Client:
Sligo County Council

Engineer:
Donal Harrison
Sligo County Council

Population Equivalent:
2500

Status: Complete

Discharge Standard:
25mg/l BOD: 35mg/lSS: 2mg/l P:3mg/l NH4

Process:

Inlet Screening
Grit Removal
Pumping
STM Aeration
Secondary Settlement
Sludge Pumping
Sludge Storage
Storm Holding Tank
Instrumentation
Controls & SCADA

 

Contract Value: €1,100,000

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Contract involved the design and construction  of a new turnkey wastewater treatment plant to cater for a population equivalent of 2500 people in Coolaney, Co. Sligo.

The treatment process incorporates Inlet Screening and Grit Removal, STM Aeration System, Secondary Settlement, Final Effluent Holding and Sludge Thickening.

The process provided is an advanced nutrient removal process for the removal of Ammonia and Phosphorus to comply with the effluent standards. The biotank comprises of anoxic and aerobic zones within the tank which enhances nitrification and denitrification thus reducing the level of Ammonia and Total Nitrogen in the final effluent. Biological P elimination also takes place within the biotank.

Ward & Burke Construction were responsible for all civil design and construction. The M&E works were carried out by Response Engineering.
Civil construction on the treatment works site consisted of Aeration tanks, Clarifiers, Inlet works, Pump sumps, Control Building and all site services.
A major requirement of the project was the fact that the new plant was constructed within the confines of the existing site with the existing plant being kept in operation during the construction works.