有机污染土壤异位热脱附修复的碳足迹分析——以广州市某溶剂厂污染场地为例  

Carbon Footprint Analysis of Ex-situ Thermal Desorption Remediation of Organic Contaminated Soil-Taking the Polluted Site of a Solvent Factory in Guangzhou City as an Example

作　　者：许维通 王昆 宋广翰 卢俊 钟方海 贺志超 梁国栋 闫斌 王燕飞 XU Weitong;WANG Kun;SONG Guanghan;LU Jun;ZHONG Fanghai;HE Zhichao;LIANG Guodong;YAN Bin;WANG Yanfei(GIIHG Environmental Protection Technology Co.,Ltd.,Guangzhou 510150,China;College of Civil Engineering,Tongji University,Shanghai 200092,China;Center International Group Co.,Ltd.,Beijing 100176,China)

机构地区：[1]广州工控环保科技有限公司,广州510150 [2]同济大学土木工程学院,上海200092 [3]森特士兴集团股份有限公司,北京100176

出　　处：《中国资源综合利用》2024年第11期208-212,共5页China Resources Comprehensive Utilization

摘　　要：有机污染土壤一般含有大量有机污染物,存在较大的环境风险。以广州市某溶剂厂污染场地为例,基于全生命周期评价,分析有机污染土壤异位热脱附修复的碳足迹,对从开挖到回填的整个过程进行碳排放核算。核算结果显示,碳排放的主要来源为热脱附修复过程,占总碳排放量的99.08%;直接热脱附工艺修复单位吨土的碳排放量是间接热脱附的2倍左右,其中直接热脱附修复过程碳排放量为127.08 kg CO_(2)e/t土,间接热脱附修复过程碳排放量为62.31 kg CO_(2)e/t土。经对比,异位热脱附修复技术可用于处理有机污染土壤,污染物去除率高,修复周期短,适用性强,对环境更加友好。Organic polluted soil generally contains a large amount of organic pollutants and poses significant environmental risks.Taking a contaminated site of a solvent factory in Guangzhou city as an example,based on a full life cycle assessment,the carbon footprint of organic contaminated soil remediation through thermal desorption is analyzed,and the carbon emissions from excavation to backfilling are calculated.The accounting results show that the main source of carbon emissions is the thermal desorption and remediation process,accounting for 99.08%of the total carbon emissions;the carbon emissions per ton of soil restored by direct thermal desorption process are about twice that of indirect thermal desorption,the carbon emissions during direct thermal desorption remediation process are 127.08 kg CO_(2)e/t soil,and 62.31 kg CO_(2)e/t soil during indirect thermal desorption remediation process.After comparison,the ex-situ thermal desorption remediation technology can be used to treat organic polluted soil,with high pollutant removal rate,short remediation cycle,strong applicability,and more environmentally friendly.

关 键 词：有机污染土壤 修复 异位热脱附 碳排放核算 

分 类 号：X53[环境科学与工程—环境工程]