The article describes the polution status of PM2.5 in China, introduces the main techniques of urban PM2.5 treatment, and puts forward a new technology of PM2.5 treatment. The technology is suitable for the treatment of PM2.5 in the speciifed areas, and the better treatment results could be achieved.%概述了我国PM2.5污染现状，简介了城市PM2.5治理的主要技术，提出了一种治理PM2.5的新工艺，该治理工艺适用于指定区域的PM2.5治理，并能取得较好的治理效果。
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