How do we control noise pollution?
Noise pollution can be controlled at the source of generation itself by employing the techniques below:
- We can watch television programs, listen to radio or use the washing machines selectively to reduce noise in domestic sectors.
- Use any absorbing materials, like carpets to minimize noise generated from felling of items within the house.
- Prohibit the usage of loudspeakers in habitant zones unless necessary requirements, like engaging wide audiences, or functions.
- Send automobiles for servicing and tuning regularly. Try to reduce noise levels too by fixing silencers.
- Industries can maintain machines through proper lubrication and handling.
Noise pollution can also be controlled in the control of the transmission path of the noise:
Why? This is as a change in the transmission path will increase the length of travel for the wave and thus get absorbed, refracted or radiated in the surrounding environment.
What are some of the techniques we can employ then?
- Barriers can be installed between sources of noise and receiver to attenuate noise levels. However, at very large distances, the barrier becomes less effective because of the possibility of refractive atmospheric effects.
- Buildings can also be designed with suitable noise absorbing material for the walls, windows or ceilings.
- The Green belt development can attenuate noise levels through the nature such as by shrubs and trees.
- Efficient scheduling of jobs involving job rotations, to prevent workers from constantly being exposed to high levels of noise. Regulations have also prescribed that the continuous exposure of a worker to more than 8 hours of noise level of 90 db (A) is prohibited.
- Workers are provided with equipments like earmuffs, ear plugs for hearing protection. An attenuation of up to 32 dB can be achieved by using earmuffs!
We can also use protective equipment, the first step in the technique to gauge the intensity of the problem. Next we can identify the person suffering under the circumstance, and his exposure to noise levels.
The usage of the protective equipment and the worker¡¯s high levels of exposure to noise levels can be minimized by