Smog tower to help India’s capital breathe, but experts sceptical

A new attempt at purifying New Delhi’s notoriously polluted air will see 40 giant fans push out filtered air in the heart of the Indian capital’s posh downtown shopping district.

But the $2m “smog tower” has no shortage of doubters who say it will not help a city notorious for some of the world’s dirtiest air.The 25-metre (82 foot) high tower is meant to filter air over a 1km (0.6 miles) radius around the swanky shops and cafés in Connaught Place.

The neighbourhood’s British colonial-era buildings are hit by a grey-yellow smog every winter.

“Smog is an annual phenomenon because of particulate matter. So we are [trying] to contain this,” said Anwar Ali Khan, who is in charge of the project.

The engineer added the objective is to eliminate up to 50 percent of the deadly PM2.5 particles from the air.

The city has said more towers could be built if this experiment works.

Delhi’s Chief Minister Arvind Kejriwal once called the Indian capital a “gas chamber” because of its intense pollution.

Experts say that while smog towers may work, they are just a pinprick against the relentless foe of car and truck fumes, construction dirt, industrial emissions and the agricultural stubble burning that engulf the city of more than 20 million.

“Installing smog towers has never been, and will never be a solution,” Sunil Dahiya, an analyst with the Centre for Research on Energy and Clean Air, told the AFP news agency.

“If we really, really want to address pollution, it has to be addressed at the source.”

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