water levels.

Solution

Improved separated sewerage

The improved seperated sewerage is a similar system as a separated sewerage, but with one clear difference: the improved separated sewerage uses a ‘first flush’ to discharge the largest pieces of pollution to the wastewater sewerage.

Hemelwaterriool; WaterWindow

Pros

  • Relatively clean water is discharged on the surface water
  • Less pollution at the surface water due to the ‘first flush’
  • Mistakes in connecting the rainwater drains do not result in wastewater being discharged at the surface water.

Characteristics

  1. Topic Urban water
  2. Development state 10: Proven in operational situation
  3. Setting type Urban area
  4. Water type Rainwater