产电型人工湿地脱氮性能研究进展

Research Progress on Nitrogen Removal Performance of Electricity-Producing Constructed Wetland: A Review

产电型人工湿地(CW-MFC)是将微生物燃料电池(MFC)与人工湿地(CW)耦合的一种新兴强化污水处理技术。随着研究的深入,焦点逐渐从CW-MFC产电、有机物的去除等到了强化脱氮上面。文章综述了典型CW-MFC的结构参数和工艺特点,列举了一些耦合系统的产电情况和脱氮性能。对电极的材料、大小、间距、设置方式和系统的植物、基质、碱度、盐度以及耦合系统进水浓度、水力负荷、运行方式等影响CW-MFC脱氮效果的各种因素进行了全面而深入的分析,并由此提出了有待解决的问题,展望了未来的研究方向。

The electricity-producing constructed wetland is a new type of enhanced sewage treatment cou-pling system, which is formed by integrating the microbial fuel cell (MFC) into the constructed wetland (CW). The focus of studies on CW-MFC is gradually transferred from the electricity pro-duction and the removal of organic matter to the enhanced nitrogen removal. In this paper, the structural parameters and technological characteristics of the typical coupling system were re-viewed, and the performances of its electricity production and nitrogen removal of CW-MFC were listed. The factors on nitrogen removal in CW-MFC were analyzed. Those were material, size, spacing and installment method of the electrode, the plant, substrate, alkalinity, and salinity of the system, as well as the inlet nitrogen concentration, hydraulic loading and operation pattern of CW-MFC. Accordingly, the problems were presented and the further studies were prospected.