제지 폐수처리를 위한 응집제의 최적 혼합주입량 결정 방법

초록

In this study, dewaterability, one of er sludge, was investigated using a simple capillary suction time (CST) measurement method. It turned out that one could use the results of CST to find optimum flocculants ratio to improve drainage in wastewater treatment for the printing paper, tissue paper, and newsprint paper mill. Since the optimum ratio of flocculants could be determined with the value of CST, COD removal efficiency could be improved and optimum floc strength could be achieved with precise ratio of flocculants. It was thus that using CST for determining the optimum ratio of flocculants could be economical by reducing the amount of flocculants. Dewaterability could be meas-ured within several seconds using the values of CST in a precise way. The dewaterability could also be useful investigating the optimum ratio of flocculants.

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