Beijing to have world's biggest air purifier to fight smog

Oct 30, 2016

BEIJING: China will deploy world's largest outdoor air purifier designed by a Dutch engineer in its smog- hit capital Beijing, as the thick heavily-polluted haze returned to haunt the city, driving people indoors.
The seven-meter-tall tower, brainchild of Dutch designer Daan Roosegaarde, is undergoing last-minute checks in Beijing's 751 D Park art area. The 'Smog Free Tower' will soon be opened to the public, and will be toured across the country,
The tower can capture about 75 per cent of PM 2.5 and PM 10 tiny particles in its vicinity and then release purified air to create a "bubble" of fresh air around it. The tower can clean 30,000 cubic meters of air per hour through its patented ozone-free ion technology. Beijing has been plagued with heavy smog since the beginning of October. The city's environmental authorities issued a "yellow alert" for air pollution last week . "Yellow alert" is the third-most serious level in a four tier colour-code warning system. Red is the most serious and orange the second-most serious while blue is the least serious pollution level. 

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