Water treatment includes raw water treatment, sewage treatment and industrial water treatment. In raw water treatment with activated carbon, etc., can be used for coagulation and clarification of suspended particles in living water. If organic flocculant acrylamide is used instead of inorganic flocculant, the water purification capacity can be increased by more than 20% even without reforming sedimentation tank. In sewage treatment, the use of polyacrylamide can increase the ...