按效付费驱动下的雨污协同排查新模式

A New Model for Coordinated Stormwater and Sewage Investigation Driven by Performance-Based Payments

摘要:

自2021年国家“十四五”城镇污水处理提质增效政策实施以来，传统“重建设轻成效、雨污系统割裂治理”的工程模式已难以适应现代化生态环境治理的需求。结合某污水处理厂进水浓度低的排查项目，提出基于“按效付费机制”与“雨污系统协同排查”的项目实施新模式，将进水COD、氨氮浓度达标率、污水收集率提升幅度等核心指标与付费挂钩，建立“60%基础费用+40%绩效浮动”的动态付费机制。实证数据显示，案例片区在新模式推动整改下，2023年雨季污水厂日平均进水量同比减少4 517 m3/d，污水收集率同比提升了25.75%，进水COD、氨氮浓度同比提升显著。研究表明，这种“按效付费、雨污协同”的模式，推动污水处理排查工作从“粗放建设”向“精准提质”转型。

Abstract:

Since the implementation of the national "14th Five-Year Plan" policy to improve the quality and efficiency of urban sewage treatment in 2021, the traditional engineering model—characterized by an emphasis on construction over operational effectiveness and separate management of stormwater and sewage systems—has increasingly failed to meet the needs of modern ecological-environment governance. Combining an inspection project targeting low influent concentrations at a sewage treatment plant, this study proposes a new project-implementation model based on a performance-based payment mechanism and coordinated inspection of stormwater and sewage systems. The model links core indicators—such as the compliance rates of influent COD and ammonia-nitrogen concentrations and the improvement in sewage collection rate—to payment, and establishes a dynamic payment mechanism consisting of "60% base fee + 40% performance-linked variable fee".Empirical data show that, under the corrective measures driven by the new model, the case area’s sewage treatment plant experienced a year-on-year reduction in average daily influent of 4,517 m3/d during the 2023 rainy season, a 25.75% year-on-year increase in sewage collection rate, and significant year-on-year increases in influent COD and ammonia-nitrogen concentrations. The study indicates that this "performance-based payment + coordinated stormwater–sewage" model promotes the transformation of sewage treatment inspection work from expansive construction to targeted quality improvement.