Design of Treatment Plants

At the end of this course, the students should be able to: 1. discuss the details of the design of storm water and sewage systems; 2. explain the treatment of waste through biological and chemical processes; 3. familiarise with the treatment process of water and wastewater; and 4. draw treatment schemes such as activated sludge system, trickling filter, stabilization ponds.

Wastewater Storm water sewage: rational method for design. Preliminary treatment: flow measurement, weirs, flumes, flow separation, screening, storm water settlement, grit removal, overflow rates. Batch settlement analysis; radial and rectangular design. Secondary treatment: activated sludge process, percolating filters, oxidation ponds, biological kinetics and application in sludge treatment and disposal. Anaerobic digestion. Sludge processing, pumping and power requirements. Water Supply Flow diagrams for the treatment of surface and groundwater. Preliminary treatment: screening, coagulation, flocculation and sedimentation. Slow sand, rapid sand and pressure filters. Disinfection: water softening, iron and manganese removal. Chemicals for water Treatment.