甘肃省省级及以上工业园区污水处理厂运行问题及对策

Operational Problems and Countermeasures of Wastewater Treatment Plants in National and Provincial Industrial Parks in Gansu Province

  • 摘要: 为降低沿黄省区工业类污水处理厂高水平运管体系建设不完善引发的流域水环境风险,解决研究本身复杂性、大范围高频数据难获得性和数据获取地域壁垒性所引发的省域及以上报道鲜见的难题,基于调查问卷和实地勘探两种方式,对2022—2024年甘肃省工业园区污水处理厂运行数据进行了统计分析,探究其运行现状和存在问题。结果表明:①甘肃省工业园区污水处理厂存在建设设计、达标处理和运行成效等三类共性问题,污水处理依托率、运行负荷率和低达标污水处理厂占比分别达50%、47.4%和34.4%,运行成本达3.91元/m3。②形成了总体和流域两层面运行问题“一张图”,其中黄河流域甘肃段污水处理厂以建设设计、达标运行两类问题为主,存在污水处理依托率高、工艺升级改造率低、低达标率污水处理厂占比高等具体问题,西北诸河流域甘肃段以达标运行、运行成效两类问题为主,存在运行负荷率低、单位产泥量高、运行成本高等具体问题,长江流域甘肃段污水处理厂运行问题不突出。根据甘肃省各流域内工业园区污水处理厂运行的特殊问题,以减污降碳协同增效为目标,建议补齐建设弱项、提升运行负荷、优化运管模式,推动沿黄省区运管思路从末端管控向全过程优化转变。

     

    Abstract: To reduce the water environmental risks caused by inadequate construction and suboptimal management systems in industrial wastewater treatment plants (WWTPs) in the Yellow River Regions and to solve the problems of limited province-scale review studies due to the complexity of such studies, challenges in obtaining large-scale and high-density data, and regional data access barriers, the operation data of industrial WWTPs in Gansu Province from 2022 to 2024 is statistically analyzed to explore their operation status and existing problems based on questionnaire survey and field research. The results show that three types of common problems exist in Gansu′s industrial WWTPs: construction design issues, treatment effectiveness, and poor operation effectiveness. The proportion of wastewater treatment reliance, operation load, and proportion of low standard compliance are 50%, 47.4% and 34.4% respectively, and the operation cost is 3.91 RMB/m3. A ‘one-map’ of operation problems at the overall and basin levels is formed. Specifically, the WWTPs in the Yellow River Basin of Gansu Province have two types of major problems: construction design flaws and treatment inefficiencies, including a high proportion of wastewater treatment reliance, low rates of technological upgrades, and high rates of low standard compliance. In the WWTPs in the Northwest River Basin, the main problems involve treatment and operation effectiveness, including low operation loads, high sludge yields per unit, and high operation costs. Compared with the above two basins, the operation problems of WWYPs in the Yangtze River Basin of the Gansu Province are not obvious. Based on these specific operation problems and with the goal of reducing pollution and carbon emissions, it is recommended to improve infrastructure construction, increase operation load, optimize operation management models, and promote the transformation of operation management from end-of-pipe control to the full-process optimization in the Yellow River Region.

     

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