Influence of Gravel as Protection Layer on the Filter Run Time
DOI:
https://doi.org/10.24002/jts.v15i1.3152Keywords:
protection layer, filter run time, clogging, sand filtration, filter performanceAbstract
Abstract: Since the beginning of the usage of slow sand filter (SSF) as one of the water treat-ment technologies, studies on how to enhance the performance have been conducted to date. One of the limitations in the current knowledge is regarding the method to increase the filter run time. The addition of protection layer may extend the filter run time. This paper focuses on the influence of gravel as the protection layer to the filter run time and turbidity removal. Gravel was chosen as the material of protection layer because of its low-cost and availability. A system-atic investigation by comparing only one different factor within the filter, which was protection layer, was conducted under the laboratory scale. The experimentconsisted of two filter columns namely K1 and K2. Both filters were constructed using the same filter depth, type of sand, and grain size distribution. The protection layer was added to filter K1, but not to filter K2. The sol-ids penetration and the increase of filter head loss was
used to evaluate the filter run time. A sta-tistical analysis was also carried out to examine the difference on the turbidity removal from both filters. The findings showed that by adding the protection layer, the filter run time could be extended up to 70%. Regarding to the turbidity
removal, there was insignificant difference between two filters.
References
Aronino, R., Dlugy, C., Arkhangelsky, E., Shandalov, S., Oron, G., Brenner, A. and Gitis, V. (2009), “Removal of viruses from surface water and secondary effluents by sand filtration”, Water research, Vol. 43 No. 1, pp. 87–96.
Elisson, J. (2002), “Rule Development Committee Issue Research Report Draft”, Sand/Media Specifications. Washington State Department of Health. USA.
Ellis, K.V. and Aydin, M.E. (1995), “Penetration of solids and biological activity into slow sand filters”, Water Research, Vol. 29 No. 5, pp. 1333–1341.
Gimbel, R., Nahrstedt, A. and Panglisch, S. (2008), “Filtration zur Partikelabtrennung bei der Wasserreinigung”, Chemie Ingenieur Technik, Vol. 80 No. 1-2, pp. 35–47.
Graham, N. and Collins, M.R. (2014), “Slow sand filtration: recent research and application perspectives”, in Nakamoto, N., Graham, Nigel J. D, Collins, M.R. and Gimbel, R. (Eds.), Progress in slow
sand and alternative biofiltration processes: Further developments and applications ; contributions presented at the 5th International Slow Sand and Alternative Biological Filtration
Conference, held in Nagoya, Japan in June 2014], IWA Publ, London, pp. 3–16.
Guchi, E. (2015), “Review on slow sand filtration in removing microbial contamination and particles from drinking water”, American Journal of Food and Nutrition, Vol. 3 No. 2, pp. 47–55.
Kandra, H.S., McCarthy, D., Deletic, A. and Fletcher, T.D. (Eds.) (2010), Assessment of clogging phenomena in granular filter media used for stormwater treatment, Citeseer.
Kandra, H.S., McCarthy, D., Fletcher, T.D. and Deletic, A. (2014), “Assessment of clogging phenomena in granular filter media used for stormwater treatment”, Journal of Hydrology, Vol. 512, pp. 518–527.
Lang, J.S., Giron, J.J., Hansen, A.T., Trussell, R.R. and Jr, W.E.H. (1993), “Investigating filter performance as a function of the ratio of filter size to media size”, Journal‐American Water Works Association, Vol. 85 No. 10, pp. 122–130.
Le Coustumer, S., Fletcher, T.D., Deletic, A., Barraud, S. and Poelsma, P. (2012), “The influence of design parameters on clogging of stormwater biofilters: a large scale column study”, Water research, Vol. 46 No. 20, pp. 6743–6752.
Leverenz, H.L., Tchobanoglous, G. and Darby, J.L. (2009), “Clogging in intermittently dosed sand filters used for wastewater treatment”, Water research, Vol. 43 No. 3, pp. 695–705.
Mälzer, H.J. and Gimbel, R. (Eds.) (2006), Extension of slow sand filter running times by protection layer, IWA Publishing.
Mercado, J.M.R., Maniquiz-Redillas, M.C. and Kim, L.H. (2015), “Laboratory study on the clogging potential of a hybrid best management practice”, Desalination and Water Treatment, Vol. 53 No. 11, pp. 3126–3133.
Nakamoto, N. (1992), “Normalized head loss as a clogging indicator in slow sand filter and its algae”, Japanese J. of Water Treatment Biology, Vol. 28 No. 1, pp. 1–16.
Pfannes, K.R., Langenbach, K.M.W., Pilloni, G., Stührmann, T., Euringer, K., Lueders, T., Neu, T.R., Müller, J.A., Kästner, M. and Meckenstock, R.U. (2015), “Selective elimination of bacterial faecal
indicators in the Schmutzdecke of slow sand filtration columns”, Applied microbiology and biotechnology, Vol. 99 No. 23, pp. 10323–10332.
Sugimoto, T. (2014), “Schmutzdecke development and treated water quality”, in Nakamoto, N., Graham, Nigel J. D, Collins, M.R. and Gimbel, R. (Eds.), Progress in slow sand and alternative
biofiltration processes: Further developments and applications; [contributions presented at the 5th
International Slow Sand and Alternative Biological Filtration Conference, held in Nagoya, Japan in June 2014], IWA Publ, London, pp. 121–129.
Wubbels, G.H., Bruins, J.H., Bosman, M. and Woerdt, D. v. d. (2014), “The functioning of biological slow sand filtration in relation to the presence and the role of Annelids in the
schmutzdecke”, in Nakamoto, N., Graham, Nigel J. D, Collins, M.R. and Gimbel, R. (Eds.), Progress in slow sand and alternative biofiltration processes: Further developments and applications; [contributions presented at the 5th International Slow Sand and Alternative Biological Filtration Conference, held in Nagoya, Japan in June 2014], IWA Publ, London, pp. 103–109.
Yamamura, S. (2014), “Overview on the current condition of slow sand filtration and its challenges in Japan”, in Nakamoto, N., Graham, Nigel J. D,
Collins, M.R. and Gimbel, R. (Eds.), Progress in slow sand and alternative biofiltration processes: Further developments and applications; [contributions presented at the 5th International Slow Sand and Alternative Biological Filtration Conference, held in Nagoya, Japan in June 2014], IWA Publ, London, pp. 25–33.
