...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >In Situ Bioremediation of Naphthenic Acids Contaminated Tailing Pond Waters in the Athabasca Oil Sands Region—Demonstrated Field Studies and Plausible Options: A Review
【24h】

In Situ Bioremediation of Naphthenic Acids Contaminated Tailing Pond Waters in the Athabasca Oil Sands Region—Demonstrated Field Studies and Plausible Options: A Review

机译：阿萨巴斯卡油砂地区的环烷酸污染尾矿池水体的原位生物修复—现场研究和可行的选择：综述

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Currently, there are three industrial plants that recover oil from the lower Athabasca oil sands area, and there are plans in the future for several additional mines. The extraction procedures produce large volumes of slurry wastes contaminated with naphthenic acids (NAs). Because of a "zero discharge" policy the oil sands companies do not release any extraction wastes from their leases. The process-affected waters and fluid tailings contaminated with NAs are contained on-site primarily in large settling ponds. These fluid wastes from the tailing ponds can be acutely and chronically toxic to aquatic organisms, and NAs have been associated with this toxicity. The huge tailings containment area must ultimately be reclaimed, and this is of major concern to the oil sands industry. Some reclamation options have been investigated by both pioneering industries (Syncrude Energy Inc. and Suncor Inc.) with mixed results. The bioremediation techniques have limited success to date in biodegrading NAs to levels below 19 mg/L. Some tailing pond waters have been stored for more than 10 years, and it appears that the remaining high molecular weight NAs are refractory to the natural biodegradation process in the ponds. Some plausible options to further degrade the NAs in the tailings pond water include: bioaugmentation with bacteria selected to degrade the more refractory classes of NAs; the use of attachment materials such as clays to concentrate both the NA and the NA-degrading bacteria in their surfaces and/or pores; syner-gistic association between algae and bacteria consortia to promote efficient aerobic degradation; and biostimulation with nutrients to promote the growth and activity of the microorganisms.
机译：目前，有3家工厂从阿萨巴斯卡（Athabasca）较低的油砂地区开采石油，并且未来还将计划增建几座矿山。提取程序会产生大量被环烷酸（NAs）污染的浆料废物。由于实行“零排放”政策，油砂公司不会从租赁中释放任何提取废物。受过程影响的水和被NAs污染的尾矿主要被现场容纳在大型沉降池中。这些来自尾矿池的废液对水生生物具有急性和慢性毒性，而NA则与这种毒性有关。最终必须回收巨大的尾矿围堵区域，这是油砂行业的主要关注点。两个开创性行业（Syncrude Energy Inc.和Suncor Inc.）都对一些填海方案进行了研究，结果好坏参半。迄今为止，生物修复技术在将NAs降解至19 mg / L以下的水平方面取得的成功有限。一些尾矿池水已经储存了超过10年，看来剩余的高分子量NAs对池塘中的自然生物降解过程具有抵抗力。在尾矿池水中进一步降解NAs的一些可行选择包括：对细菌进行生物强化，以使难降解的NAs降解。使用黏合剂（如粘土）将NA和降解NA的细菌集中在其表面和/或孔中；藻类和细菌群落之间的协同关联，以促进有效的需氧降解；以及用营养物进行生物刺激以促进微生物的生长和活性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号