Sign In
Learn bits
Ecology & Environment
Pradeep Kumar

24/08/21 13:05 PM IST

Delhi’s new smog tower

In news

Delhi got a ‘smog tower’, a technological aid to help combat air pollution

Details of tower
  • The structure is 24 m high, about as much as an 8-storey building — an 18-metre concrete tower, topped by a 6-metre-high canopy. At its base are 40 fans, 10 on each side.
  • Each fan can discharge 25 cubic metres per second of air, adding up to 1,000 cubic metres per second for the tower as a whole.
  • Inside the tower in two layers are 5,000 filters.
  • The filters and fans have been imported from the United States.
How it works ?
  • The tower uses a ‘downdraft air cleaning system’ developed by the University of Minnesota.
  • IIT-Bombay has collaborated with the American university to replicate the technology, which has been implemented by the commercial arm of Tata Projects Limited.
  • Polluted air is sucked in at a height of 24 m, and filtered air is released at the bottom of the tower, at a height of about 10 m from the ground.
  • When the fans at the bottom of the tower operate, the negative pressure created sucks in air from the top.
  • The ‘macro’ layer in the filter traps particles of 10 microns and larger, while the ‘micro’ layer filters smaller particles of around 0.3 microns.
Source: Indian Express

More Related Current Affairs View All

10 Jan

Rural landowners in Delhi want repeal of Sections 33 and 81 of Delhi Land Reforms Act

'Both sections dealing with the use and sale of agricultural land have come under the spotlight ahead of the Delhi Assembly elections.' This can only be done by the Central gove

Read More

10 Jan

Pravasi Bharatiya Diwas

'Prime Minister Narendra Modi inaugurated the 18th edition of the Pravasi Bharatiya Diwas  in Bhubaneswar.' The event is held once every two years to “honour the cont

Read More

10 Jan

Deciphering the Indus script

'Recently, Tamil Nadu Chief Minister M.K. Stalin announced a $1-million prize for experts or organisations in the event of their success in deciphering the scripts of the Indus Val

Read More

India’s First Ai-Driven Magazine Generator

Generate Your Custom Current Affairs Magazine using our AI in just 3 steps