ICETT Let's learn about Yokkaichi Pollution Outline of Japan's Industrial Pollution Abatement Approaches to Water Pollution Control (Case Study-2) Minamata City, Kumamoto Prefecture (1) Bottom Sludge Treatment Program in Minamata Bay and Other Water Areas Figure 3 - 9 Figure 3 - 9 Figure 3-9 Landfill and Dredging Process