Picket fence thickeners are an essential part to the sludge treatment process. Solids are thickened by gravity, then collected at the bottom of the basin and raked to a collection sump for removal. The clarified effluent exits over the weir plates and out of the basin. Southwest Engineering have over 40 years of experience in the design, fabrication and installation of picket fence thickeners across Ireland and can provide a value engineered solution to exceed expectations.