Chemical Treatment

Duration: 49 frames

Year Published: 1950

Creator: Precipitation Plants With Two Stage Digestion U.S. Public Health Service

Format: Filmstrip

Description: Detailed treatment of chemical and stage digestion in grit precipitation chamber and clarifier. (CDC-5-158; 63 frames, synchronized disc, 7 minutes) Chestnut Blight U.S. Department of Agriculture, 1941. History of Chestnut Blight to 1940, symptoms, fungus, deterioration of blight-killer trees, and work of Bureau of Plant Industry to establish blight-resistant chestnuts. Revision

Complete Record: Series: Municipal Sewage Treatment Plants Series No. 2 Type: Filmstrip

Metadata Source:3434 U.S. Government Films