Air Pollution

[pib] WAYU- Air Pollution Mitigation DevicePIBPrelims Only


Mains Paper 3: Environment | Conservation, environmental pollution and degradation, environmental impact assessment

From UPSC perspective, the following things are important:

Prelims level: WAYU

Mains level: Measures to curb Air Pollution in the national capital.



  • Recently a air pollution control device WAYU (Wind Augmentation Purifying Unit) for traffic junctions was inaugurated in Delhi today.

WAYU (Wind Augmentation Purifying Unit)

  1. WAYU is developed by Council of Scientific and Industrial Research – National Environmental Engineering Research Institute (CSIR-NEERI) as a part of Technology Development Project funded by Department of Science and Technology.
  2. The device that has been indigenously developed has the capacity to purify air in an area of 500 meter square.
  3. The device consumes only half a unit of electricity for 10 hours of running and has a maintenance cost of only Rs. 1500 per month.

 Working of the Device

  1. The device works on two principles mainly Wind generation for dilution of air pollutants and Active Pollutants removal.
  2. The device has filters for Particulate Matter removal and activated carbon (charcoal) and UV lamps for poisonous gases removal such as VOCs and Carbon Monoxide.
  3. The device has one fan and filter for sucking and removing Particulate Matter.
  4. There are two UV lamps and half kg of activated carbon charcoal coated with special chemical Titanium Dioxide.

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