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KMID : 0382419980240010038
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Korean Journal of Environmental Health Society
1998 Volume.24 No. 1 p.38 ~ p.44
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by the Process of BAC Fluidized Bed to Produce the Biologically Stable Drinking Water
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Woo Dal-Sik
Nam Sang-Ho
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Abstract
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This study was to investigate the effects of carbon loadings, temperature and expansion ratio on the waterborne organic removal by the biologically active GAC fluidized bed on a laboratory scale. The raw water to be treated comes from midstream of Han river. BACFB(Biological Activated Carbon Fluidized Bed) process was very effective to remove the biodegradable fraction of dissolved organic matter. The more carbon weighed, the more DOC removed in a range from 16.7 to 133.3 g/ℓ. DOC and UV_254 were removed more than 40% and 20% above 20℃ respectively. Between 5℃ and 10℃, DOC and UV_254 were eliminated about 30% and 15% respectively. In general, even if the temperature was higher, DOC removal was a little sensitive, probably influenced by GAC’s residual adsorption capacity. UV_254 reduction was little fluctuated in accordance with water temperature. The gradual increase in expansion ratio from 10% to 75% didn’t greatly affect on the removal of DOC and UV_254. The expansion ratio, therefore, is not a key factor over the critical expansion ratio.
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KEYWORD
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