垃圾焚烧炉烟气中二恶英指示物研究

Investigation of PCDD/Fs Indicators in Flue Gas from Waste Incinerators

为研究在线监测二恶英(PCDD/Fs)的指示物,分别检测了生活垃圾焚烧炉(MSWI)和医疗垃圾焚烧炉(HWI)烟气中氯苯(CBz)、多环芳烃(PAHs)和二恶英(PCDD/Fs)的排放浓度.MSWI和HWI烟气中,PAHs>六氯苯(HCBz)>PCDD/Fs,在HWI烟气中发现,五氯苯(PCBz)、六氯苯(HCBz)和二恶英(PCDD/Fs)毒性当量(TEQ)的排放相关系数分别为0.92和0.95,五、六氯苯之间的排放相关系数为0.99;同时MSWI和HWI烟气中23478-PCDF和二恶英毒性当量的相关系数也达到了0.99.二恶英指示物的研究是实现二恶英在线测量的关键之一.

In order to investigate the indicator of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofu-rans（PCDD/Fs）,a number of flue gas samples from different incinerators were collected.The organic pollutants such as polycyclic aromatic hydrocarbons（PAHs）,hexachlorobenzene（HCBz）,pentachlorobenzene（PCBz）and PCDD/Fs were analyzed in the samples.It was found that PAHs HCBz PCDD/Fs in flue gas from waste incinera-tors.In the gas samples from hospital waste incinerator（HWI）,the correlation coefficients（R2）of HCBz and PCBz to TEQ were 0.92 and 0.95,respectively,and R2 between HCBz and PCBz was 0.99.The R2 between 23478-PCDF and TEQ was also 0.99 in all the samples.The research of indicator plays a key role in realizing the on-line measure-ment of PCDD/Fs.