construction of a new 29,000 p.e. sewage treatment plant

the contract covers the following services: design-build for the restructuring of the Pont-Ezer wastewater treatment plant in Plouisy.

The Pont-Ezer wastewater treatment plant, of activated sludge type and with a capacity of 22,500 PE, receives urban wastewater from Guingamp, Grâce, Ploumagoar, Pabu-Sud, Saint-Agathon and Plouisy.

The following issues are encountered on the current installation:

- Need to reduce concentrations and flows at discharge, made necessary by the new authorization order,

- hydraulic overload in winter (resulting in pre-treated effluent by-passes),

- dilapidated premises and structures.

The Community decided to build a new wastewater treatment plant on the existing site as well as nearby (on the site of the former waste disposal site).

This operation is launched with a view to awarding a design/build contract.

The programme of work includes:

- Works and installations necessary for the purification of effluents,

- the structures and installations necessary for the treatment of the sludge produced on the plant,

- the facilities necessary for collecting and treating odours generated in sensitive structures and premises,

- substations ancillary to treatment (reagents, drainage, industrial water, drinking water, compressed air),

- technical, control and operating rooms,

- the services associated with the operation and operation of the structure (electricity, automation, supervision, remote monitoring, pipes, ducts, V.R.D., etc.),

- the preliminary works and specific provisions necessary to carry out the construction work of the new installations while maintaining continuity of service during the work.

- deconstruction work on existing installations.