SPECTRUM MICRO MEDIA FILTER - Eco-Tec

How the Spectrum Micro Media Filter works ...The Spectrum Micro Media Filter isable to achieve its high level of performanceby using two backwashableparticulate media layers. An upper layerof coarse media allows for an extendedservice cycle by providing depth filtrationof large particles while a lower layer ofvery dense micromediaprovides surfacefiltration of smallcoagulated particles(Figure 1).Coarse upper layer:removal of large particles(depth filtration)The nominal diameter of the micromediain the lower layer is less than thediameter of the fine garnet media andless than 20% of the diameter of thecoarse sand commonly used in conventionalmulti-media filters (Figure2).The flow channels through the micromedia are extremely small. The tortuouspath of fine channels provides excellentretention of solids. During backwashing,the media expands to release solids.ACTIVATEDCARBONCOARSE SANDExtra-fine lower layer:removal of very smallparticles(surface filtration)Figure 1ANTHRACITESPECTRUMUPPER LAYERSPECTRUMFINE MEDIAFINE SANDFigure 2Micrometers(Log Scale)Angstrom Units(Log Scale) 2 3 5 8√ ST Microscope √ Scanning Electron Microscope √ Optical Microscope √Visible to Naked EyeIonic Range Molecular Range Macro Molecular Range Micro Particle Range Macro Particle Range0.001 0.01 0.1 1.0 10 100 1000203050802003005008002000The Filtration Spectrum1 10 100 1000 10 4 10 5 10 6 10 73000500080002 3 5 82 3 5 8 2 3 5 8 2Approx. Molecular Wt.(Saccharide Type-No Scale)100 200 1000 10,000 20,000 100,000 500,000Albumin ProteinAqueous Salts Carbon Black Paint PigmentYeast CellsPinPointCourtesy of Osmonics Inc.RelativeSize ofCommonMaterialsProcess ForSeparationAtomicRadiusMetal IonSugarSyntheticDyePesticideHerbicideREVERSE OSMOSIS(Hyperfiltration)NANOFILTRATIONNote: 1 Micron (1x10 -6 Meters) ≈ 4x10 -5 Inches (0.00004 Inches)1 Angstrom Unit = 10 -10 Meters = 10 -4 Micrometers (Microns)Endotoxin/PyrogenVirusColloidal SilicaGelatinULTRAFILTRATIONThe Spectrum Micro Media Filterextends the range of particle filtration intothe range of microfiltrationTobacco SmokeAsbestosLatex/EmulsionMICROFILTRATIONBacteriaBlue Indigo DyeA.C. Fine Test DustCryptosporidiumMilled FlourRedBloodCellsCoal DustGiardiaCystPollenHuman HairMistPARTICLE FILTRATIONBeach SandGranularActivated CarbonIon Ex.ResinBead© Copyright 1998, 1996, 1993, 1990, 1984 Osmonics, Inc., Minnetonka, Minnesota USASPECTRUM MICRO MEDIA FILTRATIONwith coagulation