India’s capital, New Delhi, yesterday opened its first “smog tower” aimed at reducing the air pollution blamed for thousands of premature deaths every year, but experts were sceptical.
Concentrations of tiny deadly particles in Delhi’s air regularly exceed safe limits by up to 20 times, particularly in winter when its 20 million people are enveloped in a noxious gray blanket of smog.
Forty giant fans on the 25m-tower pump 1,000m3 cubic metres of air per second through filters that halve the amount of harmful particulates in a radius of 1km2, engineers said.
“Today is a big day for Delhi in its fight for clean air against pollution,” Indian Chief Minister Arvind Kejriwal said after the inauguration near the busy shopping area of Connaught Place.
The installation “is being looked at in an experimental way. We will analyse the data and if it’s effective, more towers will be built across Delhi,” Kejriwal added.
The tower cost US$2 million and critics say erecting a sufficient number to clean the air substantially across the city would cost huge amounts of public money, and that efforts would be better directed at the sources of the smog.
These include vehicle exhaust, heavy and small-scale industry, construction activity, the combustion of waste and fuel, and in winter the burning of crops in neighbouring regions.
“Let’s just be clear that this is futile, an absolute waste,” said Karthik Ganesan from the Council on Energy, Environment and Water.
“Now that taxpayers’ money has been spent, let Delhi be the test case for all other Indian cities... to ensure no other city spends on such ideas which we can’t afford,” he added.
India has 14 of the world’s 15 most polluted cities, the WHO said.
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