抄録
Water contamination in drainage ditches due to soil puddling has been identified as an important problem and this study investigated the filtration of the resulting turbid waters. Bamboo coal was used as a filtering material by absorbing the soil particles and other suspended materials from the turbid waters. In this research, effectiveness of different arrangement of bamboo coal in a modeled channel was investigated. It was found out that turbid water filtration using the net, commonly used for mandarin orange bags, was the most effective method. It is most probably because both the bamboo coal and the net adsorb the soil particles and the spaces between them become sedimentation traps. The arrangement of the bamboo coal in the drainage area to allow space for sedimentation was also found important.
