PUBLIC HEALTH ENGINEERING (21CV43)

PUBLIC HEALTH ENGINEERING

Course Code 21CV43 
CIE Marks 50
Teaching Hours/Week (L:T:P: S) 2+2+2+0 
SEE Marks 50
Total Hours of Pedagogy 50 
Total Marks 100
Credits 4 
Exam Hours 3

Module-1

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.

Module-2

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)

Module-3

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,

Module-4

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.

Module-5

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 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)

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.

Web links and Video Lectures (e-Resources):

Lecture 01: Background and Course Introduction

https://youtu.be/yDnrv-oGSBc

Lecture 02: Water Sources and Availability

https://youtu.be/K4Vty0cmybI

Lecture 03: Water Uses

https://youtu.be/9H7dPkWOsjA

Lecture 04: Water Supply Key Issues and Concerns

https://youtu.be/JueYGPbsflw

Lecture 05: Urban water services and water supply systems

https://youtu.be/bCKm9KkcQtw

Lecture 06: Urban water services and water supply systems

https://youtu.be/s0hy0ZlM1bA

Lecture 07: Components of Water Demand

https://youtu.be/mVmErXpIp64

Lecture 08: Fluctuations in Water Demand

https://youtu.be/qXUwy5OnX9Q

Lecture 09: "Concept of Design Period and Design Population Need to Forecast Population

Population Forecasting Methods

https://youtu.be/QyLdA_qhUog

Lecture 10: Demand Forecasting and Design Capacities

https://youtu.be/rKTwjvx7E8A

Lecture 11: Water Sources and Collection of Water

https://youtu.be/TvEGgZw1El4

Lecture 12: Surface Water Intakes

https://youtu.be/GcQOyAdG5OM

Lecture 13: Surface Water Intakes Systems

https://youtu.be/r1oJtm_SXz4

Lecture 14: Groundwater Intake

https://youtu.be/Zo1p7uRDEmM

Lecture 15: Well Interferences,Well losses and Efficiency

https://youtu.be/dRU5M_WICU0

Lecture 16: Raw water Conveyance and Pumping

https://youtu.be/iQwEoEhujTc

Lecture 17: Practice Problems

https://youtu.be/e5bduQiz5NY

Lecture 18 : Raw Water Storage

https://youtu.be/WZlI7kWoUjE

Lecture 19 : Treated Water Storage

https://youtu.be/BuZ48afjd04

Lecture 20 : Placement, Design and Construction of Storage Reservoirs

https://youtu.be/nQCZbXaBb1o

Lecture 21 : Practice Problems on Reservoir Capacity Estimation

https://youtu.be/yuPLzQvmU-c

Lecture 22 : Water Quality and Water Pollutants

https://youtu.be/fZPry6BENPI

Lecture 23 : Water Quality Parameters

https://youtu.be/6VuHxD3t9kw

Lecture 24 : Philosophy of Water Treatment

https://youtu.be/6I-eBqE7Hew

Lecture 25 : Water Treatment Units Screening and Aeration

https://youtu.be/QsWp_HIZqPs

Lecture 26 : Water Treatment Units Sedimentation

https://youtu.be/T1M4Ecjwq7Q

Lecture 27 : Practice Problems On Sedimentation

https://youtu.be/Zlh2mpOjIMU

Lecture 28: Coagulation and Flocculation: Theory

https://youtu.be/aAo2bBaF0yU

Lecture 29: Coagulation and Flocculation: Selection and Application

https://youtu.be/44p0lN31ogo

Lecture 30: Coagulation and Flocculation: Design Operation and Process Control

https://youtu.be/v0TDfCz_jLU

Lecture 31: Filtration Theory and Slow Sand Filters

https://youtu.be/nuJQe9F_2zI

Lecture 32: Rapid Sand Filter: Filter Media and Components

https://youtu.be/3qw3sKcuQlY

Lecture 33: Rapid Sand Filters and Pressure Filters

https://youtu.be/PEX_0DebrSQ

Lecture 34: Practice Problems Coagulation Flocculation and Filtration

https://youtu.be/73jxsBCDuq4

Lecture 35: Disinfection Basic

https://youtu.be/d4UG9Xivuik

Lecture 36: Chlorination

https://youtu.be/L3eSkeOU3jY

 Activity Based Learning (Suggested Activities in Class)/ Practical Based learning

http://nptel.ac.in

 https://swayam.gov.in

 https://www.vlab.co.in/participating-institute-amrita-vishwa-vidyapeetham