摘要
某焦化场地主要污染物为多环芳烃和石油烃等有机污染物,通过燃气热脱附技术对该地块进行修复并研究修复过程中地块温度、尾气排放、污染物浓度等因素的变化,结果表明:修复后萘、苯并(a)芘等有机污染物的检出质量分数≤0.8 mg/kg,总石油烃检出质量分数≤96 mg/kg,修复效果良好;修复过程中温度稳定上升,具有阶段性上升的特征,排烟尾气各指标排放正常。研究土壤性质、加热时间等因素对热脱附效果影响,为后续热脱附工程提供实践经验。
The main pollutants of a coking site are organic pollutants such as polycyclic aromatic hydrocarbons and petroleum hydrocarbons.The land is repaired by gas thermal desorption technology to study the changes in the temperature of the land,exhaust emissions,pollutant concentration and other factors during the repair process.The results show that the detected concentration of organic pollutants such as naphthalene and benzo(a)pyrene after restoration is≤0.8 mg/kg,and the detected concentration of total petroleum hydrocarbons is≤96 mg/kg,the restoration effect is good;the temperature during the restoration process is phased The characteristics of rising,the exhaust emissions of various indicators are normal.And study the influence of soil properties,heating time and other factors on the thermal desorption effect,and provide practical experience for subsequent thermal desorption projects.
作者
胡正
沈青
HU Zheng;SHEN Qing(Beichen Shanghai Environmental Technology Co,Shanghai 200030,China;China Shipbcilding Engineering Co,Shanghai 200090,China)
出处
《环境科技》
2020年第6期30-34,共5页
Environmental Science and Technology
关键词
燃气热脱附
有机污染
土壤修复
Gas thermal desorption
Organic pollution
Soil remediation
