Extension of the Worcester Waste Water Treatment Works and Associated Pipelines
Extension of the Worcester Waste Water Treatment Works and Associated Pipelines
This project involved upgrading the existing capacity to 20 Ml/day to accommodate increasing flow from the area and to ensure that the effluent quality standards met those set by the then DWAF.
Client: Breede Valley Municipality
Contract value: R 106 Million
Duration: 28 months
Completed: Sept 2013
Engineer: Aecom
Overview of the Project
This project involved upgrading the existing capacity to 20 Ml/day to accommodate increasing flow from the area and to ensure that the effluent quality standards met those set by the then DWAF.
Scope of Work
The work included:
⦁ Demolition of several structures and modification of existing aspects of the plant
⦁ New sludge draw-off chamber
⦁ New Bioreactor
⦁ 2 SSTs
⦁ Clarifier
⦁ RAS & WAS pump stations
⦁ Transfer pump station
⦁ Chlorine dosing chamber & chlorine building
⦁ New Maturation ponds
⦁ New GCL lined Sludge ponds
⦁ Office & MCC rooms in a new Blower Building
⦁ Paving and internal roads
Challenges & Successes
Existing dry sludge had to be removed and, because the plant remained operational throughout the project, the wet sludge had to be handled by continuous over-pumping to another sludge lagoon.
In addition to the demands of undertaking construction in a constrained environment the site team had to be continuously aware of the movement of the plant’s operational staff as they went about their daily operational duties.
