苏州河6支流截污工程的优化调整

苏州河6交流截污工程是苏州河环境综合整治一期工程中最重要的治水工程之一。在工程进一步设计与实施过程中，根据多次污染源调查的结果，提出了按水系截污、沿河截污与区域截污相结合、雨水泵站旱流污水截污的3项原则，对苏州河6交流截污工程进行了优化调整，使截污效果得到大幅度的提高。实际纳管污染源数量由原计划的820个增加到2977个，实际截除污水量由原计划的6．8万m^3／d增加到26万m^3／d，6交流区域的截污率由22％提高到85％以上，6条主要交流的平均污水截除率接近70％，其他一些主要交流污水截除率也达到90％以上。

Optimization and Adjustment of Sewage Interception from the Six Tributaries of Suzhou Creek

Sewage interception from the six tributaries of Suzhou Creek is one of the most important sub-projects focusing on river rehabilitation of the Suzhou Creek Rehabilitation Project stage I. During design and implementation of the project, a guideline was followed to optimize and adjust the project, that is, to intercept sewage by river system, along the tributaries and also in the areas, and from the dry-weather wastewater of storm pump stations, so that the effect of sewage interception was increased to a great extent.