Air Purifiers Current Affairs - 2020
On December 16, 2019, the Supreme Court of India ordered the Centre and the Delhi Governments to hasten the pilot project of setting up smog towers at Connaught place.
Smog Towers are air purification structures that are designed to work as air purifiers. They are fitted with multiple air purifiers. These purifiers cleanses air as it passes through them. It is a successful project and China has fitted two smog towers in the city of Beijing and Xi’an. The tower is being developed in Delhi by Kurin systems called the “Kurin Cleaners”
About the towers
The purifiers will be 20-feet wide and 40-feet tall. They will have the capacity to clean 32 million cubic metres of air in a day. A single tower will cover 3-km radius and is said have impacts on 75,000 lives of Delhiites.
The Kurin cleaner will remove PM 10 and PM 2.5 upto 99.99%. It will run on solar energy. As many as 48 fans will be fitted to these towers to maintain air flow. The towers will also be attached with solar heating and cooling techniques.
Tags: air pollution • Air pollution control device • Air Purifiers • Beat Air Pollution • Delhi pollution
Union Minister for Science & Technology and Earth Sciences and Environment Dr. Harsh Vardhan inaugurated air pollution control device WAYU (Wind Augmentation PurifYing Unit) for traffic junctions at ITO intersection and Mukarba Chowk in New Delhi. The device aims at tackling toxicity in air by sucking in particulate matter and release fresh air
WAYU (Wind Augmentation PurifYing Unit)
It has been indigenously developed by Council of Scientific and Industrial Research – National Environmental Engineering Research Institute (CSIR-NEERI) as part of Technology Development Project being funded by Department of Science and Technology. Its prototype has capacity to purify air in area of 500 meter square. It consumes only half unit of electricity for 10 hours of running and has maintenance cost of only Rs. 1500 per month.
Working: The device works on two principles mainly wind generation for dilution of air pollutants and active pollutants removal. It has filters for particulate matter (PM) removal and activated carbon (charcoal) and UV lamps for poisonous gases removal such as Volatile organic compounds (VOCs) and Carbon Monoxide. It has one fan and filter for sucking and removing PM. It also has two UV lamps and half kg of activated carbon charcoal coated with special chemical Titanium Dioxide.
Bigger version: CSIR-NEERI is in the process of developing bigger version of WAYU which can purify air in area of 10,000 meter square. It will also make designs of future WAYU devices better in aesthetics and can be deployed in bus shelters etc.