level 2 env eng intro

7/29/2019 Level 2 Env Eng Intro

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Environment is ………….

Why do you need to be concerned about theenvironment ?



Environment may be defined asThe aggregate of external conditions that

influences the life of an individual in a

population- (specifically man)

Physical Environment – Natural

Environment – Air, Water, Soil, Nature

Cultural Environment – Social and

economic Environment



The Earth is like a Space Shuttle!

Earth is travelling at very

high speed around the sun

There are resources on earth

for us to use during our

journey - water, air, soil,

minerals, plants and animals

But we can not get anything

from outside, except the sun‟s

light energy



Resources Anything that is obtained from the physical

Environment to meet human needs is a resource.

A „Material‟ becomes a resource only if it is usedfor human needs

For a material to become a resource

People should know how to extract and use it

– human ingenuity

It should be economically viable to use it

-- economics

It should be acceptable to the people

– cultural beliefs



Types of Resources

Direct Solar

Energy

Wind, Tides,

Flowing Water

Perpetualresources

Fresh Air Fresh Water Fertile Soil Plants and Animals(Bio Diversity)

Renewable

Resources

Fossil Fuel Metallic and Non

Metallic Minerals

Non-renewableResources

Resources



We have to be concerned, because of:

Environmental Degradation-- Processes that deplete or destroy a region‟s resourcebase Loss of productive land - due to housing, roads, reservoirs

Water-logging, salinization- due to extensive cultivation withoutproper drainage

Flooding, Soil erosion, Loss of habitats for birds and animals- due toDe-forestation

Land desertification - due to Overgrazing

Depletion of soil nutrients – due to cultivation without proper soilmanagement



And….. Environmental Pollution - Changes to the

environment that can affect health, survival or

activities of humans or other forms of life in an

undesirable way

Water Pollution – domestic,

industrial

Air Pollution – industrial

transport

Noise – industrial, traffic

Soil Pollution – municipal

solid waste, hazardous

waste



Causes of Environmental Degradation

Over population

Export of Resources

Uncontrolled Common Properties

- „Tragedy of the Commons‟



Environmental Issues:

Local Issues – Degradation, pollution of

local environment

Regional Issues – Acid Rain, River and

Marine Pollution

Global Issues – Global Warming,

Depletion of Ozone Layer



Concerns about the impact of Human Activities

on the Natural Environment have stimulated

a new area of Engineering – known as“Environmental Engineering”.

Environmental Engineering

Environmental Engineers combine their knowledge of the natural, social and physical sciences to

analyze and improve the interaction between

society, technology and the environment.



Environmental Engineering is:

A Profession striving to Balance

Development and the Environment

by providing the technological

inputs for Sustainability.

We look at

Human Welfare Industrial Development, and

Environmental Protection



Responsibilities of

The Environmental Engineer

Water Supply

and

Sanitation

Water

Pollution

Control

Air Quality

and

Noise Control

Solid Waste

Management

Environmental

Engineer



Drinking Water Supply

Objective

Provide Safe Drinking Water in Adequate

Quantity at Accessible Points

Functions of the Engineer

1. Planning & Design of Water Supply Schemes

2. Construction

3. Operation

4. Maintenance

5. Monitoring of water quality



Existing Greater Colombo Water Supply System Church

Hill

ElieHouse

Maligakanda

TP

TP

TP&PumpHouse

Jubilee

Dehiwala

G4-1

Kolonna

wa

Maharag

ama

Moratuwa G5

Panadura G7

Dehiwala

G4-2

Labugama

Kalatuwawa

Moragasmulla

Tower G2Kolonnawa

Tower G1Weragoda

Tower G0

S - Tower

Gotatuwa

KohuwalaTower G9

DehiwalaTower G10

Zoysapura

PanagodaHomagamaMattegoda

RukmalgamaPannipitiya

Yower

FromKalutara

Ref drg for distributionfrom Church Hill

Battaramulla

Jayawadanagama

PanaduraTower G12

J'puraHospital

PagodaTower G3Mirihana

Tower G8

MaharagamaTower

PiliyandalaTower

Kaduwela

BiyagamaEPZ

PitakotteBooster

Govt Fac.Pet. Co

Stanley P.P.Kotikawatta

Megoda Kolonnawa etc.

Pelanwatta

Ambatale

MoratuwaTower

G6

GREATER COLOMBO WATER SUPPLY SCHEME( A simplyf ied version )

W.J.De Silva

14/03/98

River Intake

Kelani Ganga

KaduwelaTower

Pannipitiya



Wastewater Disposal

Objective

Disposal of Wastewater without harmingthe environment


1. Human Wastewater Disposal Design & maintenance of sewer

systems

Design, operation and maintenance of treatmentplants

2. Industrial Wastewater Disposal

Waste Minimization

Design of wastewater treatment plant

Operation and maintenance of disposal systems



Water pollution control and restoration

Objectives

1. Prevent deterioration of water bodies

2. Restoration of polluted water bodies


1. Treatment of waste water before

discharging to water bodies

2. Water quality monitoring

3. Development of models for studying pollution

4. Remedial actions for polluted water bodies



Objective

Prevention of pollution of air by controllingemission of harmful substances to the

atmosphere.

Air Pollution Control


1. Design, operation and maintenance of air

pollution control devices

2. Development of models to study behavior of

pollutants.



Noise control

Objective

Reduction of environmental noise due to

various activities


Measurement & control of noise from industries,

traffic, generators etc.



Solid Waste Management

Objectives1. Reduction, recycling and reuse of waste

2. Proper disposal of waste without

polluting the environment


1. Find methods of reduction of solid wastegeneration

2. Collection and transport of solid waste3. Design, construction, operation and

maintenance of disposal facilities

4. Recycling of waste products



Opportunities

Drinking Water Supply and Sanitation

1. National Water Supply and Drainage Board

2. Local authorities-Municipal Councils, UrbanCouncils

3. Ministry of Housing & Urban Development

4. Non Governmental Organizations

5. World Bank, ADB & other funding agencies

Environmental Pollution Control

1. Local authorities -Municipal Councils, UrbanCouncils, Pradeshiya Sabhas

2. Industries

3.

Consultancy Firms



Environmental pollution control & solid waste

management

1. Research Organizations2. Central Environmental Authority, BOI

3. Ministry of Forestry & Environment

4. Provincial Councils

5. Industries

6. Consultancy firms

Environmental Impact Assessments and

Project Appraisal

1. Development Banks – NDB, DFCC, etc.

2. Funding agencies

3. Consultancy firms



OUR CURRICULUM



Level 2 – Mechanics, Concepts and

Planning CE 208 - Fundamentals of Environmental

Engineering

Objective:To sensitise the students to

environmental issues and to introducethe students to the subject of environmental engineering



CE 208 - Fundamentals of Environmental Engineering Syllabus –

1. Introduction to Environmental Engineering

(1.5 hours)

2. Principles of Ecology (1.5 hours)

3. Water Quality (1.5 hours) 4. Pollution control in Surface and Ground Water

(3 hours)

4. Solid and Hazardous Waste Management

(3 hours)

5. Air Pollution and Noise Control (3 hours)6. Water Supply Engineering (1.5 hours)

7. Wastewater Collection and Treatment (3 hours)

8. Environmental Impact Assessment (3 hours)



Level 3 –

Analysis and Design CE 310 - Environmental Engineering Design

Objective:

To give the studentsa) Design principles of water supply and

wastewater collection systems,

b) Basic knowledge of chemistry,

microbiology & ecology required. andc) An introduction to water and

wastewater treatment



Level 4 – Management, Applications and

Projects

Optional Subjects:

1. CE 428 - Environmental Management

2. CE 437 - Environmental Pollution Control3. CE 438 - Water and Wastewater Treatment

4. CE 439 - Environmental Impact Assessment

5. CE 440 - Rural Water Supply and Sanitation6. CE 420 - Research Project



Environmental Engineering Minor

At least 9 credits from Optional Subjectsoffered by the Env. Eng. Division

Research project in a relevant area



Conclusion

You may not become an

Environmental Engineer, but please

remember that your actions

have an effect on the future of the Earth,and you can contribute by being thoughtful about

your responsibility in Protecting the Environment.

So you see, you can make a definite

contribution to the improvement of

life on earth by being a Civil Engineer.

level 2 env eng intro

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