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KMID : 1024520150240091163
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Journal of the Environmental Sciences
2015 Volume.24 No. 9 p.1163 ~ p.1170
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Evaluation of Drinking Water Treatment Efficiency according to Regeneration Temperatures of Granular Activated Carbon (GAC)
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Kim Sang-Goo
Son Hee-Jong
Jung Jong-Moon
Ryou Dong-Choon
Ryu Pyung-Jong
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Abstract
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This study carried out continuous column test for estimating the regeneration efficiency with regeneration times and
temperatures. More times regenerated granular activated carbon (GAC) has more ash in the GAC and has less apparent
density. Two times regenerated GAC (2nd re-GAC) could removed the Trihalomethanes (THMs) in the water for the first two week after starting continuous column test, on the other hand five times regenerated GAC (5th re-GAC) did not have
adsorption capacity. The THMs concentration in the effluent was almost equal or higher than that of influent at the first time of continuous column test. 2nd re-GAC showed much more DOC adsorption capacity than 5th re-GAC and the GAC which was regenerated with 700 ℃ had highest DOC removal efficiency among the GACs with 600, 700, 800, 900 ℃ regeneration
temperatures. It is anticipated the cost of GAC regeneration could be saved more 100 million won by reducing the furnace
temperature of 3rd~4th and 5th~6th about 150 ℃ compared to the current regeneration condition.
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KEYWORD
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Granular activated carbon (GAC), Thermal regeneration, Temperature, Efficiency, Drinking water treatment
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