Short description
Carrigrennan WWTW -
Carrigrennan Wastewater Treatment Works Upgrade - Consultant Contract Planning Stage
Detailed description
Carrigrennan WWTP (Wastewater Treatment Plant) is
located at Little Island, Co. Cork. The plant treats
wastewater from Cork City and surrounding areas in the
County.
The plant was commissioned in 2004 with a design
organic load capacity of 413,000 population equivalent
(p.e.).
The plant was designed to ensure compliance with the
Urban Wastewater Directive. It provides primary and
secondary treatment. Secondary treatment is achieved by
means of a cyclical activated sludge system which is
carried out in Sequence Batch Reactors.
Treated wastewater from the plant is discharged through a
500m long outfall pipe to Cork Harbour at Lough Mahon.
The design of the existing plant did not include for nutrient
removal or disinfection.
Since the plant was commissioned the upper harbour, was
designated a sensitive area under the Urban Wastewater
Treatment (Amendment) Regulations 2004 (SI 440/2004).
Current discharges from the plant do not comply with these
regulations.
Furthermore, there are several shellfish waters designated
within Cork Harbour. Discharges from the proposed
upgraded plant should take these waters into account.
Cork City Council now requires a consultant to identify what
works are necessary to ensure that discharges from
Carrigrennan WWTP comply with:
• Environmental Protection Agency Wastewater
Discharge Licence D0033-01
• SI 440/2004 and
• SI 268/2006 European Communities (Quality of
Shellfish Waters) Regulations 2006
It should be noted that Carrigrennan WWTP was procured
using a Design, Build and Operate (DBO) approach. The
successful contractor was a consortium of five companies.
This Contractor is currently in year 8 of a 20 year operate
contract.
Cork City Council now requires the services of a competent
Consultant, with experience of major civil engineering
works in the wastewater field, for the following stage:
• Stage (i) - Preliminary Report
Type of Contract:
Services | Contracting authority
Cork City Council
City Hall
Co.Cork
Cork
Ireland
View profile | Contact
Liam Murray
www.corkcity.ie |