Three critical processes – solids separation, primary sludge thickening and sludge dewatering – are performed in one compact unit that can completely replace conventional primary treatment and does so in a fraction of the footprint – saving costs and valuable land space. It does this by building a filter mat; particles larger than the mesh opening start the process by partially blocking the mesh. This in turn traps smaller and smaller particles building the mat. Solids are gently lifted from the effluent for thickening and then dewatering via the onboard screw press.
The air knife filter mesh cleaning system uses compressed air to clean, which has many benefits compared to scrapers, brushes or waterbased cleaning systems. Air is gentler on the mesh (to extend its life) and on particles (so they don’t break into smaller pieces). Air cleaning also produces drier sludge for more effective dewatering.
The intelligent onboard controls make this a completely automated system, ideal for remote or unstaffed facilities. A water pressure sensor tells the unit when to rotate the filter mesh (and at what speed), while the PLC simultaneously starts the air knife and sludge screw press
