Background
Toonagh (WTW) is a small rural site in County Clare, Ireland. The original process treatment took raw water and added alum for coagulation, chlorine for disinfection and sulphuric acid/caustic for pH correction. The water was then passed through a lamella separator and a sand filter with the sludge being captured in a tank for removal from site. The sludge was being removed from site by tanker every 1 to 2 days.
The cost of emptying the sludge tank so frequently and transporting it offsite was proving to be prohibitively expensive. The client was looking for a simple and easy to install and maintain solution to cut these costs.