Puits crépiné

Construction of a Wastewater Treatment Plant

Lowering the water table with deep wells in a watertight wall of steel sheet piles to construct a wastewater treatment plant

Context

Project Type :

Dewatering

Location :

Belleville (69)
Logo entreprise Bertrand Duron

Problem

  • Phase 1: drying the bottom of the trench with strong supply channels in the gravelly sands to create a pond of 350 m²
  • Phase 2: filling the ponds to check the structures
  • Height to lower: 4 metres

Solution

  • Advising and assisting the customer on the steel sheet pile solution
  • Complete engineering of dewatering by deep wells in an enclosure closed off by steel sheet pile
  • Definition and realisation of pumping wells
  • Complete installation:
    • Pumps
    • Dewatering network
    • Decantation before removal to the sewerage network
  • Remote monitoring of pumping with permanent on-call service
  • Filling ponds by pumping into the well to remedy the lack of high flow rate water supply
  • Duration: 4 months