黄河三角洲是重要的国家级湿地自然保护区、特色产业基地与国家级农业高新技术产业示范区以及全国重要的高效生态经济示范区。然而，区域内日益严重的石油污染问题，已成为当地经济与社会发展的严重障碍。因此，在维持湿地生态系统结构与功能特别是在成本不提高的前提下，需要尽快解决好区域内泄漏的原油和土壤中石油烃污染物的问题。在此背景下，本项目拟通过863课题构建的最佳生态修复模式在当地适用性驯化的基础上，以生物电化学系统（BES）为强化手段，考察电活性微生物激发对生态修复的强化及其远距离电子传输机制，明确微生物电场的微观作用并揭示土壤中共存电子受体对电活性微生物末端电子传出的强化及其机制，阐明矿物/纳米矿物介导、纳米修饰电极材料辅助的电活性微生物与石油烃降解菌的互营机制，实现单电极修复范围的拓展，进一步缩短修复时间，加大提升修复效率，从而为黄河三角洲地区石油污染问题的根治和相关技术瓶颈的突破提供理论支撑。

The Yellow River Delta is an important national natural protection zone for wetlands, a characteristic industrial base and state high-tech demonstration district of agriculture, and an important national demonstration area of high-efficiency ecological economics. However, increasingly petroleum pollution problems in the region have become a serious obstacle for the development of the local economic and society. Therefore, it is urgently necessary to high-efficiently solve the problem of oils leaked from the process of exploitation, storages, transportation and uses and petroleum hydrocarbons pollutants in soil of the region, on the premise of maintaining the structure and function of wetland ecosystems, particularly under the condition of decreasing treatment and remediation costs. In this context, the optimum ecological remediation models built from the 863 project that was carried out during 2013.1-2016.12 will be acclimated in this region. On the basis of evaluating their local applicability, we will examine the enhancement of ecological remediation by stimulation of electro-active microorganisms using bioelectrochemical systems (BES) and reveal their long-distance electron transport mechanisms, clarify the microscopic action of microbial electric fields and strengthening effects of co-existing electron acceptors in soil on emission and efflux of terminal electrons from electro-active microorganisms and reveal their mechanisms, and expound syntrophic and interactive mechanisms between mineral/nano-mineral mediated or nanometer modified electrode assisted electro-active microorganisms and petroleum hydrocarbons degrading bacteria, thus expanding the remediation range of single electrodes, further shortening the remediation time, and substantially increasing the remediation efficiency. This will provide theoretical support for the eradication of petroleum pollution problems in the Yellow River Delta and the breakthrough of related technical bottlenecks.