LONGZhi-hong,XUGang,ZHUZi-peng,et al.Analysis of Drinking Water Plant Critical Production Reduction Rate in Water Supply System and Its Application[J].China Water & Wastewater,2023,39(13):76-80.
供水系统水厂临界减产率的分析及应用初探
- Title:
- Analysis of Drinking Water Plant Critical Production Reduction Rate in Water Supply System and Its Application
- Keywords:
- water supply system; critical production reduction rate of drinking water plant; pressure driven model
- 摘要:
- 保障管网中不出现“失压断流”是供水系统的安全底线之一，据此提出了水厂“临界减产率”概念作为非正常工况下控制水厂减产量的决策依据之一。从社会心理学角度提出了管网中最小自由水压为0.5 m且节点范围不超过500 m作为是否出现“失压断流”的参考标准。采用压力驱动模型，以逐步减量方式测算 “临界减产率”，结果表明，某市大型水厂的临界减产率为40%~50%，当水厂的产水率为10%~30%时，最大减产运行时间为6.25~12.50 h。
- Abstract:
- To ensure that there is no “loss of pressure or flow” in the pipe network is one of the safe bottom lines of water supply system. Therefore, the concept of “critical production reduction rate” of drinking water plant was proposed as one of the decision-making bases to control the production reduction of drinking water plant under abnormal working conditions. From the perspective of social psychology, this paper proposed that the minimum free water pressure in the pipe network was 0.5 m and the node range was not more than 500 m as the reference standard for whether there was “loss of pressure or flow”. The pressure driven model was used to calculate the “critical production reduction rate” by stepwise reduction method. The critical production reduction rate of a large drinking water plant in a city was estimated to be between 40% and 50%. When the water production rate of the drinking water plant was between 10% and 30%, the maximum reduction operation time was between 6.25 h and 12.50 h.
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