LEF Ingenieros has carried out the design, installation and commissioning of a sludge treatment system for a leading consortium of companies in the construction of solar thermal plants.

This sludge treatment system has been installed at ILANGA’s Thermosolar plant (Upinghton SA). With this installation, there are already 4 references for LEF Ingenieros’ solar thermal installations in South Africa

The system consists of:

• 2 centrifugal feed pumps to the decanters
• 2 conical decanters with scraper
• 2 screw pumps to feed the dehydration system.
• 1 automatic polyelectrolyte preparer and flocculant dosing pumps
• 1 Dehydration system using centrifugal decanter
• 1 tank for collecting clarified water

The main functions of the sludge treatment system are:

• Sludge thickening from the pretreatment system
• Concentration of this sludge thickened through a centrifugal decanter using a flocculant
• Clarified water storage.