摘要
以高浓度石油污染土壤为研究对象,利用自行研发的清洗剂进行清洗工艺研究,对清洗后的土壤采用生物技术进行修复。结果表明:最佳清洗条件为清洗剂质量分数2%、清洗温度50℃、清洗时间30 min、搅拌速率100r·min^(-1)时,清洗率达到70.9%。在菌剂添加量4%、调理剂添加量1%、有机肥添加量4%和翻堆频次为每月3次的条件下,20周含油率降低至0.96%,降解率达到了84.6%。生物修复后石油烃质量分数(C10~C40)降低至6 290 mg·kg^(-1)。
The cleaning process was studied using the self-developed cleaning agent for high concentration oil-contaminated soil, then the cleaned soil was studied by bioremediation technology. The results showed that the best cleaning conditions were as follows: the cleaning agent mass fraction 2%, the temperature 50 ℃, the stirring time 30 min, and the stirring rate 100 r·min^(-1). Under above conditions, the oil cleaning rate was 70.9%. For bioremediation process, the degradation rate reached 84.6% under the conditions of 4% of inoculants, 1% of conditioners, 4% of organic fertilizers and turning 3 times per month. The oil content of soil was reduced to 0.96% and the total petroleum hydrocarbon mass fraction(C10~C40) was reduced to 6 290 mg·kg^(-1).
作者
杨庭
郭兵
杨勇
钟婷婷
谢江浩
田相友
马蒸钊
YANG Ting;GUO Bing;YANG Yong;ZHONG Ting-ting;XIE Jiang-hao;TIAN Xiang-you;MA Zheng-zhao(China Offshore Environmental Service Ltd.,Tianjin 300457,China;School of Chemical Engineering,Tianjin University,Tianjin 300072,China;CNOOC Safety Technology Service Ltd.,Tianjin 300450,China)
出处
《当代化工》
CAS
2021年第9期2104-2108,共5页
Contemporary Chemical Industry
基金
国家重点研发计划,高浓度石油污染土壤修复技术体系构建与技术示范验证(项目编号:2018YFC1801905)。
关键词
石油污染土壤
清洗
生物修复
含油率
总石油烃
降解率
Oil-contaminated soil
Cleaning
Bioremediation
Oil content
Total petroleum hydrocarbon
Degradation rate