Lisnaskea WwTW, Co. Fermanagh

This project involved improvements to a Wastewater Treatment Works to meet upcoming regulatory discharge standards under the EC Directive on Municipal Wastewater Treatment.

The purpose of the scheme was to eliminate Lisnaskea WwTW's problem with offensive odours and its failure to meet Discharge Consents by abandoning the existing activated sludge plant and replacing it with twin Sequential Batch Reactors (SBR). The scheme included improvements to the inlet works and the installation of odour control to new sludge holding facilities and had to be able to facilitate 11,000m3/d and serve a population of 7,000 pe.

As this part of Northern Ireland is an area of outstanding natural beauty that derives much of its income from tourism and game fishing, the improvements included significant environmental works. The scheme was undertaken for NI Water, as a "Partnering Contract" which resulted in a smooth running contract.