[Pollution Characteristics and Emission Coefficient of Volatile Organic Compounds from Shoe-making Industry in Zhejiang Province].

ABSTRACT

To explore the pollution characteristics and emission coefficient of volatile organic compounds (VOCs) released from the shoe-making industry in Zhejiang province, this paper used the survey data of 490 shoe enterprises obtained in 2015 to analyze the current VOCs treatment status of shoe-making industry, and further screened 178 key enterprises to study the emission coefficient of shoe-making industry. The results showed that more than 95% of shoe enterprises failed to effectively dispose VOCs, because most shoe enterprises did not have treatment facilities. Moreover, solvent-based materials such as adhesive and primer were still commonly used in approximately 90% of shoe-making industry. Meanwhile, the main pollutants of VOCs in shoe-making industry were 2-butanone, toluene, acetone, cyclohexanone, ethyl acetate, xylene, dichloromethane and cyclohexane. Furthermore, the VOCs emission coefficient of shoe-making industry in Zhejiang was 29.5 g-1, while it was affected by the production processes, and the cemented construction techniques was higher than the injection techniques, which VOCs emission coefficients were 35.9 g-1 and 23.8 g-1, respectively. Furthermore, the major polluting stage of shoe-making industry was sole attaching, in which VOCs emission coefficient could reach 20.8 g-1.