Although many people think that the only dangerous pollution in the world is air pollution, sometimes noise pollution is much more dangerous than air pollution. Prolonged noise pollution in the workplace destroys hearing so gradually and painlessly that you will not notice this gradual loss.
What is noise pollution?
Scientific cover - There are pollutants in the environment and the workplace that can endanger the comfort and health and possibly the safety of people. These pollutants can be in the air, land and water. Air pollutants include physical and chemical. In the field of "air pollution", physical pollutants are of great importance. "Physical pollutants" include "radiation and field pollution", "light pollution" and " sound pollution ". The correct word in this regard is "Noise Pollution" and the common word " noise pollution " is not scientifically correct, because if we accept it, we should say "air pollution", "landscape pollution" and the like in similar cases.
One of the problems of urban management in the field of environmental protection is noise pollution . Although sound has adverse physical, mental and social effects and there is a consensus on its prevention and control, it is inevitably produced and disseminated in the environment and the workplace, so that even in developed industrial countries it is still one of the major problems. Urban environmental management is the issue of noise pollution. In addition to the hazards listed for exposure to noise, the presence of noise pollution in the environment is the cause of energy loss by various urban and industrial sources, and from the perspective of optimizing energy use should also be considered.
Noise pollution from road traffic depends on the amount of traffic and the speed of the cars
The unit of measurement for noise pollution is "decibels" and the tolerance threshold of the human ear is about 130 decibels. Sound propagation has different behaviors depending on whether it takes place in open or closed environment. In an open environment, sound waves continue to propagate to the point of destruction without colliding with an obstacle. Environmental conditions have an undeniable effect on how sound is emitted. Although humans are accustomed to noise, in fact, noise pollution is a cause of fatigue and reduces the capacity of human work, both in mental jobs and in simple physical jobs. Noise pollution has an effect on a person's mental and emotional state, causing problems in Human adaptation to the work environment and even social and family. The result is reduced productivity.
The permissible limit of noise pollution, which is also called the standard of noise pollution, is the amount and special characteristics that are selected according to the principles of environmental protection and based on the unit of noise measurement for sources of noise pollution and emitted space and various environments. .
Ringing or tinnitus in people who are constantly exposed to loud noises is the first sign that is usually seen in workers working in noisy factories, and unfortunately research has shown that in many There is no cure for cases of hearing loss due to noise pollution, and hearing aids can only amplify sounds but can not restore normal hearing and the person will permanently lose his proper hearing. Gives.
Noise pollution affects a person's mental and emotional state
What to do against noise pollution?
Like it or not, living in big cities is not possible without noise pollution. Maybe if you are sitting at your desk in the office, the voice of the client, the conversations of colleagues, the sounds of the street, the horns of cars, the audible alert of your phone messages and even the project you are working on are considered as some kind of noise pollution. But the best techniques against noise pollution can be considered occasional trips, meditation, yoga, cold showers and study.
Effects of noise pollution
Most people are accustomed to the abnormal noises of their living environment over time, and because they consider the noise pollution paradigm to be an integral part of their lives, they do not feel the discomfort caused by its harms. Finally, hormonal disorders and unhealthiness, one of the objective symbols of which is hearing loss, have made it impossible for a person to communicate effectively and efficiently with the people and the community around him, which in turn reduces his quality of life and mental health. And will put a burden on society and individuals in fact.
The simplest and most tangible complication of annoying noise is hearing loss. A healthy ear hears vibrations with a frequency between 20 and 20,000 Hz. Vibrations with a frequency higher than 20,000 Hz are called ultrasonic 4 and less than 20 Hz are called subsonic 5.
Animal experiments show that noise pollution as high as 150-160 decibels is lethal to some animals. Before death, these animals experience localized seizures, paralysis, and tremors, which are the symptoms of paleness and high blood pressure in humans. The decrease in body temperature and the contraction of the arteries increase and the body temperature decreases.
One of the most common diseases caused by noise pollution that sawmill workers who tolerate the sound of 125 decibels, when they return home at night, their fingers turn green and then white, which is a symptom of the disease. Is vasospastic, which results from constriction of blood vessels and insufficiency of blood flow; This condition is known as renal disease or dead fingers.
Noise pollution affects the cardiovascular system and blood pressure to the digestive system. In our society, the noise of urban transportation is known as noise pollution that has psychological effects. These effects include aggression, stress and anxiety. In fact, where there is more noise, people are more psychologically affected.