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Marseille, France

Multi-Rake Bar Screens KUR-C

Passavant® Multi-Rake Bar Screen KUR-C Bassin de Ganay in Marseille, France

Situation

The inhabitants of Marseille were well aware of the following situation:
During heavy stormwater events, thousands of cubic metres of waste water and storm water were discharged into the sea due to the lack of rain retention basins.

The Calanque de Cortiou was then closed for the public. The ecological challenge was to prevent the release of one million cubic metres of waste water per year into the natural environment and to relieve the Geolide wastewater treatment plant, the largest underground plant in Europe (40,000 m²), by the construction of a huge  wet weather flow retention basin.

 

Customer

DEGREMONT

92500 RUEIL MALMAISON - FRANCE

Commissioning

May 2015

Advantages

  • Short cleaning cycles due to revolving chain with 7 cleaning elements per screen
  • No sprocket wheels in the submerged area
  • Completely hygiene-enclosed system

Solution

The underground stormwater retention basin Ganay, has a diameter of 56 m and is capable of collecting 50,000 m³ of mixed stormwater and wastewater in just one hour before it is discharged into the Geolide treatment plant within less than 24 hours.
The pre-screening of the enormous water quantities is carried out with 3 Passavant® Multi-Rake Bar Screens KUR-C. More than 10 m³ of screenings are discharged per hour via downstream installed conveyor belts. The total wastewater throughput is 14 m³/s.
Drainage pumps can operate reliably and the maintenance effort for cleaning the stormwater tank after use is minimised.

 

Technical Data

3 sets of Multi-Rake Bar Screens KUR-C:

Maximum flow rate:                           16,800 m³/h/screen

Number of cleaning rakes:                7 sets per screen

Channel width :                                    2,100 mm

Channel depth:                                     4,500 mm

Gap width:                                              50 mm

Bar rack height:                                    3,500 mm

Installation angle:                                75 °

   

Are you interested in more details or do you have any further requests?

Therefore, please get in touch via our general contact form and refer to this specific case study.

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