Question

Define input methods and output methods of pollution control, and give examples. Which approach is more effective and why?

Answer 1

solution is posted below.

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input method of pollution control: it is the method of pollution control which depends on preventing pollutant from forming or entering into environment so that it can not pollute the environment or it can also be done by reducing the amount of particular pollutant to enter the environment. this consist of device strategy and measures taken, these all consist input method of pollution control. overall we can say reducing the pollutant before entering the environment at its source.

examples: setting standards of pollution emission from vehicles and enforcing laws on all the manufactures.

output method of pollution control: it is performed after pollutant has been produced and entered in environment. this consist of reducing the pollution level after with the help of devices or processes to reduce the pollutant after entering the environment from the source.

example: use of electronic precipitator on chimneys, air cleaner used in homes.

better approach to control pollution is input control method as we are not letting pollutant to enter the environment by reducing it at its source level, this can be done by changing our manufacturing process so that using techniques producing less pollution or by making standard for vehicles and other equipment such that the concentration of pollution doesnt reach the harmful level, and expenditure of money while implementing input method of pollution control as it will have to implemented at source only whereas in case of output control method pollution is to be reduced by using devices and other things at various place which will require a lot of money and it will not be possible to control it everywhere. hence input control method is better.