| Abstract |
| Membrane filtration technology has been applied to drinking water treatment and, grown steadily with public demand for high water quality and strict regulations. Membranes are considered a promising material to provide better quality drinking water by removing bacteria, viruses, microorganisms as well as particulate and organic matter. This study aims to investigate the effect of granular activated carbon (GAC) adsorption as a pretreatment before membrane filtration (MF) processes and evaluate the performance of GAC/MF systems for the treatment of lake water. Specifically, on water that has a relatively safe drinkable quality, which will depend on seasonal changes. Applied filtration rates during this experiment were <100 m/d for GAC and 0.5 m3/m2.d for MF. As a result, both GAC bed and GAC/MF system achieved more than 90% efficiency in removing turbid and organic matters corresponding to UV254 and dissolved oxygen carbon (DOC). This indicates that the GAC adsorption and filtration was considerably effective for reducing foulants. The transmembrane pressure (TMP) at increased MF rates was in proportion to the increased humic acid rates in the range of 2 to 10 mg/.L These results indicate that the addition of a GAC bed prior to the membrane filtration process is necessary for cost-effective lake water treatment due to both efficient reductions of organic and turbid matter and membrane fouling mitigation due to reduction of the TMP. |
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| Key Words |
| Humic substance, Lake water treatment, Membrane filtration process, Pretreatment, GAC adsorption and filtration, TMP, Turbid matter, 휴믹물질, 호소수처리, 분리막여과공정, 전처리, 입상활성탄흡착과 여과, 막간차압, 탁질 |
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