地下水1,2-二氯乙烷污染静态氧化修复实验  

EXPERIMENTAL INVESTIGATION ON STATIC OXIDATION REMEDIATION OF 1,2-DICHLOROETHANE IN CONTAMINATED GROUNDWATER

作　　者：孙东越 王明玉 王慧芳 王亚静 陈建平 王鹤鹏 顾琳凯 SUN Dong-yue;WANG Ming-yu;WANG Hui-fang;WANG Ya-jing;CHEN Jian-ping;WANG He-peng;GU Lin-kai(College of Mining,Liaoning Technical University,Fuxin 123000,China;University of Chinese Academy ofSciences College of Resources and Environment,Beijing 100049,China)

机构地区：[1]辽宁工程技术大学矿业学院,辽宁阜新123000 [2]中国科学院大学资源与环境学院,北京100049

出　　处：《环境工程》2019年第9期45-49,56,共6页Environmental Engineering

摘　　要：针对地下水1,2-二氯乙烷(1,2-DCA)污染的修复问题,通过在室内构建受1,2-DCA污染的不同介质条件下的水土固液柱体,应用4种典型的氧化剂进行室内静态氧化修复批实验,分析各氧化剂在不同污染物浓度和不同砂土粒径环境下对砂土固液相中1,2-DCA的修复效果,同时对原位氧化与自然衰减结合的修复方式进行可行性探讨。实验结果表明:所选的4种氧化剂均可有效去除1,2-DCA,但去除率略有不同。污染物浓度越高,反应越强烈;沙土粒径越小,对污染物吸附效果越强。另外,在氧化反应期间,水中菌落总数会急速下降,但随着时间推移和氧化剂的减少,菌落总数回升,菌落数量回升速率与氧化剂剂量有关。氧化剂剂量仍是原位化学氧化与监测自然衰减集成修复方法的关键指标。In view of the remediation problems of groundwater pollution caused by 1,2-dichloroethane, the static oxidation remediation experiment was carried out in laboratory to analyze the effect of different concentration of pollutants and the particle size of sand on degradation of 1,2-dichloroethane in solid and liquid phase.The effect of various oxidants on degradation of 1,2-dichloroethane was discussed, and the remediation method of in-situ oxidation combined with natural attenuation was discussed.This paper discussed the effect of oxidants based on 1,2-dichloroethane, and also investigated the remediation method of in-situ oxidation combined with natural attenuation.The experimental results showed that the selected oxidants can effectively remove 1,2-dichloroethane, and the removal efficiency was slightly different;the higher of pollutant concentration, the higher intense of the reaction was;the smaller of the sand particle size, the stronger of the pollutants adsorption effect was.At the same time, during the oxidation reaction, the total count of colony would decrease rapidly, but with the passage of time and the decrease of oxidant concentration, the colony count would rise again, and the natural attenuation could continue to be effective.Oxidan′t concentration was proved to be the key factor in the combination of in-situ chemical oxidation and monitoring of natural decay.

关 键 词：1 2-二氯乙烷 原位化学氧化修复 自然衰减 

分 类 号：X523[环境科学与工程—环境工程]