Noise pollution


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Details about how noise pollution can affect the environment and few case studies about it

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Noise pollution

  1. 1. Pollution Definition: The introduction into the environment, by people, of substances or energy liable to cause harm to living creatures or ecological systems. SOURCE: CNN
  2. 2. Pollution How did pollution begin? • More sophisticated lifestyles. • Growing needs of people. • Accelerated rates of human and economic activities.
  3. 3. Pollution Pollution Air Water Land Noise Pollution: production of unwanted sounds that are annoying, distracting or damaging to one’s hearing.
  4. 4. What is noise pollution? Any unwanted sound that penetrates the environment is noise pollution. In general noise pollution refers to any noise irritating to one's ear which comes from an external source.
  5. 5. WHAT IS NOISE POLLUTION? • Sound that is unwanted or disrupts one’s quality of life is called as noise. When there is lot of noise in the environment, it is termed as noise pollution. • Sound becomes undesirable when it disturbs the normal activities such as working, sleeping, and during conversations. • It is an underrated environmental problem because of the fact that we can’t see, smell, or taste it. • World Health Organization stated that “Noise must be recognized as a major threat to human well-being”
  6. 6. Classification of Noise Pollution There are 2 kinds of noise pollution. A.Community Noise/ Environmental Noise (non industrial noise pollution). • Air craft noise • Roadway noise pollution • Under water noise pollution B. Occupational Noise( industrial noise pollution)
  7. 7. COMMUNITY NOISE Community noise (also called environmental noise, residential noise or domestic noise) is defined as noise emitted from all sources, except at the industrial workplace. Main sources of community noise include road, rail and air traffic, construction and public work, and the neighborhood. Typical neighborhood noise comes from live or recorded music; from sporting events including motor sports; from playgrounds and car parks; and from domestic animals such as barking dogs.
  8. 8. Air craft Noise Pollution Noise from planes flying over residential areas impairs people's ability to work, learn in school and sleep, and consequently also results in lowered property values in affected areas. As passenger volume increases and new and larger airports are built, noise is becoming even more of a concern.
  9. 9. Roadway noise pollution Roadway noise is the collective sound energy emanating from motor vehicles. In the USA it contributes more to environmental noise exposure than any other noise source, and is constituted chiefly of engine, tire, aerodynamic and braking elements. In other Western countries as well as Lesser developed countries, roadway noise is expected to contribute a proportionately large share of the total societal noise pollution.
  10. 10. Under water noise pollution • UNP is intense human-generated noise in the marine environment. It is caused by use of explosives, oceanographic experiments, geophysical research, underwater construction, ship traffic, intense active sonars and air guns used for seismic surveys for oil and related activities.
  11. 11. OCCUPATIONAL NOISE The many and varied sources of noise is industrial machinery and processes include: rotors, gears, turbulent fluid flow, impact processes, electrical machines, internal combustion engines, pneumatic equipment, drilling, crushing, blasting, pumps and compressors. Furthermore, the emitted sounds are reflected from floors, ceiling and equipment
  12. 12. Sources of noise pollution • Street traffic • Rail roads • Airplanes • Constructions • Consumer products9
  13. 13. ROAD TRAFFIC NOISE In the city, the main sources of traffic noise are the motors and exhaust system of autos, smaller trucks, buses, and motorcycles.
  14. 14. Air Craft NOISE Now-a-days , the problem of low flying military aircraft has added a new dimension to community annoyance, as the nation seeks to improve its nap-of the- earth aircraft operations over national parks, and other areas previously unaffected by aircraft noise has claimed national attention over recent years.
  15. 15. Noise from railroads Rail car retarders can produce a high frequency, high level screech that can reach peak levels of 120 dB at a distance of 100 feet, which translates to levels as high as 138, or 140 dB at the railroad worker’s ear.
  16. 16. Construction Noise The noise from the construction of highways, city streets, and buildings is a major contributor to the urban scene. Construction noise sources include pneumatic hammers, air compressors, bulldozers, loaders, dump trucks (and their back-up signals), and pavement breakers.
  17. 17. Noise in building Apartment dwellers are often annoyed by noise in their homes, especially when the building is not well designed and constructed. In this case, internal building noise from plumbing, boilers, generators, air conditioners, and fans, can be audible and annoying
  18. 18. Some articles published in Times Of India Regarding Noise Pollution MUMBAI Anti-noise activist's open letter to Shah Rukh Khan September 1, 2013 | Vijay Singh , TNN MUMBAI: Anti-noise activist of Awaaz Foundation, Sumaira Abdulali, has written an open letter to actor Shah Rukh Khan with regards to his presence and participation in the rather noisy Dahi Handi festival celebrations. Abdulali has, in her letter, criticised SRK for promoting such loud, politically backed events wherein young children are continuously exposed to high-decibel sounds of the speakers kept very close to the revellers. PUNE Dhol-tasha equally deafening: Study September 11, 2013 | Ananya Dutta , TNN PUNE: The beats emerging from the dhol-tasha groups playing at pandals across the city may be foot-tapping, but the vibrations of these beats can pose serious health hazards, including disturbing the central nervous system, leading to fatigue, insomnia, headache and 'shakiness'. "Long-term exposure to these vibrations can also affect a person's circulatory and/or urological systems. The person playing the instrument is at the highest risk, but people in the vicinity cannot escape its effects...
  19. 19. Some articles published in Times Of India Regarding Noise Pollution MUMBAI Cyclothon at national park to create awareness about pollution caused by vehicles June 7, 2013 | TNN MUMBAI: People living around the Sanjay Gandhi National Park (SGNP) will participate in a cyclothon on Sunday to create awareness about noise and air pollution caused by motor vehicles. Around 150 people from the neighbourhood will pedal through SGNP, urging others to walk or cycle inside the park. Organized by forest officials and residents, the event will start at 7am.Park officials said that in the rains, many visitors arrive in motor vehicles, resulting in traffic jams. "Jams cause air and noise pollution, disturbing animals and harming the greenery," a forest official said. BANGALORE International Noise Awareness Day: MG Road, Marathahalli among noisiest hubs April 26, 2013 | Ishita Seth , TNN BANGALORE: MG Road, Marathahalli , Jalahalli Cross and Yelahanka police station are among places recording the highest noise pollution levels in the city. The pollution here is almost 35% over permitted levels. SPREADING AWARENESS This was disclosed by Vaman Acharya, chairperson of KSPCB, at an International Noise Awareness Day campaign here on Thursday. The campaign organized by the Karnataka State Pollution Control Board (KSPCB) at Bashyam Circle, Sadashivnagar was aimed at spreading awareness about health hazards caused by noise pollution and also to bring about a change in the attitude of people towards this cause.
  20. 20. Analysis of day time traffic noise level in Kolkata, India Road traffic noise was monitored at 26 locations in the month of November and December’2009 in Kolkata city and findings of the data are presented in this paper. Analysis of noise indices viz., noise exceedence factor (NEF), noise climate (NC), traffic noise index (TNI) and noise pollution level (NPL) reported severe violation of day time ambient noise standard prescribed by Central Pollution Control Board of India at each sampling station in peak (09:00 – 10:00 a.m.) and non-peak (02:00 – 03:00 p.m.)traffic hour. Fluctuation of road traffic noise levels was found higher in non-peak traffic hour. Annoyance due to road traffic noise was found higher in non-peak traffic hour as compared to the peak Case Study 1
  21. 21. Graph of Noise in DBs during theGraph of Noise in DBs during the Peak as well as Non Peak HoursPeak as well as Non Peak Hours
  22. 22. Conclusion Traffic noise at the sampling stations was observed above the national day time noise standard prescribed by Central Pollution Control Board of India (2000) in both peak and non-peak traffic hours. Slightly improved noise quality was observed in afternoon. Annoyance due to road traffic noise was found higher in non-peak traffic hour in comparison with the peak traffic hour. Leq(1hr) values were largely influenced by L10 than L90 in both the traffic hour. Lower Leq(1hr) value could be obtained by reducing unnecessary honking of horn. Improved traffic management practices, such as one way traffic movement, proper management of buses in the traffic stream may reduce traffic noise level to some extent. Proper noise barrier should be constructed under flyovers to mitigate
  23. 23. EFFECT ON BEACHED WHALE One of the best known damage caused by noise pollution is the death of certain species of beached whales, brought on by the loud sound of military sonar.
  24. 24. EUROPEAN ROBINS • European Robins living in urban environments are more likely to sing at night in places with high levels of noise pollution during the day, suggesting that they sing at night because it is quieter, and their message can propagate through the environment more clearly. Case Study 3
  25. 25. Level of tolerance • Normal level of tolerance is 80dbA. • Sound level below and above this is considered to be as noise pollution.
  26. 26. Effects of noise pollution on our Body • There are about 25000 hair cells in our ear which create wave in our ear, responding to different levels of frequencies. • With increasing levels of sound the cells get destroyed decreasing our ability to hear the high frequency sound.
  27. 27. Problems of Noise Pollution • Hearing Impairment • It Decreases the Efficiency of A Man • Lack of concentration • Abortion is caused • Pupil Dilation • Mental Illness • It Causes Heart Attack • Digestive problems •Temporary or permanent Deafness •Aggressive Behavior •Effect on Vegetation Poor Quality of Crops •Effect on Animal •Effect on Property •Sleep interference •Speech interference
  28. 28. EFFECT ON ANIMAL Noise pollution damages the nervous system of animal. Animal looses the control of its mind. They become dangerous Noise can have a detrimental effect on animals by causing stress, increasing risk of mortality by changing the delicate balance in predator/prey detection and avoidance, and by interfering with their use of sounds in communication especially in relation to reproduction and in navigation. Noise also makes species communicate louder, which is called Lombard vocal response. Scientists and researchers have conducted experiments that show whales' song length is longer when submarine- detectors are on.
  29. 29. Be cautious from today • Irreversible hearing loss. • Blood pressure rise of 5 to 10 mmHg on 8 hrs of exposure to even 70 db of sound level. • Hearing loss begins at 80- 90 dbA. 140 dbA is painful and 180 dbA can even kill a person. • Amplified rock music is 120 dbA. • Most of the electronic vehicles and motors are above 80 dbA level. • High noise levels may interfere with the natural cycles of animals, including feeding behavior, breeding rituals and migration paths.
  30. 30. Symptoms of occupational hearing loss • Feeling of fullness in the ear. • Sounds may seem muffled. • Cannot hear high frequency sounds. • Ringing in the ears while listening to the high frequency sounds. • Loud noise for a long period of time, or sudden burst of sound can cause occupational hearing loss. • Hearing that does not return after an acute noise injury is called a permanent threshold shift.
  31. 31. Actions taken and to be taken • There are a variety of effective strategies for mitigating adverse sound levels • use of noise barriers. • limitation of vehicle speeds • alteration of roadway surface texture. • limitation of heavy duty vehicles • use of traffic controls that smooth vehicle flow to reduce braking and acceleration, innovative tire design and other
  32. 32. Legistation • Noise Regulation Rules under the Environment (Protection) Act of 1986. • Features • Industrial- 75db • Commercial- 65 db • Residential zones- 55 db • Zones of silence • No public address system after 10:00 pm and before 06:00 am.
  33. 33. What can I do to make a difference?? • Persuade • Taking the help of police. • Observe car free day on 22nd of September. • Creating awareness about the ill effects of noise pollution. • Promising oneself not to be the part of pollution creator.
  34. 34. References:- • • • • Environmental studies by R. Rajgopalan •