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首页> 美国卫生研究院文献>Frontiers in Plant Science >Ecopiling: a combined phytoremediation and passive biopiling system for remediating hydrocarbon impacted soils at field scale
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Ecopiling: a combined phytoremediation and passive biopiling system for remediating hydrocarbon impacted soils at field scale

机译：Ecopiling：组合的植物修复和被动生物堆放系统可在田间规模修复碳氢化合物影响的土壤

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Biopiling is an ex situ bioremediation technology that has been extensively used for remediating a wide range of petrochemical contaminants in soils. Biopiling involves the assembling of contaminated soils into piles and stimulating the biodegrading activity of microbial populations by creating near optimum growth conditions. Phytoremediation is another very successful bioremediation technique and involves the use of plants and their associated microbiomes to degrade, sequester or bio-accumulate pollutants from contaminated soil and water. The objective of this study was to investigate the effectiveness of a combined phytoremediation/biopiling system, termed Ecopiling, to remediate hydrocarbon impacted industrial soil. The large scale project was carried out on a sandy loam, petroleum impacted soil [1613 mg total petroleum hydrocarbons (TPHs) kg-1 soil]. The contaminated soil was amended with chemical fertilizers, inoculated with TPH degrading bacterial consortia and then used to construct passive biopiles. Finally, a phyto-cap of perennial rye grass (Lolium perenne) and white clover (Trifolium repens) was sown on the soil surface to complete the Ecopile. Monitoring of important physico-chemical parameters was carried out at regular intervals throughout the trial. Two years after construction the TPH levels in the petroleum impacted Ecopiles were below detectable limits in all but one subsample (152 mg TPH kg-1 soil). The Ecopile system is a multi-factorial bioremediation process involving bio-stimulation, bio-augmentation and phytoremediation. One of the key advantages to this system is the reduced costs of the remediation process, as once constructed, there is little additional cost in terms of labor and maintenance (although the longer process time may incur additional monitoring costs). The other major advantage is that many ecological functions are rapidly restored to the site and the process is esthetically pleasing.
机译：Biopiling是一种异地生物修复技术，已广泛用于修复土壤中的各种石油化学污染物。生物堆积涉及将受污染的土壤组装成堆，并通过创造接近最佳的生长条件来刺激微生物种群的生物降解活性。植物修复是另一种非常成功的生物修复技术，涉及使用植物及其相关微生物群落来降解，隔离或生物积累受污染土壤和水中的污染物。这项研究的目的是研究一种称为“生态堆肥”的植物修复/生物堆肥联合系统对烃类污染的工业土壤进行补救的有效性。该大型项目是在受石油影响的沙壤土上进行的[土壤总石油烃（TPHs）为1613 mg kg -1 ）。用化学肥料对被污染的土壤进行改良，用TPH降解细菌菌群接种，然后用于构建被动生物堆。最后，在土壤表面播种多年生黑麦草（黑麦草）和白三叶草（白三叶）的植物盖以完成生态堆。在整个试验过程中，定期对重要的理化参数进行监控。施工两年后，受石油影响的Ecopiles中的TPH水平低于一个子样品（152 mg TPH kg -1 土壤）中所有样品的可检测极限。 Ecopile系统是一个多因素的生物修复过程，涉及生物刺激，生物增强和植物修复。该系统的主要优点之一是减少了补救过程的成本，因为一旦建造，就不会增加人工和维护方面的额外成本（尽管更长的处理时间可能会导致额外的监控成本）。另一个主要优点是许多生态功能迅速恢复到该地点，并且该过程在美学上令人愉悦。

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