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Wind Augmentation Purifying Unit (WAYU):
- Wind Augmentation Purifying Unit (WAYU) was launched by Union Minister for Science & Technology and Earth Sciences and Environment, Forest and Climate in September 2018.
- WAYU is developed by Council of Scientific and Industrial Research – National Environmental Engineering Research Institute (CSIR-NEERI) as a part of Technology Development Project being funded by Department of Science and Technology.
- The device aims at tackling toxicity in air by sucking in particulate matter and release fresh air.
- WAYU is an active air pollution mitigation technology that works on the principle of breaking down carbon monoxide.
- The device works on two principles mainly Wind generation for dilution of air pollutants and Active Pollutants removal.
- 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.
- The device has one fan and filter for sucking and removing Particulate Matter.
- There are two UV lamps and half kg of activated carbon charcoal coated with special chemical Titanium Dioxide.
- 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.
- 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.
- The lead pollutant in the air is particulate matter (PM) 2.5 – are small pollutant particles that could enter the lungs and PM 10 – slightly larger, coarser particles, both were expected twice more than their safe limits.
- The Air Quality Index (AQI) is recorded by System of Air Quality and Weather Forecasting and Research (SAFAR), which is run by the Indian Institute of Tropical Meteorology with the support of India Meteorological Department.