Recently water quality deterioration associated with algal broom increases and taste and odor compound
people’s concern in drinking water. Thus, various water quality management is ongoing in each reservoir for stable
drinking water supply. This study focuses on algae fence application to prevent algae entrainment in the water intake
tower. As a result, the longer separation distance is the better between intake system and algae fence. However,
considering maintenance and facility investigation the best separation distance is approximately 8~10m. The best
type of algae fence is dodecagonal which can secure constant distance from all direction and moving frame type in
the direction of upper and down is appropriate for maintenance when water level is changing. When the depth for
algae fence is 2~3m, the possibility of algae entrainment still exist. Thus, this study proposed that the most efficient
and desirable depth for algae fence is 2/3~3/4 of total depth. Based on the results, the algae fence proposed in this
study will contribute to reduce algae entrainment and to supply drinking water with good water quality. In addition,
water quality complaints due to taste and odor occurrence is possible to prevent in advance. In water treatment
plants, the occurrence of filter paper clogging will be reduced, water treatment efficiency will be increased, the
chemical costs for water treatment and energy costs are expected to be reduced.