United Utilities has gone out to tender with a contract worth between £70 to £80 million at its Royton and Oldham Wastewater Treatment Works.
United Utilities has to meet new final effluent discharge consents at both works and reduce storm sewage discharges to improve river water quality in the River Irk and its tributaries.
The proposed solution is to cease full treatment at Royton WwTW and transfer flow to Oldham WwTW for full treatment, where new secondary and tertiary treatment facilities will be provided. At both sites additional storm storage is required to reduce discharges to watercourse to meet required River Water Quality standards.
The project, which will be procured as one contract, comprises the design, procurement, construction, commissioning and operation / optimisation of a new wastewater treatment facilities at Oldham WwTW and Royton WwTW Manchester, together with transfer pipeline and pumping stations.
The scope of the works will include:
Royton WwTW
- New stormwater separation and storage facilities at Royton WwTW
- Relocation of stormwater outfall at Royton WwTW
- Refurbishment of inlet works at Royton WwTW
- New pumping station and and rising main pipeline to transfer flow from Royton WwTW to Oldham WwTW
Oldham WwTW
- New stormwater separation and storage facilities to achieve a new final effluent consent.
- Refurbishment of the inlet works at Oldham WwTW
- Connection to transfer pipeline from Royton WwTW
- Provision of flow control to primary settlement
- Provision of additional primary settlement capacity, together with any refurbishment of existing PST facilities.
- Provision of new secondary and tertiary treatment facilities to meet the new final effluent consent, this will comprise a nitrifying ASP, together with final tanks and a tertiary RGF
- Sludge thickening , together with buffer storage.
- Upgrading of power and control and monitoring systems
- Following commissioning and trials of the new Oldham WwTW facilities decommissioning of disused treatment facilities at Oldham WwTW
The new works at Royton will be required to operate fully automatically with manual intervention limited to regular and reactive maintenance and to be fully compliant with UU's Future Concept of Operations Policy which requires visualisation, performance information and remote intervention of all process units.
The scope will include new SCADA together with remote access, performance monitoring and visualisation of all process units on site at Oldham WwTW, and SCADA access from Oldham WwTW of all assets at Royton WwTW
Time limit for receipt of tenders or requests to participate is 11th November 2013.
Click here to access the tender document in full.
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