Transcription of Lecture 5: Filtration
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Lecture 5: Filtration
Islamic University of Gaza Environmental Engineering DepartmentWaterTreatmentWater TreatmentEENV 4331 Lecture 5: FiltrationDr. Fahid Rabah15. Filtration in water Definition of Sedimentation: Filtration is a solid liquid separation process in which theliquid passes through a porous medium to remove asmuch fine suspended solids as Locations of Filtration tanks in water treatment: Filtration tanks are used in all types of water treatmentplants except for disinfection treatment plants. SeeFigures through illustrating the location of WaterPre SedimentationScreenCoagulationFlocculati onSedimentationDistributionDisinfectionS torageFiltrationFigure : Filtration Treatment Plant(River Water)3 ScreenSurface waterSdi ttiCoagulationFlocculationSedimentationD istributionDisinfectionStorageFiltration Figure : Filtration Treatment Plant4 Ground WaterWaterRapid Mixing FlocculationSedimentationRecarbonationDi stributionDisinfectionStorageFiltrationF igure : Softening Treatment Plant Single stage softeningsoftening5 Ground Water wellFiltrationAerationDistributionDisinf ectionStorageFigure : Aeration Treatment Plant(ironandmanganeseremovalplant)( iron and manganeseremoval plant)65.
Granular material filters are the most used types of filters inwater treatment. Usuallysand, anthracite, and Garnet. There are three types of granular filters: 1. Single –medium filters : one type of media isused: either sand or anthracite 2. Dual‐media filters: two types of media is used usually sand and anthracite 3.
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