The active permanent casing

• Invented, patented in 1974 and produced exclusively by Desjoyaux
• Rot-proof and environmentally friendly (recycled material)
• Sturdy polypropylene combined with concrete
• Free standing structure
• Resistant to frost and land movements
• Installation certified by Bureau Veritas
• Can be assembled in any shape and size
• Manufacture and installation guaranteed for 10 years

The filtration unit

• Invented, patented in 1983 and produced exclusively by Desjoyaux
• Easy upkeep and maintenance
• Available as a surface-mounted unit, integrated unit or staircase unit
• Pipeless
• No risk of leakage
• Filtration from 6 to 30 microns
• Evolutionary system
• Mobile