PROJECT PORTFOLIO

Client:	DRD Water Service (NI)
Main Contractor:	W.I.S. Ltd.
Civil Contractor:	S Gillan Civil Engineering
Contract Value:	£2.3m
Contract Period:	12 mths

New wastewater treatment works designed for a population equivalent of 7500. The scheme involved the construction of two Sequential Batch Reactors (SBRs), with balancing tanks. A new inlet works was constructed with associated storm tanks and control building. 1 km of pumping main (500mm diameter) was installed to pump the final effluent to the River Lagan. This was a completely new build scheme, using none of the existing works, comprising:

• Inlet storm screen
• Duty/Standby inlet screening equipment complete with motorised skip handling.
• Grit removal and Classification
• Twin Sequential Batch Reactors (SBR) complete with Surge Anoxic Mix (SAM) sections, utilising jet aeration, automatic back-flushing and fixed decantors.
• DAB thickening plant & sludge storage tanks.
• Odour control to sludge holding tanks
• Outlet works including final effluent, storm & storm return pumping stations.
• Control Building housing switchgear, air blowers, process control instrumentation & telemetry.
• Sludge control building housing switchgear, sludge transfer pumps & Polyelectrolyte make-up unit.
• Automatic Standby Generator.