Environmental Engineering – II
Teaching Scheme: Examination scheme:
Lecture: 3 hours per week Theory paper: 100 mark Practical: 2 hours per week Term Work: 25 marks Oral : 25Marks
Course Objectives:
1. To describe wastewater, its sources, characteristics and collection systems.
2. To design the various treatment processes for wastewater treatment.
3. To describe and design various low cost treatment processes for wastewater treatment.
4. To interpret various methods of wastewater disposal.
5. To explain various aspects of solid waste management.
6. To outline the effects of air pollution and its control measures.
7. To understand legal aspects related environmental protection.
Course Outcomes:
At the end of this course students will be able to learn to,
1. Explain sources, characteristics and methods of wastewater collection.
2. Design the primary and secondary wastewater treatment units.
3. Design low cost wastewater treatment units.
4. Apply the knowhow of effluent standards for wastewater disposal as per norms.
5. Explain the necessity and importance of solid waste management.
6. Describe air pollution, its effect and controlling techniques.
7. Summarize different legal aspects related to environment protection for sustainable development.
SECTION I
UNIT 1: (06)
Wastewater: Components of wastewater flows, wastewater sources and flow rate, Variations in flow rates and strength, wastewater constituents, Characteristic of Municipalwaste water, Problems on B.O.D. calculations, Quantity of storm water, Ground water infiltration.
Sewerage system: Types, Layout, Types of sewers, Collection system, Appurtenances, Design of sanitary and storm water sewers, Maintenance of sewerage systems Sewage and Sludge pumping, Location, Capacity, Types of pumps, Pumping station design
UNIT 2: (06)
Primary Treatment: Screening, comminuting, Grit removal, Oil and Grease trap Primary settling tank.
Secondary Treatment: Activated sludge process, Process design and operating parameters, modification of ASP, Operational problems,
Concept of trickling filter, Secondary Settling Tank
UNIT 3: (06)
Sludge: Characteristics, Treatment and disposal, Concept of anaerobic digestion, types of reactors.
Low cost wastewater treatment methods-Principles of waste stabilization pond. Design and operation of oxidation pond, aerobic & anaerobic Lagoons, Aerated Lagoon, Oxidationditch, Septic tank.
Selection of alternative Treatment process flow sheets, Concept of recycling and reuse of sewage.
SECTION II
UNIT 4: (06)
Stream pollution: Classification, Concept of Self Purification and DO sag curve. Streeter Phelp’s Equation.
Disposal of wastewater: methods, effluents standards for stream and land disposal as per MPCB and CPCB standards and legislation.
Concept of environmental impact assessment.
UNIT 5: (06)
Solid waste management: Definition, types, sources, characteristics. Functional outlines, Generation, storage, Collection, Processing techniques.
Methods of treatment of solid waste, Composting, Incineration, Pyrolysis and Sanitary land filling.
Concept of Hazardous waste management
UNIT 6: (06)
Air Pollution-Definition, Sources and classification of pollutants, Effects on man material and vegetation.
Introduction to Meteorological aspects such as atmospheric stability, mixing heights, and plume behavior.
Control of industrial air pollution-Settling Chamber, Bag Filters, Cyclone separators, Scrubbers, Electrostatic precipitators,
Introduction to global issues – Global warming, Acid rain, Ozone depletion, Photochemical Smog. Ambient air quality standards.
TERM WORK:
Term work shall consist of the following:
A. Characterization of Municipal Waste water (Any 5 of the following):
1. pH
2. Alkalinity
3. Solids
4. Chlorides
5. DO
6. BOD
7. COD
8. Sulphates
9. Oil & grease
10. Volatile acids
B. Demonstration of HVS and Auto exhaust analyzer.
C. Design of sewerage system and treatment system for a small urban area
D. Visit to sewage treatment plant.
RECOMMENDED BOOKS:
1. Peavey, H. S. Rowe, D.R., Environmental Engineering, McGraw-Hill Book Company.
2. Waste water Engineering, P. N. Modi.
3. Viessman W. and Hammer M.J. Water supply and pollution Control, Harper Collins College publishers.
4. Hammer M.J. Water and Waste water Technology, Prentice-Hall of India Private Limited.
5. Water Supply & Sanitary Engineering, G. S. Birdie, Dhanpat Rai & Sons, New Delhi.
6. Manual on sewerage and sewage Treatment-Government of India Publication.
7. Masters. G. M. Introduction to Environmental Engineering and Science.
8. Rao. M. N. and Rao H.V. Air pollution, Tata McGraw Hill, 1990.
9. Canter, Environmental Impact Assessment, TMH Publication.
10. Manual on Municipal Solid Waste Management, Ministry of Urban Development Govt. of India