Unit 1
Water Supply Systems: Need for protected water supply – objectives of water supply system. Factors affecting per capita consumption, fire demand, fluctuations in rate of consumption – population forecasting – Design periods for water supply components.
Intake Works and Transportation: Intakes – types, location, requirements and features. Transportation of water – Types of conduits – relative merits, selection, joints, hydraulic design, and cross-connected parallel pipe to increase capacity – pipe laying and testing.
Quality and Analysis of Water: Impurities in raw water – causes – effects / significance – analysis – tests – Bacteriology of water, bacteriological analysis – Water borne diseases – Standards of water quality.
Unit 2
Treatment of Water – Conventional Treatment flow charts – Principles of coagulation, flocculation and sedimentation – Design principles of – Flash mixer –Design and drawing (Detailed sketch) of Flocculator and Sedimentation tank.
Filtration – Principles of Filtration – Classification. Constructional and operational features of slow sand filters and rapid sand filters – Design criteria. Design and drawing (Detailed sketch) of slow sand filters and rapid sand filters.
Disinfection – methods and disinfectants – Disinfection devices – Chlorination, other methods. Miscellaneous treatment methods – aeration, taste and odour control, iron and manganese removal, water softening, fluoridation and defluoridation and demineralization – Residue Management .
