Which of the following will be useful control strategies to check outdoor pollution with the “fine” paiculate matter?
Correct Answer: Restriction on the use of two engines
Description: Prevention and control of air pollution The control of air pollution is ultimately an engineering problem. The WHO has recommended the following procedures for the prevention and control of air pollution : (a) Containment : That is, prevention of escape of toxic substances into the ambient air. Containment can be achieved by a variety of engineering methods such as enclosure, ventilation and air deaning. A major contribution in this field is the development of "arresters" for the removal of contaminants. (b) Replacement : That is, replacing a technological process causing air pollution, by a new process that does not. Increased use of electricity, solar power generation, natural gas, and central heating in place of coal have greatly helped in smoke reduction. There is a move now to reduce lead in petrol which is a cumulative poison. In India also deleaded petrol is being used. (c) Dilution : Dilution is valid so long as it is within the self- cleaning capacity of the environment. For example, some air pollutants are readily removed by vegetation. The establishment of "green belts" between industrial and residential areas is an attempt at dilution. The capacity for dilution is, however, limited and trouble occurs when the atmosphere is overburdened with pollutants. (d) Legislation: Air pollution is controlled in many countries by suitable legislation, e.g., Clean Air Acts. Legislation covers such matters as height of chimneys, powers to local authorities to carry out investigations, research and education concerning air pollution, creation of smokeless zones and enforcement of standard for ambient air quality. To prevent or reduce the usage of double engine. To decrease the nuisance of air pollution, the Government of India have enacted "The Air (Prevention and Control of Pollution) Act" in 1981. (e) International action : To deal with air pollution on a world-wide scale, the WHO has established an international network of laboratories for the monitoring and study of air pollution. The network consists of two international centres at London and Washington, three centres at Moscow, Nagpur and Tokyo and 20 laboratories in various pas of the world. These centres will issue warnings of air pollution where and when necessary. Ref: Park 25th edition Pgno : 774
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Social & Preventive Medicine
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