To prevent deterioration of receiving water bodies, phosphorus and total suspended solid (TSS) removal from stormwater is commonly targeted, e.g., by bioretention. However, their removal may vary due to ambient conditions and design features. In this study, the effect of a submerged zone with embedded carbon source (SZC), temperature, and (road) salt on phosphorus removal was investigated using a two-level full factorial design. A sand-based filter material was used. Overall, phosphorus and TSS removal percentages were high. Higher temperature (4.6 vs. 17.1 °C) caused higher outflow concentrations, thus lowering removal rates. The presence of salt deteriorated total phosphorus removal, whereas dissolved phosphorus removal was not affected. The impact of the SZC was statistically significant but not regarded to be of practical significance for P removal. In contrast, TSS removal was enhanced by a SZC. The results demonstrated that a relatively simple filter material could provide excellent P removal, avoiding the need for additives suggested in other studies.

为了防止接收水体变质，通常以例如通过生物保留为目标，从雨水中去除磷和总悬浮固体（TSS）。但是，由于环境条件和设计特征的原因，它们的去除可能会有所不同。在这项研究中，使用两级全因子设计研究了具有嵌入式碳源（SZC），温度和（道路）盐的淹没区对磷去除的影响。使用基于沙子的过滤材料。总体而言，磷和TSS去除率很高。较高的温度（4.6对17.1°C）导致较高的流出浓度，因此降低了去除率。盐的存在使总磷去除率变差，而溶解磷的去除率不受影响。SZC的影响具有统计学意义，但对去除P并不具有实际意义。相反，SZC增强了TSS的去除。结果表明，相对简单的过滤材料可以提供优异的除磷效果，从而避免了其他研究中建议的添加剂需求。