Noise pollution/ effect of noise pollution

1. Presented by
Rahat Aziz
RN, B.Sc. in PHN (RU), MPH(BSMMU)
Nursing Instructor
Rangpur Nursing College, Rangpur

2. Introduction
 Noise pollution is a environmental issue that
affects individuals in both urban and rural areas.
 It is defined as excessive, unwanted, or
disturbing sound that disrupts the quality of life
and has adverse effects on human health and
well-being.

3. Sources of noise pollution
There are two types of sources
1. Industrial Source
a) Big machine sound
b) Railway/Aircraft
2. Non-industrial source
a) Natural
b) Man-made - Road traffic/construction

4. Causes of noise pollution
 Poor Urban Planning
 Motor Vehicles
 Musical Instruments
 Car Alarms
 Office Equipment
 Factory Machinery
 Construction Work
 Barking Animals
 Appliances
 Audio Instruments
 Loud Speakers
 Noise Created by People

5. Diseases caused by noise pollution
 High Blood Pressure
 Heart Attack
 Cancer
 Asthma
 Deafness
 Annoyance
 Stress
 Anxiety
 Bronchitis
 Insomnia

6. Control of noise pollution
Control at source
 Reducing the Noise Levels from Domestic
Sectors
 Maintenance of Automobiles
 Control over Vibrations
 Low Voice Speaking
 Prohibition on Usage of loudspeakers
 Selection of Machinery
 Maintenance of Machines

7. Control of noise pollution continue…
Using protection equipment
Job Rotation
Exposure Reduction
Hearing Protection
Protection at the Receiver End

8. Control of noise pollution continue…
Noise control techniques
Sound Insulation
Sound Absorption
Vibration Damping
Vibration Isolation
Urban Planning
Public Education and Awareness

9. Effects of noise
Auditory effects:
(i) Auditory fatigue
(ii) Deafness or hearing loss (may be temporary)
(iii)May rupture the tympanic membrane and
cause permanent loss of hearing.

10. Effects of noise continue..
Non-auditory effects:
• Interference with speech
• Annoyance-primarily a psychological response
• Diminished efficiency-inability to concentrate

11. Effects of noise continue..
3.Physiological effects
(i) Rise in blood pressure
(ii) An increase in heart rate and breathing
(iii) Rise in intracranial pressure
(iv) An increase in sweating

12. Effects of noise continue..
Other effects:
(i) General symptoms such as giddiness, nausea,
fatigue.
(ii) Interferes with sleep
(iii) Cause narrowing of pupil
(iv) Cause visual disturbance
(v) Affects night vision.

13. Methods of noise control
1. Noise control at source
Designed acoustic control in new equipment.
Isolation of noisy machines in a corner of the
factory.
Application of mufflers and other sound reducing
materials.
Reduction in the amount of noise transmitted
through the air or building structure.

14. Methods of noise control continue..
2. Control of transmission of noise This may be achieved by -
Building enclosures, and
Covering the room walls with sound absorbing materials.
3. Protection of exposed persons
Regular rotation of workers from noisy areas to comparatively
quiet posts in factories.
Use of ear plugs, ear muffs.
Periodical audiogram check-up.

15. Methods of noise control continue..
4. Legislation
Declaration of noise free area, e.g. hospitals, schools, colleges.
Compensation of workers if they have suffered a loss of ability to
understand speech due to excess noise.
5. Public education
Without people’s participation noise abatement programmed
cannot be succeeded. Public education through all available media
is needed.
It is to be high-lighted that noise abatement is important as a
community hazard.

16. Conclusion
It is evident that noise pollution is a growing
concern globally, affecting urban areas,
workplaces, and even our homes. Therefore, it is
crucial to take immediate action and implement
effective strategies to reduce noise pollution.

17. Thank You