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摘要
Taking typical printing enterprises in Guangzhou as the research objects, this paper discussed the emission characteristics, environmental impact and human health risks of VOCs in this industry based on the comprehensive statistical analysis of the concentrations and components of each emission stages. The results showed that the VOCs concentration was 3.51~73.57mg/m3 in the pre-press workshop, 0.86~435.10mg/m3 in the printing workshop, 0.05~221.93mg/m3 in the post-press workshop, respectively. The concentration at outlet of the exhaust-gas treatment facility was 4.28 ~ 66.84mg/m3 with treatment efficiencies ranging between 3.01% and 54.90%. The main emitted VOCs species consisted of aromatic hydrocarbons, alcohol ethers and esters, and the average ozone formation potential was 111.09mg/m3. Since aromatic hydrocarbons poses greater environmental impacts and health risks, it was recommended that the targeted control of aromatic hydrocarbons should be strengthened. ? 2020, Editorial Board of China Environmental Science. All right reserved.
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