Student invents spraying system to help control smog  

大学生发明治霾神器 工地可24小时下毛毛雨

近几年，每年雾霾频发，在大武汉已成常态。去年，武汉市公布的雾霾来源构成中，排名前三的分别是汽车尾气、工业生产和扬尘。一名80后武汉小伙，从工地扬尘中发现了商机，自主研发出降尘神器——高空喷淋系统。[查看全文]

(ECNS) -- A college graduate in Wuhan, Hubei province, has invented a smog dispersion device that uses water to reduce floating dust at construction sites, Cnhubei.com said on Thursday.

The young man named Li Heng came up with the idea when he was still a junior in college. It took him one year to develop the device, which has been given a national patent.

With sprayers installed on tower cranes, the device releases a mist of water above construction sites that can reduce dust and absorb dirt particles and impurities in the air.

To examine the efficiency of the device, a test was carried out by the School of Resource and Environmental Engineering at Wuhan University of Science and Technology and a local laboratory.

Results of the test show that spraying water mist from high above a construction site can reduce the density of particulate matter in air by 84 percent when there is a light breeze blowing.

The device has been applied to 15 construction sites in Wuhan.

Industrial emissions, automobile exhaust and floating dust are three major factors that contribute to smoggy weather in Wuhan. There are about 11,000 construction sites which are major sources of dust in the city.