In this document, I've described about types of air pollution, causes of air pollution and how we can reduce air pollution.

1. Air Pollution and it’s Control
Md Shariful Hoque
ID: 2018000400038
Batch: 37th
Dept. Of Textile Engineering
Southeast University

2. Air Pollution
Air pollution is the presence of substances in the atmosphere that are
harmful to the health of humans and other living beings, or cause damage
to the climate or to materials

3. Air Pollutants & it’s type
 An air pollutant is a material in the air that can have adverse effects on
humans and the ecosystem. The substance can be solid particles, liquid
droplets, or gases. A pollutant can be of natural origin or man-made.
Primary air pollutants
-Carbon monoxide
-Sulfur dioxide
-Nitrogen oxides
-Hydrocarbons
-Particulate matte
Secondary air pollutants
-Ozone
-PAN (peroxy acetyl nitrate)
-Photochemical smog
-Aerosols and mists (H2SO4)

4. Indoor air polluition
 Indoor air pollution refers to chemical, biological and physical contamination of indoor air.
 Indoor air pollution is caused by burning solid fuel sources – such as firewood, crop waste, and dung – for
cooking and heating.
 Indoor air pollution is a leading risk factor for premature death.
 “The world’s largest single environmental health risk”-The WHO
 6% of deaths in low income countties are attributed to indoor air pollution

5. Causes of indoor Air pollution
Formaldehyde
Tobacco
smokes
Synthetic
fragments
Biological
pollutants
Asbestos
Perfume
Air
freshnesrs

6. Outdoor air pollution
 The pollution of outdoor air with a dynamic mixture of pollutants from
both natural and manmade sources is known as Outdoor Air pollution
 The common sources of outdoor air pollution are emissions caused by
combustion processes from motor vehicles, solid fuel burning and
industry.
 outdoor air pollution responsible for 3.4 million deaths.
 58% due to ischaemic heart disease and strokes, 18% due to chronic
obstructive pulmonary disease and acute lower respiratory infections ,
6% of deaths were due to lung cancer

7. Causes of outdoor air pollution
• produce from automobile , Bus truck exhaust ,
fuel burning
Particulate matter
• when Nitrozen oxides and voltaic organic
chemically reacts under sunlight
Ozone
• Produce from high tempareture combustion and
atmospheric reaction
Nitrogen dioxides
Carbon Monoxide
• when carbon containing fuel do not
burned completely
Sulphur dioxide • smelters , paper mills , power plants
and steel manufacturing plants

8. Main sources of air pollution
❖ Boilers
❖ Thermo pack
❖ Diesel generator
❖ Sulphur di oxide gas
❖ Oxide of nitrogen gas etc
Textile industries generate all three kinds of waste i.e. liquid effluents, air
emissions and solid wastes.
POLLUTION PROBLEMS IN TEXTILE INDUSTRY

9. Spinning mill
➢ Maintaining m/c parts.
➢ Maintaining hardness of rubber cots.
➢ Maintaining RH%.
➢ Using overhead pneumatic cleaners.
➢ Cyclone filters, cloth filters.
Wet processing unit
❖ Electrostatic precipitator.
❖ Scrubber.
❖ Oxidizer.
General control measures
▪ Height of chimneys
▪ Gravitational and inertial separator
▪ Filters
How we can reduce air pollution in textile
industries

10. Impact of air pollution on human
 Short term effects
illnesses (pneumonia or bronchitis) ,
irritation to the nose, throat, eyes, or skin ,
headaches, dizziness, and nausea. Bad smells ,
 Long term effects
heart disease, lung cancer, and respiratory diseases such as emphysema.
damage to people's nerves, brain, kidneys, liver, and other organs.

11. Impact on animals and plants
 pets suffer an increased risk of tumors.
 Indirectly effect on the food chain of fish.
 Blindiness of cattle and birds , Respiratory problems in cattle and reduced
wool production in sheep , Stomach and intestinal disorders in cattle
(iron,fluride , arsenic containing flue gass) , reduce food chain of birds.
 Eutrophication is occurring which cause a disequilibration in the diversity of
fish and their deaths.
 90% of the yield losses due to air pollution in the plant world come from ozone
 The pollutants induce oxidative stress in the plant with the production of free
radicals (hydroxyl radicals) and reactive oxygen derivatives (ROD) that cause
damage in the leaf.
 impairment in photosynthetic rhythm and metabolism

12. Impact on environment
Global
warming
Climate
change
Smog effect
Acid rain
Deteriotion of
fields
Extinction of
animal species

13. Control and solution of air pollution
how we can control the air pollution With device
 Hight of chimeny
 Cyclones
 Ventury scrubbers
 Electrostatic Precipitation
 Fabric filters

14. Hight of chimney
The height of a chimney influences its
ability to transfer flue gases to the
external environment via stack effect.
Additionally, the dispersion of pollutants
at higher altitudes can reduce their
impact on the immediate surroundings.
The dispersion of pollutants over a
greater area can reduce their
concentrations and facilitate
compliance with regulatory limits.
Control air pollution with device

15. Cyclones–
Cyclone separators or simply cyclones are
separation devices (dry scrubbers) that
use the principle of inertia to remove
particulate matter from flue
gases. Cyclone separators is one of
many air pollution control devices known
as precleaners since they generally
remove larger pieces of particulate
matter
Control air pollution with device

16. Scrubber–
scrubbers are pollution control devices
that use liquid to wash
unwanted pollutants from a gas stream,
or that inject a dry reagent or slurry into a
dirty exhaust stream to "wash out" acid
gases. Industrial scrubbers are one of the
primary devices that control gaseous
emissions, especially acid gases.
Control air pollution with device

17. Electrostatic Precipitation
An electrostatic precipitator is a type of filter
(dry scrubber) that uses static electricity to
remove soot and ash from exhaust fumes
before they exit the smokestacks. This one
common air pollution control device. Most
power stations burn fossil fuels such as coal or
oil to generate electricity for use.
Control air pollution with device

18. Fabric filter
A baghouse, also known as a
baghouse filter, bag filter, or fabric filter is
an air pollution control device and dust
collector that removes particulates or gas
released from commercial processes out
of the air.
Control air pollution with device

19. Control the air pollution without devices
 Activated carbon
Removal of Indoor Air Pollutants Using
Activated Carbon
 Biofiltration
1. onstructed wetlands and natural
wetlands
2. Slow sand filters
3. Treatment ponds
4. Green belts
5. Green walls
6. Riparian zones, riparian
forests, bosques

20. Steps should take personally to reduce Air pollution
 Using public transport
 Use cycling while instead of vehicle while short way commuting.
 Turn of light when not using it
 Recycle & reuse
 Reduction of forest fires and smoking
 Use of fan instead of Air condition
 Avoid use of Crackers
 Avoid use of product containing chemical
 Implement afforestation

21. Step should take Government to reduce air pollution
 Retrofitting Of buses , heavy good vehicle and black cabs
 Electrification of public vehicles
 Confirm using catalytic converters in vehicles
 Cultivating a safer and more attractive environment for cycling
 Creat green space in cities
 Reduce the burning of Stubble in open field
 Compulsory PUC (pollution under control ) certificate of petrol driven vehicles which
test for carbon monoxide and hydrocarbon
 Permission to use only pure diesel with a maximum of 500 PPM Sulphur as fuel for
vehicle
 Use of non polluting compress gass like CNG as fuel of buses and trucks
 Compulsory mixing of 20% ethyl Alcohol with petrol and 20% biodiesel with diesel .
 Improving Air Quality Management

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*Soni, R., 2018. REVIEW ARTICLE OUTDOOR AIR POLLUTION AND HEALTH: A COMPREHENSIVE REVIEW. An exploratory study of
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* Zhang, J., 2003. Indoor air pollution: A global health concern, Volume 68. (Tanjila Toma)
* Sameer Kumar & Dhruv Katoria, 2013. Air Pollution and its Control Measures. International Journal of Environmental Engineering and
Management, Volume 4(Number 5), pp. 445-450. (Imrul Hossain)
http://www.ripublication.com/ ijeem.htm
*Weiner, R., 2003. Environmental Engineering (Fourth Edition). Fourth Edition ed. s.l.:Davis.( Imrul Hossain)
https://doi.org/10.1016/B978-075067294-8/50020-8Get
*AJES SIAN JOURNAL OF ENVIRONMENTAL SCIENCE VOLUME 8 | ISSUE 1 | JUNE, 2013 | 64-66 (Kazi )
http://www.researchjournal.co.in/upload/assignments/8_64-66.pdf
*. DAVID GREGORY & OSCAR MCLAUGHLIN,, 2016( sharif)
https://www.aqi.in/blog/10-best-ways-to-reduce-air-pollution/
Imrul hasan
Refferences

23. Thank you