抄録
This study used bamboo coal like filter for clarification of turbidity in water and carried out with two laboratory experiments and one in situ experiment. Objectives of the first laboratory experiment were (1) to assess the capability of small, middle and big-sized bamboo coal, and (2) to assess the relationship between inflow volume and turbidity of outflow. The results showed that, the small-sized gave the most decrease of turbidity values; the next were the medium- and big-sized ones. With inflow volume of 2L/min, the turbidity was the least decreased followed by 6, 10 and 14L/min. The second experiment used only small-sized and assessed the relationship between different volume of filter and turbidity of outflow. The results showed that high volume of filter can reduce turbidity more effectively than low volume. In situ experiment showed that turbidity in outflow measure indicated the decrease of 30〜90% and depended on concentration of turbidity in inflow and measure time. This study pointed out that bamboo coal can reduce the turbidity of runoff water.
