Air Emission Management

VOCs – Volatile Organic Compounds  揮發性有機化合物

It is a class of prevalent and complex organic pollutants, including paraffin, olefins and aromatics and other substances.

VOCs是空氣中普遍存在且組成復雜的一類有機污染物的統稱，主要包括烷烴、烯烴和芳香烴等物質

VOCs will turn into secondary organic aerosol particle by going through complicated photochemical reaction, and become an significant source of PM2.5.

通常情況下這些揮發性氣體直接排放到大氣中后會直接形成大氣污染源。此外，VOCs還可以經過復雜的光化學反應，生成顆粒物二次有機氣溶膠，成為PM2.5的重要來源之一。

Emissions to air are commonly generated from:

Core facility operations 生產過程

Non - Core facility operations 非生產過程