Reference solutions for local authorities – Les cammazes (81)

Problem:

 

  • Municipality of 900 EH
  • Regulatory obligation to purify effluents:
    • Daily flow rate: 261 m3/d
    • Peak hourly flow rate: 53 m3/h
  • Unitary network

 

Solution:       

 

Bio-disc treatment system:

  • Primary settling by 1 digester settling tank
  • 2 rows of bio-discs composed of 2 modules – 2 x 2 593 m²
  • Clarification by 2 lamellar decanters

In operation since 2009

 

Results:

 

Rejection standards to be respected:

  • BOD5: 25 mg/l
  • COD: 125 mg/l
  • TSS: 35 mg/l