中原油田石油污染土壤的微生物生态现场修复
Microbial Ecological Field Remediation of Oil Contaminated Soil in Zhongyuan Oil Field
李华耀 1陈立 2张发旺 3宋白雪 1李备1
作者信息
- 1. 河北地质大学,河北石家庄050000
- 2. 中国地质科学院水文地质环境地质研究所,河北石家庄050061
- 3. 中国地质科学院岩溶地质研究所,广西桂林541004
- 折叠
摘要
[目的]采用最优微生物菌群和植物(玉米)相结合的微生态技术,进行污染物的降解修复研究.[方法]供试植物为玉米,将研究场地分为添加固定化颗粒玉米区(球前玉米区)、添加游离态菌液玉米区(波前玉米区)、纯玉米区和空白对照区4个区,采集样品9次,研究不同地区土壤中降解菌总数、石油烃含量和石油降解率的变化.[结果]随着采样时间的推延,4个区的降解菌总数呈先增长后降低的趋势;添加固定化颗粒区和添加游离态菌液区的石油烃含量下降率较大,第20天纯玉米区的石油烃含量下降明显;添加固定化颗粒区和添加游离态菌液区的石油降解率较高,且降解稳定,纯玉米区对石油的降解率不稳定.[结论]游离态菌液与玉米相结合的微生态技术对土壤石油污染修复效果最好,降解速度快.
Abstract
[Objective] Using the micro ecological technology of combining the optimal microbial flora and plant (corn),to carry out the pollutants' degradation and repair work.[Method] The corn was selected as the site repair experiment plant,and the research site was divided into four zones:adding immobilized particles,adding free state of bacteria liquid,pure corn,blank control area,collecting samples for nine times,total number of degrading bacteria,petroleum hydrocarbon content and change of oil degradation rate in soils from various regions were studied.[Result] Total number of degrading bacteria presented the trend of first increasing then decreasing with sampling time delay;the decreasing rate of petroleum hydrocarbon content in zone by adding immobilized particles and free state of bacteria liquid was significant,while in zone of pure corn petroleum hydrocarbon content reduced obviously at the 20th day;the degradation rate of petroleum was high and stable in zone by adding immobilized particles and free state of bacteria liquid,the oil degradation rate of pure corn was not stable.[Conclusion] The micro ecological technology combined with the free state bacteria liquid and com has the best effect on the remediation of oil contaminated soil with fast degradation rate and remarkable effect.
关键词
石油/污染土壤/修复/菌群/降解率Key words
Petroleum/Contaminated soil/Remediation/Flora/Degradation rate引用本文复制引用
基金项目
科技部国际合作重点项目(2005DFA90200)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据