The SFK filter is a compact, low energy, self-contained primary and secondary treatment system requiring little operator involvement. Suspended solids greater than 200 microns can be continuously removed as comparatively dry sludge up to 35 to 40 percent solids by weight.

The Salsnes filter continuously filters incoming wastewater and, as the flow increases and/or decreases, the speed of the filter belt is adjusted accordingly via a sensor. The filter belt is continuously cleaned by air from a packaged blower so the sludge and solids drop into the dewatering unit.

Water is used to flush the filter belt two to four times a day (100-400 l/day). No high pressure pumps are required (as on traditional screening equipment) and the filter mesh is available from 0.1mm up to 1.0mm in size.

The all stainless steel constructed SFK models (stand-alone) come in four basic versions supporting a wide range of flow rates and with no limitations in flow capacity designs. The units can be supplied with or without the dewatering system.