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) Conditions and 7tends of Methylmercury Compound Pollution Figure 3 - 3 Figure 3 - 3 Figure 3-3 Acetaldehyde Manuracturing Process Using Mercury and Mechanisum of Byproduct Organic Mercury Formation