title: Removal of PCDD/Fs and PCBs from flue gas using a pilot gas cleaning system.
abstract: A 100 Nm3/hr capacity pilot scale dual bag filter (DBF) system was tested on the flue gas from an actual hazardous waste incinerator (HWI), the removal efficiency of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) was also studied. The first filter collected most of the fly ash and associated chlorinated organic; then activated carbon (AC) was injected and used to collect phase chlorinated organic from the gas. Concentrations of PCDD/Fs and PCBs after the DBF system were 0.07 and 0.01 ng TEQ/Nm3, respectively, which were both far below the national emission standard. Comparing with the original single bag filter system, the PCDD/Fs concentration dropped a lot from 0.36 to 0.07 ng TEQ/Nm3. Increasing AC feeding rate enhanced their collection efficiency, yet reduced the AC utilization efficiency, and it still needs further study to select an appropriate feeding rate in the system. These results will be useful for industrial application and assist in controlling emissions of PCDD/Fs and other persistent organic pollutions from stationary sources in China.
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China. linxiaoqing@zju.edu.cn
authors: Xiaoqing
authors: X
authors: Lin
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Yuqi
authors: Y
authors: Jin
authors: Environment Protection Bureau of Zhoushan, Zhoushan 316021, China.
authors: Hailong
authors: H
authors: Wu
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Tong
authors: T
authors: Chen
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Xiaodong
authors: X
authors: Li
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Shengyong
authors: S
authors: Lu
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Xuguang
authors: X
authors: Jiang
authors: State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China.
authors: Jianhua
authors: J
authors: Yan
mesh_terms: D001572:Benzofurans / Q000302:isolation & purification*; D000072338:Dibenzofurans, Polychlorinated; D005740:Gases / Q000737:chemistry*; D017745:Incineration / Q000295:instrumentation; D011078:Polychlorinated Biphenyls / Q000302:isolation & purification*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000302:isolation & purification
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D005740:Gases; D000072317:Polychlorinated Dibenzodioxins; D011078:Polychlorinated Biphenyls