摘要
胜利油田滨一污水站产生的含油污泥经俄罗斯菌剂修复后含油量仍较高,为进一步降低其含油量,采用了植物修复技术。在总面积为1 000 m2的含油污泥修复场地上,分别种植了高羊茅、苜蓿、大豆、玉米和高粱,进行了120 d的植物修复。检测了植物修复前后含油污泥的含油量、基本理化性质、生物毒性、微生物数量和代谢功能多样性。对比发现,植物修复后含油污泥的石油降解率最高可达34.09%,持水率提高,生物毒性下降,微生物数量增加及代谢功能多样性增强。实验说明,植物修复是处理含油污泥的有效方法之一。
Phytoremediation was performed on the oily sludge of Binyi wastewater treatment plant of Shengli oilfield to further reduce its oil content after bioremediation employing a Russian microbial reagent. Five plants （tall rescue, alfalfa, soybean, corn and broomcorn） were selected and planted in the oily sludge at the 1 000 m^2 remediation site. The oil content and composition, select physical and chemical properties, biotoxicity, number and diversity of microorganisms in the bioremediated sludge were characterized before, during and after the 120-day phytoremediation program. The phytomediation resulted in up to 34.09 % reduction in oil content of the treated sludge. Relative to the control （without the plants）, the water holding capacity and both number and diversity of microorganisms in the sludge increased significantly, while its biotoxicity was much reduced. The field study results have demonstrated that phytoremediation is an effective option for treating the oily sludge.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2008年第8期52-55,共4页
Environmental Pollution & Control
关键词
含油污泥
植物
修复
oil sludge
plant
remediation
