air pollution in urban areas for specific filtervorrichtung

摘要

filtervorrichtung for admission of air pollutants such as dust, nitrogen oxides, aromatic substances and other impurities in the air, the inner cities through transport by road, rail or underground channels in parkgebu00e4uden are characterizedby means of fans that contaminated air from densely populated urban drainage and kanalsysteme in specific, overhead filterkonstruktion blown and cleaned.