ABSTRACT

Oil interceptors are traditional SuDS devices used in highway runoff treatment to remove both floatable impurities (leaves, oil) and total suspended solids (TSS). This paper presents the results of an examination of the performance of an oil interceptor based on particle size distribution (PSD) and TSS during three rainfall events. The interceptor is situated on one of the busiest motorways in the UK (where peak traffic flow is 30,000 vehicles per hour). Although the overall data collected for this study provided evidence that the interceptor removed, in most cases, 70% of TSS, the data for particle size distribution (PSD) showed that the interceptor did not always cope with particle separation for particles of less than 25 μm diameter.

摘要

截油器是用于高速公路径流处理的传统 SuDS 设备，用于去除可漂浮杂质（树叶、油）和总悬浮固体 (TSS)。本文介绍了在三个降雨事件期间基于粒度分布 (PSD) 和 TSS 的油拦截器性能检查结果。拦截器位于英国最繁忙的高速公路之一（高峰交通流量为每小时 30,000 辆汽车）。虽然为这项研究收集的总体数据提供的证据表明，在大多数情况下，拦截器去除了 70% 的 TSS，但粒度分布 (PSD) 数据表明，拦截器并不总能应对小于 25 的颗粒分离微米直径。