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pp.53-68
In order to research the adsorption removal characteristics of trace organic by-products in disinfection of drinking water by biological activated carbon(BAC), water samples disinfected with Cl_2, O_3 and ClO_2 after treatment by fluidized-bed system with water added with humic acid(l0㎎/L) were investigated the formation and the removal of trihalomethanes (THMs), and the trace organic by-products by gas chromatography(GC) & gas chromatography/mass selective detector(GC/MSD). Control was used by activated carbon(AC) and water added with hurnic acid(HA). The results were summarized as follow ; The THMs removal effect of BAC by chlorination was in lower 90 % than that of control(HA), the sorts of oxidants formed by Cl_2, O3 and ClO_2 were that O_3 was very fewer than Cl_2 or ClO_2 and that ClO_2 was fewer than Cl_2 The trace organic by-products were esters and phthalates etc. Based on results above, it is concluded that BAC was appeared the more desirable adsorption-degradation removal characteristics than that of AC.
