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Course Detail

Course Name Environmental Engineering II
Course Code 15CVL402
Program B. Tech. in Civil Engineering
Semester Seven
Year Taught 2019


Unit 1

Domestic Waste Water System: Importance and scope of sanitary engineering – Sewerage system – classification– relative merits and situations for adoption. Sources of wastewater – Quantity – fluctuations in flow and their significance. Storm runoff estimation. Factors affecting storm water drainage – empirical and rational methods – time of concentration.

Waste Water Pipe Hydraulics: Hydraulics of waste water flow – Hydraulic element charts – Design Criteria – construction procedure – Testing and maintenance – Shapes and materials of sewers – Sewer appurtenances – Design of storm water line – surface drains for storm water.

Characteristics: Wastewater characteristics and significance – Decomposition – cycles of decomposition – Dissolved oxygen – Biochemical Oxygen Demand – Formulation – Test for 5 day BOD – significance and limitations – Relative stability – Sewage sampling – population equivalent of industrial effluents – Effluent disposal standards.

Unit 2

Waste Water Treatment – Primary Treatments: Objectives – Selection of unit operation and process – Principle and Design of Preliminary Treatments: Screens, skimming tank – types, grease traps – grit chamber – proportional flow weir – Principle and Design of Primary Treatments settling tanks – Types – Design of sedimentation tanks.

Secondary Treatment Processes: Biological process – object, principles of action – Suspended culture systems – Attached culture systems – Activated sludge process and its types – Design of conventional activated sludge process – Oxidation / stabilization ponds – aerobic and facultative ponds, Trickling Filters (conventional and high rate) .

Sludge characteristics – Weight volume relationship, sludge conditioning, dewatering, sludge digestion – process and parameters. Design and Drawing (Detailed sketch) of Septic Tank, IS Code provisions – Methods of septic tank effluent disposal – Testing soil permeability for determination of area.

Unit 3

Disposal of Waste Water: Disposal on water – conditions favoring – standards and criteria for dilution – pollution and self-purification of streams – oxygen sag curve and stages of self-purification – Disposal on land – criteria methods of broad irrigation – subsurface irrigation – sewage sickness of soil.

Solid Waste Management: Solid waste management – causes, effects and control measures of urban and industrial wastes.

Sustainable Development: Sustainable development – Environmental Protection Acts – Introduction to EIA and ISO 14000.

Text Books

  1. Birdie G. S and Birdie J. S, “Water Supply and Sanitary Engineering”, Dhanpat Rai & Sons, 2010.


  • Garg S. K, “Environmental Engineering”, Vol. II, Khanna Publishers, 2004.
  • Duggal, K. N., “Elements of Environmental Engineering”, S Chand & Co. Ltd., 2007.
  • Mark J. Hammer and Mark J. Hammer Jr., “Water and Waste Water Technology”, Prentice Hall of India Pvt. Ltd., 2008.
  • Metcalf and Eddy, “Waste Water Engineering Treatment, Disposal & Reuse”, Tata McGraw Hill, 2003.

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