Deep bed filter as pre-treatment to stormwater

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Show simple item record Johir, Md Abu en_US Vigneswaran, Saravanamuth en_US Kandasamy, Jaya en_US
dc.contributor.editor en_US 2010-05-28T09:47:56Z 2010-05-28T09:47:56Z 2009 en_US
dc.identifier 2009000783 en_US
dc.identifier.citation Johir Md Abu, Vigneswaran Saravanamuth, and Kandasamy Jaya 2009, 'Deep bed filter as pre-treatment to stormwater', Desalination Publications, vol. 12, pp. 313-323. en_US
dc.identifier.issn 1944-3994 en_US
dc.identifier.other C1 en_US
dc.description.abstract This paper presents the results of experiments on the application of dual media and single media deep bed filters as pre-treatments to stormwater. In-line flocculation-filtration experiments were conducted with dual and single media filter. The single filter media (80 cm) consisted of either anthracite or sand, and the dual media filter consisted of sand (40 cm at the bottom) and anthracite (40 cm on top). Filtration velocities of 5 m/h, 10 m/h and 15 m/h were examined. The removal efficiency for turbidity, suspended solids and TOC was found to be 95%, 99% and 30a??45% respectively at a flocculant dose of FeCl3 of 15 mg/L. The anthracite filter media showed a lower headloss development (26 cm, operated at 5 m/h filtration velocity with FeCl3 dose of 5 mg/L). The removal efficiency for nitrogen was lower than phosphorus which was relatively good (up to 50%). The removal efficiency for heavy metals such as Cd, Pb, Cr and Ni was found to be very low for all tested filtration systems because concentrations of these metals in the influent were also low. This filter can be used as a pretreatment to a membrane filter as the modified fouling index was reduced from 750 s/L2 (for stormwater) to 15 s/L2 (for filtered effluent). Detailed submerged membrane filter experiments conducted with pre-treated water showed that the membrane filter can be successfully be used as post-treatment to in-line flocculant-filter at a sustainable flux of 10 L/m2.h to remove the remaining solids and pathogens. An increase of air scouring in the membrane unit decreased the pressure development although it did not have any effect on increasing the critical flux beyond 10 L/m2.h. en_US
dc.language en_US
dc.publisher Desalination Publications en_US
dc.relation.isbasedon en_US
dc.title Deep bed filter as pre-treatment to stormwater en_US
dc.parent Desalination and Water Treatment en_US
dc.journal.volume 12 en_US
dc.journal.number en_US
dc.journal.number 1-3 en_US
dc.publocation USA en_US
dc.identifier.startpage 313 en_US
dc.identifier.endpage 323 en_US FEIT.School of Civil and Environmental Engineering en_US
dc.conference Verified OK en_US
dc.for 090700 en_US
dc.personcode 10529891 en_US
dc.personcode 900451 en_US
dc.personcode 920569 en_US
dc.percentage 100 en_US Environmental Engineering en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US en_US
dc.location.activity en_US
dc.description.keywords Deep bed filter; In-line flocculation; Hollow fibre membrane; MFI en_US
dc.staffid 920569 en_US

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