References

Grasse Roumiguières, France

 

The water treatment technologies implemented in the 80's at the Roumiguières wastewater plant had become obsolete: organic pollutants, chemicals and bacteria were discharged into the Siagne river.  The Siagne river,  classified  "sensitive environment", serves an area of fish farming and is a well field to supply drinking water of Cannes City. Faced with problems of safety and environmental issues, the municipality must undertake extensive work to design and build a new wastewater plant.

 

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The solution provided by Degrémont for the new plant guarantees a high degree of quality of the treated water and allows the municipality to comply with the environmental standards.

 

Treatment line :

Pretreatment:

  • Coarse screening 1,200 m3/h
  • Sand and grease removal 300 m3/h
  • Fine screening 300 m3/h
  • Storm water tank 1,200 m3/h (max.flow rate)

 

Biological treatment:

  • Aeration (2 tanks 1000 m3)
  • Ultrafiltration on ULTRAFOR® MBR

 

Sludge treatment:

  • Dewatering on 2 centrifuges
  • Sludge dryness : 25%

 

Air treatment:

  • Covering of odour generating equipment
  • Slate air conveyed to physico-chemical
  • Odour treatment

 

 

Water characteristics:

 

  Raw water

Treated effluent

Limit 2h

Treated effluent

Limit 24h

COD (mg/l) 753 80 50
BOD5 (mg/l) 344 20 10
Suspendid solids (mg/l) 584 20 -
NTK (mg/l) 79 50 12
PT (mg/l) 24   2
Coliforms (unit/100 ml)     20.000

more information

 

Degrémont SAS

183 avenue du 18 juin 1940
92500 Rueil Malmaison  
 

Tel : +33 1 46 25 6000

 

KEY figures of The contract

KEY DATES

  • Contract award : 2002
  • Start of works : 2004
  • Plant Commissioning : 2006
  • Works duration : 18 months

 

Degrémont scope:

  • Engineering studies
  • E&M equipment procurement and erection
  • Commissioning and testing

 

downlaod

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