Clareville Water Treatment Works, Clareville, Castelconnell, County Limerick
Customer: Limerick City Council
System Type: Powder storage, supply & mixing
Material: Hydrated Lime
System Description: Silo transfer, meter, transfer & injection conveyors
Silo Size: 30 tonnes
Mixing Method: Direct injection of lime, which is then mixed by the spiral conveyor action.
Water Flow Rate 87 MLD maximum, 60MLD typical
This extensive site abstracts water from the River Shannon, and treats it for use by the population of Limerick and environs. More than 18 billion litres per annum. As part of the cleaning of the water, solids are removed, generating waste sludge. This sludge is dried out, and leaves the site as approx 90% dry solids sludge. As part of the drying out process, hydrated lime is added to the sludge.
The lime is stored in a large silo, and SKE Solutions supplied the unique ‘Sodimate’ system to transfer the lime from the silo, and inject it to the sludge as it is conveyed. This equipment uses a mechanical arch breaker system in the silo cone, which eliminates the problems of contamination and compaction that occur when using traditional air or vibration techniques for removing lime from the silo. Then a metering, transfer and injection conveyors are used to dose the lime powder. This is a highly effective, low maintenance system.