本文以污水治理为实例,对污水含油阶段性超标影响因素进行系统的分析。对比分析各站在处理液性质、处理条件和工艺流程等方面的差异因素;论述了上游对下游的沿程节点影响,同时也反向论述了包括集中反冲洗、老化油回收、容器污染等下游对上游的反向影响。并且,制定水质风险管理流程图,对治理对策进行分析。 This paper takes sewage treatment as an example, and systematically analyzes influencing factors of excessive stage of oil-containing wastewater. The differences of processing properties, processing conditions and process flow of each station were compared and analyzed. The influence of the upper reaches on the downstream nodes was discussed. At the same time, the downstream factors including concentrated backwash, aged oil recovery and container contamination were also discussed The reverse impact on the upstream. In addition, we develop a water quality risk management flow chart and analyze governance measures.