Interlaken WWTP (50 000 EP) - Rehabilitation and upgrade of the water treatment

Interlaken WWTP (50 000 EP) - Rehabilitation and upgrade of the water treatment

Client

Interlaken Region WWTP Association

Execution

2009 - 2014

Collaboration

  • Electricity + SCADA: Bering AG
  • Civil engineering: Mätzener & Wyss
  • HVAC and utilities: Welatec

Total costs

9.7 million EUR

Project description

  • Biological treament capacity increase using a hybrid process to ensure a stable nitrification
  • Stabilisation of the operation by modifying a primary clarifier into an anoxic zone and by changing flow paths
  • Transformation of the aeration system and building of a new blower station
  • Replacement of primary clarification and secondary clarification equipments
  • Transformation of the plant grit facility
  • Rehabilitation of the pumping station
  • Rehabilitation of the ferric chloride dosing equipment
  • Rehabilitation of auxilliary equipments
  • Modernisation of the control cabinets and of the control system

Services

  • Project and construction work management, Electro-mechanical Engineer, and local supervision of construction work 
  • Preliminary design (SIA 31)
  • Detailled engineering (SIA 32)
  • Tender and procurement (SIA 42)
  • Execution project, Final execution and commissioning (SIA 51/52/53)

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