21CV43 Public Health Engineering syllabus for CV

Introduction:

Water: Need for protected water supply, Demand of Water: Types of water demands - domestic demand, industrial, institutional and commercial demand, public use and fire demand estimation, factors affecting per capita demand, Variations in demand of water, Peak factor.

Design period and factors governing design period

Methods of population forecasting and numerical problems. Physico chemical characteristics of water( Analysis to be conducted in laboratory session). Sampling.

Water Treatment:

Objectives, Unit flow diagrams – significance of each unit, Aeration processLimitations and types,

Sedimentation -

Theory, settling tanks, types and design with numericals, Coagulation and flocculation, types of coagulants,(Optimisation of coagulant to be carried out in the laboratory),

Filtration:

mechanism, theory of filtration, types offilters: slow sand, rapid sand and pressure filters. Operation and cleaning. Design of slow and rapid sand filter without under drainage system (numericals)

Disinfection:

Methods of disinfection with merits and demerits. Breakpoint of chlorination ( Analysis to be conducted in laboratory session) Softening: Lime soda and Zeolite process.

Wastewater:

Introduction:

Need for sanitation, methods of sewage disposal, types of sewerage systems,

Treatment of municipal waste water:

Waste water characteristics( Analysis to be conducted in laboratory session): sampling, significance and techniques, physical, chemical and biological characteristics,Numericals on BOD,

Treatment Process:

flow diagram for municipal waste water Treatment unit operations and process,Screens: types, disposal. Grit chamber, oil and grease removal. primary and secondary settling tanks (no numericals), Suspended growth system - conventional activated sludge process and its modifications.

Attached growth system –

trickling filter, numericals on Trickling filters, bio-towers and rotating biological contactors. Principle of stabilization ponds, oxidation ditch, Sludge digesters(aerobic and anaerobic), Equalization., thickeners and drying beds.

EXPERIMENTS

Experiments to be carried out are:

1. Determination of pH, Conductivity, TDS and Turbidity.

2. Determination of Acidity and Alkalinity

3. Determination of Calcium, Magnesium and Total Hardness.

4. Determination of Dissolved Oxygen

5. Determination of BOD.

6. Determination of Chlorides

7. Determination of percentage of % of available chlorine in bleaching powder sample, Determination of Residual Chlorine and chlorine demand.

8. Determination of Solids in Sewage: (i) Total Solids, (ii) Suspended Solids, (iii) Dissolved Solids, (iv)Volatile Solids, Fixed Solids (v) Settleable Solids.

9. Determination of optimum coagulant dosage using Jar test apparatus.

10. Determination Nitrates and Iron by spectrophotometer

11. Determination of COD(Demonstration)

12. 13. Air Quality Monitoring (Demonstration)

Course outcome (Course Skill Set)

At the end of the course the student will be able to :

• Estimate average and peak water demand for a community.
• Evaluate water quality and environmental significance of various parameters and plan suitable treatment system.
• Design the different units of water treatment plant
• Understand and design the various units of wastewater treatment plant
• Acquire capability to conduct experiments and estimate the concentration of different parameters and compare the obtained results with the concerned guidelines and regulations.

Assessment Details (both CIE and SEE)

• The weightage of Continuous Internal Evaluation (CIE) is 50% and for Semester End Exam (SEE) is 50%.
• The minimum passing mark for the CIE is 40% of the maximum marks (20 marks out of 50) and for the SEE minimum passing mark is 35% of the maximum marks (18 out of 50 marks).
• The student is declared as a pass in the course if he/she secures a minimum of 40% (40 marks out of 100) in the sum total of the CIE (Continuous Internal Evaluation) and SEE (Semester End Examination) taken together.

CIE for the theory component of the IPCC

Two Tests each of 20 Marks (duration 01 hour)

• First test after covering 40-45 % of the syllabus
• Second test after covering 85-95% of the syllabus Two assignments each of 10 Marks
• First assignment at the end of 4th week of the semester
• Second assignment at the end of the 9th week of the semester Scaled-down marks of the average of two tests and other assessment methods will be CIE marks for the theory component of IPCC for 30 marks.

CIE for the practical component of IPCC

• On completion of every experiment/program in the laboratory, the students shall be evaluated and marks shall be awarded on the same day. The 15 marks are for conducting the experiment and preparation of the laboratory record, the other 05 marks shall be for the test conducted at the end of the semester.
• The CIE marks awarded in the case of the Practical component shall be based on the continuous evaluation of the laboratory report. Each experiment report can be evaluated for 10 marks. Marks of all experiments’ write-ups are added and scaled down to 15 marks.
• The laboratory test (duration 02/03 hours) at the end of the 15th week of the semester /after completion of all the experiments (whichever is early) shall be conducted for 50 marks and scaled down to 05 marks. Scaled-down marks of write-up evaluations and tests added will be CIE marks for the laboratory component of IPCC for 20 marks.

SEE for IPCC

Theory SEE will be conducted by University as per the scheduled timetable, with common question papers for the course (duration 03 hours)

1. The question paper will have ten questions. Each question is set for 20 marks.

2. There will be 2 questions from each module. Each of the two questions under a module (with a maximum of 3 sub-questions), should have a mix of topics under that module.

3. The students have to answer 5 full questions, selecting one full question from each module.

4. Marks scored shall be proportionally scaled down to 50 Marks.

The theory portion of the IPCC shall be for both CIE and SEE, whereas the practical portion will have a CIE component only. Questions mentioned in the SEE paper shall include questions from the practical component).

• The minimum marks to be secured in CIE to appear for SEE shall be 12 (40% of maximum marks30) in the theory component and 08 (40% of maximum marks -20) in the practical component. The laboratory component of the IPCC shall be for CIE only. However, in SEE, the questions from the laboratory component shall be included.
• The maximum of 04/05 questions is to be set from the practical component of IPCC, the total marks of all questions should not be more than 20 marks.
• SEE will be conducted for 100 marks and students shall secure 35% of the maximum marks to qualify for the SEE. Marks secured will be scaled down to 50.
• The student is declared as a pass in the course if he/she secures a minimum of 40% (40 marks out of 100) in the sum total of the CIE (Continuous Internal Evaluation) and SEE (Semester End Examination) taken together.

Textbooks

• Howard S. Peavy, Donald R. Rowe, George T, “Environmental Engineering” - Tata McGraw Hill, New York, Indian Edition, 2013
• S. K. Garg, Environmental Engineering vol-I, Water supply Engineering – M/s Khanna Publishers, New Delhi2010
• B.C. Punmia and Ashok Jain, Environmental Engineering I-Water Supply Engineering, Laxmi Publications (P) Ltd., New Delhi2010.
• B C Punmia, “Environmental Engineering vol-II”, Laxmi Publications 2nd, 2016
• Karia G.L., and Christian R.A, “Wastewater Treatment Concepts and Design Approach” , Prentice Hall of India Pvt. Ltd., New Delhi. 3rd, Edition, 2017
• S.K.Garg, “Environmental Engineering vol-II, Water supply Engineering”, Khanna Publishers, – New Delhi, 28th edition and 2017
• CPHEEO Manual on water supply and treatment engineering, Ministry of Urban Development, Government of India, New Delhi.
• Mark.J Hammer, Water & Waste Water Technology, John Wiley & Sons Inc., New York,2008.