A Study on Noise Pollution Generators in Tehran and Methods of Reducing and Controlling

摘要

Noise pollution is one of the environmental problems of the crowded city, Tehran. Everyday more than 2 million cars and heavy vehicles pass in Tehran and suburbs which not only makes beavy air pollution but also makes intolerable noise pollution. According to researches, the main reason of generating noise pollution is accumulation of vehicles and heavy traffic in peak times. Besides of vehicle traffics, the industrial centers and workshops in or out of Tehran are the second generators of noise pollutions which sometimes it is impossible to confront it. By increasing the population of Tehran, the noise pollution reaches to its apogee of its amount and the number of people who indisposed by the effects of the noise pollution increases. Permanently or temporary deafness is very common between workers and employees of many workshops and mental illnesses, quarrels, headache, nausea and stomach ulcer, wbich are very common between ordinary people, are effected by noise pollution. In this study, the noise pollution generators have been analyzed and reviewed. Also increasing arboriculture as an urban insulation, establishing Bus Rapid Transportation path, expanding subway lines, using two-layer noise insulators in buildings and correct installation and repairing on time the instruments at industrial factories and workshops have been analyzed as reducers and controllers of noise pollution.