Experimental Study on GAC-Sand Filter for Advanced Treatment in Drinking Water

Abstract:

A granular activated carbon sand dual media filter (GSF) was investigated as an advanced water treatment process of waterworks through the pilot test. The results show that the GSFs can remove organic matter in the water effectively instead of the sand filters. During the filtration,the effectiveness of COD_Mn elimination was effective, the average removal rate reached 48.2%. The average pH of the filtered water had dropped from 7.26 to 8.35, indicating that the alkaline environment is necessary for nitrifying bacteria to remain active. The ability of water treatment and quality could be raised and improve the chemical safety of the filtered water.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 3044-3047
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.3044
• Online since: August 2013
• Authors: Wan Chun Tan*, Tao Wang, Yun Bo Wang, Shi Quan Sun, Chen Xue Yu
• Keywords: Biosecurity, Drinking Water, GAC-Sand Filter, Ordinary Sand Filter

References

[1] Dahab M,Sirigina S. Nitrate removal from water supplies using biodenitrification and GAC-sand filter systems. Water science and Technology, 1995, 30(9): 133~39

DOI: 10.2166/wst.1994.0462

[2] Feng S, Xie S G, 2012. Ammonium removal pathways and microbial community in GAC-sand dual media filter in drinking water treatment. Journal of Environmental Sciences, 24(9) :1587–1593

DOI: 10.1016/s1001-0742(11)60965-0

[3] Andersson A, Laurent P, Kihn A, Prevost M, Servais P, 2001.Impact of temperature on nitrification in biological activated carbon (BAC) filters used for drinking water treatment. Water Research, 35(12): 2923–2934.

DOI: 10.1016/s0043-1354(00)00579-0

[4] Amy Gary L, Sierka Raymond A, James Bedessen, et al. Mo-lecular size distributions of dissolved organic matter. Journal AWWA,1992,6:67~75

DOI: 10.1002/j.1551-8833.1992.tb07377.x

[5] Kim J, Kang B, 2008. DBPs removal in GAC filter-adsorber. Water Research, 42(1-2): 145–152.

DOI: 10.1016/j.watres.2007.07.040

[6] Wang H X, Ho L, Lewis D M, Brookes J D, Newcombe G, 2007.Discriminating and assessing adsorption and biodegradation removal mechanisms during granular activated carbonfiltration of microcystin toxins. Water Research, 41(18):4262–4270.

DOI: 10.1016/j.watres.2007.05.057

[7] Christian Volk, Kimberly Bell, 2000. Impact of enhanced and optimized coagulation on removal of organic matter and its biodegradable fraction in drinking water. Water Research,12(5):3247~3257

DOI: 10.1016/s0043-1354(00)00033-6

[8] Bablon G P, Ventresque C, Aim R B. Developing a sand-GAC filter to achieve high-rate biological filtration. Journal American Water Works Association, 1988,80(12): 47~53

DOI: 10.1002/j.1551-8833.1988.tb03149.x

[9] Liang C H, Chiang P C, 2007. Mathematical model of the nonsteady-state adsorption and biodegradation capacities of BAC filters. Journal of Hazardous Materials, 139(2): 316–322.

DOI: 10.1016/j.jhazmat.2006.06.033

[10] Wataru,Tsujimoto,Haruo Kimura,Tomohiro Izuetal,1998. Membrane Filratration and Pretreatment by GAC. Desalination,119(6):323~326.