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模拟水泥窑工艺对污染土壤热解吸尾气中六氯苯的去除效果

马福俊 丛 鑫 张 倩 李发生 谷庆宝

马福俊, 丛 鑫, 张 倩, 李发生, 谷庆宝. 模拟水泥窑工艺对污染土壤热解吸尾气中六氯苯的去除效果[J]. 环境科学研究, 2015, 28(8): 1311-1316.
引用本文: 马福俊, 丛 鑫, 张 倩, 李发生, 谷庆宝. 模拟水泥窑工艺对污染土壤热解吸尾气中六氯苯的去除效果[J]. 环境科学研究, 2015, 28(8): 1311-1316.
MA Fujun, CONG Xin, ZHANG Qian, LI Fasheng, GU Qingbao. Removal of Hexachlorobenzene in Thermal Desorption Offgas by Simulated Cement Kiln[J]. Research of Environmental Sciences, 2015, 28(8): 1311-1316.
Citation: MA Fujun, CONG Xin, ZHANG Qian, LI Fasheng, GU Qingbao. Removal of Hexachlorobenzene in Thermal Desorption Offgas by Simulated Cement Kiln[J]. Research of Environmental Sciences, 2015, 28(8): 1311-1316.

模拟水泥窑工艺对污染土壤热解吸尾气中六氯苯的去除效果

基金项目: 国家高技术研究发展计划(863)项目(2013AA06A207)

Removal of Hexachlorobenzene in Thermal Desorption Offgas by Simulated Cement Kiln

  • 摘要: 为了降低HCB(六氯苯)污染土壤热解吸修复的成本,分析了水泥窑处理技术去除污染土壤热解吸尾气中HCB的可行性,主要考察了处理温度、停留时间、φ(O2)和ρ(HCB)初始值对HCB去除的影响. 结果表明:①随着处理温度的升高和停留时间的延长,HCB的去除率逐渐升高,其中,当处理温度≥800 ℃、停留时间≥2 s时,其去除率高于99.93%. ②当处理温度为900 ℃、停留时间为2 s、ρ(HCB)初始值分别为1.70、17.00和85.00 mg/m3时,水泥窑处理后尾气中ρ(HCB)分别为0.60、0.78和1.50 μg/m3,其与ρ(HCB)初始值并不成正比,说明ρ(HCB)初始值对HCB去除的影响较小;φ(O2)≥2%时对HCB去除的影响也较小. ③水泥窑处理后,HCB的脱氯降解产物中仅有五氯苯被检出,ρ(五氯苯)最大值为1.20 μg/m3;同时处理过程中伴有少量的二英产生,但ρ(二英)满足GB 30485—2013《水泥窑协同处置固体废物污染控制标准》要求. 结果显示,模拟水泥窑工艺可有效去除污染土壤热解吸尾气中的HCB.

     

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  • 刊出日期:  2015-08-25

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