As one of the black and odorous water treatment bioremediation technologies, the biological filter has been widely used due to its high efficiency, low cost and no secondary pollution. It has achieved certain effects when repairing black and odorous water bodies in some areas of my country. In this paper, two sets of multi-media biological filters were designed and the carrier was modified to strengthen the performance of the carrier and effectively remove the chemical oxygen demand (COD), total nitrogen (TN), dissolved organic matter (DOM) and other pollutants in the black and odorous water. In this paper, the biological carriers on the market were modified The method studied the Biofilter 1 system based on the modified biological carrier and the Biofilter 2 system based on the unmodified carrier on the market under different hydraulic loading rate (HLR) conditions. Next, the removal effect of conventional pollutants (COD, TOC, TN, NH₄), and the influence on the composition and structural characteristics of DOM are analyzed, and the removal mechanism of pollutants is analyzed. By comparing the operating effects of BF1 and BF2, it is found that with the increase of HLR, the pollutant removal rate of the two systems both increased first and then decreased. The removal effect of BF1 was better than that of BF2, and the impact load resistance of the modified carrier in the BF1 system was stronger than that of the unmodified BF2 system.

作为黑色臭水处理生物修复技术之一，生物滤池由于其高效，低成本，无二次污染而得到了广泛的应用。在我国某些地区修复黑色和有臭味的水体时，已取得了一定的效果。本文设计了两套多媒体生物滤池，并对载体进行了改进，以增强载体的性能，并有效去除化学需氧量（COD），总氮（TN），溶解有机物（DOM）和黑色臭水中的其他污染物。在本文中，该方法研究了在不同水力负载率（HLR）条件下，基于改性生物载体的Biofilter 1系统和基于未改性载体的Biofilter 2系统。接下来，去除常规污染物（COD，TOC，TN，NH₄），分析了对DOM的组成和结构特征的影响，并分析了污染物的去除机理。通过比较BF1和BF2的运行效果，发现随着HLR的增加，两个系统的污染物去除率均先升高后降低。BF1的去除效果好于BF2，改性载体在BF1系统中的耐冲击载荷性比未改性BF2系统强。