• NSF comprises a pressure vessel filled with granular material
• The granular material constitutes the media bed and can be fine garnet, ceramic beads, walnut shell etc.
• Separate wash vessel provides online media cleaning intrinsic to operation
• Wash vessel has a cyclone, sized to separate solids on cut size or density, to accelerate media regeneration by increasing turbulence and scouring

• Influent flows radially and down through the filter bed - maximising filtration area for a given bed volume
• The use of 2 Tores enables online bed integration.
  Tores hydrotransport - (i) Dirty media from main vessel to wash vessel. (ii) Cleaned media back to main vessel
  
• Clean media returned to top of media bed, providing regular replenishment of media online

• Filtration of solids and oil from
  (i) Seawater, (ii) Waste water treatment, (iii) Drilling fluid
• Produced water treatment offshore and onshore

NSF Packages:

• More compact due to radial and down flow patterns compared to conventional radial bed filters
• Washes media while online – eliminates need for standby unit, reducing capital expenditure and downtime, and reducing weight/footprint
• Media bed is constantly turned over maintaining filtration performance, and is topped up online
• Tore's concentrate wash water so treatment plants/units treat less volume and hence save costs
• Wash water can be recycled (e.g. to FKOD on Four Vanguard FPSO) upstream
• Eliminates need for back washing
• Eliminates need for cartridges, associated cost of replacements and disposal issues